用javascript写的小键盘
最近研究了一些在线支付网站的前端代码，在看易宝支付的商户接入网站时候发现他们使用的javascript小键盘很不错。在前端页面通过鼠标输入字符、密码可以防止黑客通过记录你点击键盘的按钮窃取你的重要信息，这里将易宝支付的小键盘组件和大家分享下。
首先还是页面的目录结果，如下图：
页面最终的效果如图所示：
vkboard.js的代码：
View Code
var _default_img_dir = 'js/'; var vbk_images=new Array(); function vbk_preloadimages(){ if (document.images){ for (i=0;i<vbk_preloadimages.arguments.length;i++){ vbk_images[i]=new Image() vbk_images[i].src=_default_img_dir+vbk_preloadimages.arguments[i] } } } vbk_preloadimages("key_normal.gif","key_cap.gif","key_enter.gif","key_space.gif","key_back.gif","key_t0.gif","key_t1.gif","key_t2.gif","key_tab.gif","key_shift_l.gif","key_shift_r.gif","keyboard.gif","key_normal_down.gif","key_cap_down.gif","key_enter_down.gif","key_space_down.gif","key_back_down.gif"); function VKeyboard(container_id, callback_ref, create_numpad, font_name, font_size, font_color, dead_color, bg_color, key_color, sel_item_color, border_color, inactive_border_color, inactive_key_color, lang_sel_brd_color, show_click, click_font_color, click_bg_color, click_border_color, do_embed) { return this._construct(container_id, callback_ref, create_numpad, font_name, font_size, font_color, dead_color, bg_color, key_color, sel_item_color, border_color, inactive_border_color, inactive_key_color, lang_sel_brd_color, show_click, click_font_color, click_bg_color, click_border_color, do_embed); } VKeyboard.prototype = { kbArray: [], _get_event_source: function(event) { var e = event || window.event; return e.srcElement || e.target; }, _setup_event: function(elem, eventType, handler) { return (elem.attachEvent ? elem.attachEvent("on" + eventType, handler) : ((elem.addEventListener) ? elem.addEventListener(eventType, handler, false) : null)); }, _detach_event: function(elem, eventType, handler) { return (elem.detachEvent ? elem.detachEvent("on" + eventType, handler) : ((elem.removeEventListener) ? elem.removeEventListener(eventType, handler, false) : null)); }, _start_flash: function(in_el) { if(in_el.style.backgroundImage.indexOf('_down')<0) in_el.style.backgroundImage=in_el.style.backgroundImage.replace('.gif','_down.gif'); return; function getColor(str, posOne, posTwo) { if(/rgb\((\d+),\s(\d+),\s(\d+)\)/.exec(str)) // try to detect Mozilla-style rgb value. { switch(posOne) { case 1: return parseInt(RegExp.$1, 10); case 2: return parseInt(RegExp.$2, 10); case 3: return parseInt(RegExp.$3, 10); default: return 0; } } else // standard (#xxxxxx or #xxx) way return str.length == 4 ? parseInt(str.substr(posOne, 1) + str.substr(posOne, 1), 16) : parseInt(str.substr(posTwo, 2), 16); } function getR(color_string) { return getColor(color_string, 1, 1); } function getG(color_string) { return getColor(color_string, 2, 3); } function getB(color_string) { return getColor(color_string, 3, 5); } var el = in_el.time ? in_el : (in_el.company && in_el.company.time ? in_el.company : null); if(el) { el.time = 0; clearInterval(el.timer); } var vkb = this; var ftc = vkb.fontcolor, bgc = vkb.keycolor, brc = vkb.bordercolor; // Special fixes for simple/dead/modifier keys: if(in_el.dead) ftc = vkb.deadcolor; if(((in_el.innerHTML == "Shift") && vkb.Shift) || ((in_el.innerHTML == "Caps") && vkb.Caps) || ((in_el.innerHTML == "AltGr") && vkb.AltGr)) bgc = vkb.lic; // Extract base color values: var fr = getR(ftc), fg = getG(ftc), fb = getB(ftc); var kr = getR(bgc), kg = getG(bgc), kb = getB(bgc); var br = getR(brc), bg = getG(brc), bb = getB(brc); // Extract flash color values: var f_r = getR(vkb.cfc), f_g = getG(vkb.cfc), f_b = getB(vkb.cfc); var k_r = getR(vkb.cbg), k_g = getG(vkb.cbg), k_b = getB(vkb.cbg); var b_r = getR(vkb.cbr), b_g = getG(vkb.cbr), b_b = getB(vkb.cbr); var _shift_colors = function() { function dec2hex(dec) { var hexChars = "0123456789ABCDEF"; var a = dec % 16; var b = (dec - a) / 16; return hexChars.charAt(b) + hexChars.charAt(a) + ""; } in_el.time = !in_el.time ? 10 : (in_el.time - 1); function calc_color(start, end) { return (end - (in_el.time / 10) * (end - start)); } var t_f_r = calc_color(f_r, fr), t_f_g = calc_color(f_g, fg), t_f_b = calc_color(f_b, fb); var t_k_r = calc_color(k_r, kr), t_k_g = calc_color(k_g, kg), t_k_b = calc_color(k_b, kb); var t_b_r = calc_color(b_r, br), t_b_g = calc_color(b_g, bg), t_b_b = calc_color(b_b, bb); function setStyles(style) { style.color = "#" + dec2hex(t_f_r) + dec2hex(t_f_g) + dec2hex(t_f_b); style.borderColor = "#" + dec2hex(t_b_r) + dec2hex(t_b_g) + dec2hex(t_b_b); style.backgroundColor = "#" + dec2hex(t_k_r) + dec2hex(t_k_g) + dec2hex(t_k_b); } var first = (in_el == vkb.mod[4]) ? false : true, is = in_el.style, cs = in_el.company ? in_el.company.style : null; if(cs && first) setStyles(cs); setStyles(is); if(cs) { if(!first) { setStyles(cs); is.borderBottomColor = "#" + dec2hex(t_k_r) + dec2hex(t_k_g) + dec2hex(t_k_b); } else cs.borderBottomColor = "#" + dec2hex(t_k_r) + dec2hex(t_k_g) + dec2hex(t_k_b); } if(!in_el.time) { clearInterval(in_el.timer); return; } }; _shift_colors(); in_el.timer = window.setInterval(_shift_colors, 50); }, _setup_style: function(obj, top, left, width, height, position, text_align, line_height, font_size, font_weight, padding_left, padding_right) { var os = obj.style; if(top) os.top = top; if(left) os.left = left; if(width) os.width = width; if(height) os.height = height; if(position) os.position = position; if(text_align) os.textAlign = text_align; if(line_height) os.lineHeight = line_height; if(font_size) os.fontSize = 12; os.fontWeight = font_weight || "lighter"; os.fontFamily = "Arial,Verdana, New"; if(padding_left) os.paddingLeft = padding_left; if(padding_right) os.paddingRight = padding_right; }, _setup_key: function(parent, id, top, left, width, height, text_align, line_height, font_size, font_weight, padding_left, padding_right, backImage) { var _id = this.Cntr.id + id; var exists = document.getElementById(_id); var key = exists ? exists.parentNode : document.createElement("DIV"); this._setup_style(key, top, left, width, height, "absolute"); // key.style.cursor="pointer"; var key_sub = exists || document.createElement("DIV"); key.appendChild(key_sub); parent.appendChild(key); this._setup_style(key_sub, "", "", "", line_height, "relative", text_align, line_height, font_size, font_weight, padding_left, padding_right); key_sub.id = _id; var bi = backImage?backImage:'url(key_normal.gif)'; bi = bi.replace('url(','url('+_default_img_dir); key_sub.style.backgroundImage=bi; key_sub.style.backgroundRepeat='no-repeat'; return key_sub; }, _findX: function(obj) { return (obj && obj.parentNode) ? parseFloat(obj.parentNode.offsetLeft) : 0; }, _findY: function(obj) { return (obj && obj.parentNode) ? parseFloat(obj.parentNode.offsetTop) : 0; }, _findW: function(obj) { return (obj && obj.parentNode) ? parseFloat(obj.parentNode.offsetWidth) -2: 0; }, _findH: function(obj) { return (obj && obj.parentNode) ? parseFloat(obj.parentNode.offsetHeight) : 0; }, _construct: function(container_id, callback_ref, create_numpad, font_name, font_size, font_color, dead_color, bg_color, key_color, sel_item_color, border_color, inactive_border_color, inactive_key_color, lang_sel_brd_color, show_click, click_font_color, click_bg_color, click_border_color, do_embed) { this.cont_id=container_id; var exists = (this.Cntr != undefined), ct = exists ? this.Cntr : document.getElementById(container_id); var changed = (font_size && (font_size != this.fontsize)); this._Callback = ((typeof(callback_ref) == "function") && ((callback_ref.length == 1) || (callback_ref.length == 2))) ? callback_ref : (this._Callback || null); var ff = font_name || this.fontname || ""; var fs = font_size || this.fontsize || "14px"; var fc = font_color || this.fontcolor || "#000"; var dc = dead_color || this.deadcolor || "#F00"; var bg = bg_color || this.bgcolor || "#FFF"; var kc = key_color || this.keycolor || "#FFF"; var bc = border_color || this.bordercolor || "#777"; this.lic = sel_item_color || this.lic || "#DDD"; this.ibc = inactive_border_color || this.ibc || "#CCC"; this.ikc = inactive_key_color || this.ikc || "#FFF"; this.lsc = lang_sel_brd_color || this.lsc || "#F77"; this.cfc = click_font_color || this.cfc || "#CC3300"; this.cbg = click_bg_color || this.cbg || "#FF9966"; this.cbr = click_border_color || this.cbr || "#CC3300"; this.sc = (show_click == undefined) ? ((this.sc == undefined) ? false : this.sc) : show_click; this.fontname = ff, this.fontsize = fs, this.fontcolor = fc; this.bgcolor = bg, this.keycolor = kc, this.deadcolor = dc, this.bordercolor = bc; if(!exists) { this.Cntr = ct; this.Caps = this.Shift = this.AltGr = false; this.DeadAction = []; this.DeadAction[0] = this.DeadAction[1] = null; this.keys = [], this.mod = [], this.pad = []; VKeyboard.prototype.kbArray[container_id] = this; } var kb = exists ? ct.childNodes[0] : document.createElement("DIV"); if(!exists) { ct.appendChild(kb); ct.style.display = "block"; ct.style.zIndex = 999; if(do_embed) ct.style.position = "relative"; else { ct.style.position = "absolute"; // Many thanks to Peter-Paul Koch (www.quirksmode.org) for the find-pos-X/find-pos-Y code. var initX = 0, ct_ = ct; if(ct_.offsetParent) { while(ct_.offsetParent) { initX += ct_.offsetLeft; ct_ = ct_.offsetParent; } } else if(ct_.x) initX += ct_.x; var initY = 0; ct_ = ct; if(ct_.offsetParent) { while(ct_.offsetParent) { initY += ct_.offsetTop; ct_ = ct_.offsetParent; } } else if(ct_.y) initY += ct_.y; ct.style.top = initY + "px", ct.style.left = initX +"px"; } kb.style.position = "relative"; kb.style.top = "0px", kb.style.left = "0px"; kb.style.backgroundImage = 'url('+_default_img_dir+'keyboard.gif)'; } kb.style.padding = "5px"; kb.style.border = "0px solid " + bc; var kb_main = exists ? kb.childNodes[0] : document.createElement("DIV"), ks = kb_main.style; if(!exists) { kb.appendChild(kb_main); ks.position = "relative"; ks.width = "1px"; ks.cursor = "default"; } // Disable content selection: this._setup_event(kb_main, "selectstart", function(event) { return false; }); this._setup_event(kb_main, "mousedown", function(event) { if(event.preventDefault) event.preventDefault(); return false; }); ks.fontFamily = ff, ks.backgroundColor = bg; if(!exists || changed) { var mag = parseFloat(fs) / 14.0, cell = Math.floor(25.0 * mag), dcell = 2 * cell; var cp = String(cell) + "px", lh = String(cell - 2.0) + "px"; var cp_t0 = "45px"; var prevX = 0, prevY = 1, prevW = 0, prevH = 0; // Convenience strings: var c = "center", n = "normal", r = "right", l = "left", e = " ", pad = String(4 * mag) + "px"; // Number row: var key; for(var i = 0; i < 13; i++) { this.keys[i] = key = this._setup_key(kb_main, "___key" + String(i), "1px", (prevX + prevW + 1) + "px", cp, cp, c, lh, fs); prevX = this._findX(key), prevW = this._findW(key); } prevY = this._findY(key); prevH = this._findH(key)-2; // universal key height var kb_kbp = this._setup_key(kb_main, "___kbp", "1px", (prevX + prevW + 1) + "px", (2.1 * cell) + "px", cp, r, lh, fs, n, "", pad, "url(key_back.gif)"); kb_kbp.innerHTML = ""; kb_kbp.subst="BackSpace"; this.mod[0] = kb_kbp; // Top row: var kb_tab = this._setup_key(kb_main, "___tab", (prevY + prevH + 1) + "px", "1px", (1.48 * cell - 1) + "px", cp, l, lh, fs, n, "", pad, "url(key_tab.gif)"); kb_tab.innerHTML = ""; kb_tab.subst = ""; this.mod[1] = kb_tab; prevX = this._findX(kb_tab), prevW = this._findW(kb_tab), prevY = this._findY(kb_tab); for(; i < 26; i++) { var bi = null; if(i==25){ this.keys[i] = key = this._setup_key(kb_main, "___key" + String(i), prevY + "px", (prevX + prevW + 1) + "px", cp_t0, cp, c, lh, fs, null, "", null, "url(key_t0.gif)"); }else{ this.keys[i] = key = this._setup_key(kb_main, "___key" + String(i), prevY + "px", (prevX + prevW + 1) + "px", cp, cp, c, lh, fs); } prevX = this._findX(key), prevW = this._findW(key); } this.kbpH = this._findX(kb_kbp) + this._findW(kb_kbp); // Home row: var kb_caps = this._setup_key(kb_main, "___caps", (prevY + prevH + 1) + "px", "1px", dcell-6 + "px", cp, l, lh, fs, n, "",pad,'url(key_cap.gif)'); kb_caps.innerHTML = ""; kb_caps.subst = "Caps"; this.mod[2] = kb_caps; prevX = this._findX(kb_caps), prevW = this._findW(kb_caps), prevY = this._findY(kb_caps); for(; i < 37; i++) { this.keys[i] = key = this._setup_key(kb_main, "___key" + String(i), prevY + "px", (prevX + prevW + 1) + "px", cp, cp, c, lh, fs); prevX = this._findX(key), prevW = this._findW(key); } prevY = this._findY(key); var s = prevX + prevW + 1; var kb_enter = this._setup_key(kb_main, "___enter_l", prevY + "px", s + "px", (this.kbpH - s+1) + "px", cp, r, lh, fs, n, "", pad,"url(key_enter.gif)"); kb_enter.innerHTML = ""; kb_enter.subst = "Enter"; this.mod[3] = kb_enter; s = this._findX(this.keys[25]) + this._findW(this.keys[25]) + 1; // var kb_enter_top = this._setup_key(kb_main, "___enter_top", this._findY(kb_tab) + "px", s + "px", (this.kbpH - s) + "px", cp, c, cp, fs); // kb_enter_top.innerHTML = e; // kb_enter_top.subst = "Enter"; // this.mod[4] = null; // kb_enter_top.company = kb_enter; // kb_enter.company = kb_enter_top; // Bottom row: var kb_shift = this._setup_key(kb_main, "___shift", (prevY + prevH + 1) + "px", "1px", (2.25 * cell) + "px", cp, l, lh, fs, n, "", pad,"url(key_shift_l.gif)"); kb_shift.innerHTML = ""; kb_shift.subst = "Shift"; this.mod[5] = kb_shift; prevX = this._findX(kb_shift), prevW = this._findW(kb_shift), prevY = this._findY(kb_shift); for(; i < 47; i++) { this.keys[i] = key = this._setup_key(kb_main, "___key" + String(i), prevY + "px", (prevX + prevW + 1) + "px", cp, cp, c, lh, fs); prevX = this._findX(key), prevW = this._findW(key); } prevY = this._findY(key); var kb_shift_r = this._setup_key(kb_main, "___shift_r", prevY + "px", (prevX + prevW + 1) + "px", (this._findX(kb_kbp) + this._findW(kb_kbp) - prevX - prevW) + "px", cp, r, lh, fs, n, "", pad,"url(key_shift_r.gif)"); kb_shift_r.innerHTML = ""; kb_shift_r.subst = "Shift"; this.mod[6] = kb_shift_r; // Language selector: var vcell = String(1.32 * cell) + "px"; var kb_lang = this._setup_key(kb_main, "___lang", (prevY + prevH + 1) + "px", "1px", (1.43 * cell)+"px", cp, l, lh, fs, n, "",pad,"url(key_t1.gif)"); kb_lang.subst = "Us"; this.mod[7] = kb_lang; prevY = this._findY(kb_lang); ks.height = (prevY + prevH + 1) + "px"; prevY += "px"; var kb_res_1 = this._setup_key(kb_main, "___res_1", prevY, (this._findX(kb_lang) + this._findW(kb_lang) + 1) + "px", cp, cp, c, lh, fs); kb_res_1.innerHTML = e; this.mod[8] = kb_res_1; var kb_res_2 = this._setup_key(kb_main, "___res_2", prevY, (this._findX(kb_res_1) + this._findW(kb_res_1) + 1) + "px", cp, cp, c, lh, fs); kb_res_2.innerHTML = e; this.mod[9] = kb_res_2; var kb_space = this._setup_key(kb_main, "___space", prevY, (this._findX(kb_res_2) + this._findW(kb_res_2) + 1) + "px", (6.65 * cell) + "px", cp, c, lh, fs, "", "","","url(key_space.gif)"); this.mod[10] = kb_space; var kb_alt_gr = this._setup_key(kb_main, "___alt_gr", prevY, (this._findX(kb_space) + this._findW(kb_space) + 1) + "px", cp, cp, c, lh, parseFloat(fs) * 0.786, n); kb_alt_gr.innerHTML = ""; this.mod[11] = kb_alt_gr; var kb_res_3 = this._setup_key(kb_main, "___res_3", prevY, (this._findX(kb_alt_gr) + this._findW(kb_alt_gr) + 1) + "px", cp, cp, c, lh, fs); kb_res_3.innerHTML = e; this.mod[12] = kb_res_3; var kb_res_4 = this._setup_key(kb_main, "___res_4", prevY, (this._findX(kb_res_3) + this._findW(kb_res_3) + 1) + "px", cp, cp, c, lh, fs); kb_res_4.innerHTML = e; this.mod[13] = kb_res_4; var kb_res_5 = this._setup_key(kb_main, "___res_5", prevY, (this._findX(kb_res_4) + this._findW(kb_res_4) + 1) + "px", (1.77 * cell)+"px", cp, c, lh, fs,"","","","url(key_t2.gif)"); kb_res_5.innerHTML = ""; var w = this.kbpH + 1; // Numpad: // if((create_numpad == undefined) ? true : create_numpad) // { // var w2 = this._create_numpad(container_id, kb_main); // if(w2 > w) w = w2; // } kb.style.width = ks.width = w + "px"; } this._refresh_layout(this.avail_langs[0][0]); return this; }, _set_key_state: function(key, on, textcolor, bordercolor, bgcolor) { if(key) { var ks = key.style; if(ks) { if(textcolor) ks.color = textcolor; if(bordercolor) ks.border = "0px solid " + bordercolor; if(bgcolor) ks.backgroundColor = bgcolor; } this._detach_event(key, 'mousedown', this._generic_callback_proc); this._detach_event(key, 'mouseup', this._generic_callback_proc_mouseup); this._detach_event(key, 'mouseout', this._generic_callback_proc_mouseout); this._detach_event(key, 'mouseover', this._generic_callback_proc_mouseover); if(on){ this._setup_event(key, 'mousedown', this._generic_callback_proc); this._setup_event(key, 'mouseup', this._generic_callback_proc_mouseup); this._setup_event(key, 'mouseout', this._generic_callback_proc_mouseout); this._setup_event(key, 'mouseover', this._generic_callback_proc_mouseover); } } }, _refresh_layout: function(layout) { if(!layout) layout = this.mod[7].subst; var fc = this.fontcolor, kc = this.keycolor, ikc = this.ikc; var ibc = this.ibc, bc = this.bordercolor, lic = this.lic; var arr_type = this.AltGr ? (this.Shift ? "alt_gr_shift" : "alt_gr") : (this.Shift ? "shift" : (this.Caps ? "caps" : "normal")); var nkeys = this.keys.length; var proto = VKeyboard.prototype; var norm_arr = proto[layout + "_normal"]; var caps_arr = proto[layout + "_caps"]; var shift_arr = proto[layout + "_shift"]; var alt_arr = proto[layout + "_alt_gr"]; var alt_shift_arr = proto[layout + "_alt_gr_shift"]; var dead_arr = proto[this.DeadAction[1]] || null; var bcaps = (caps_arr && (caps_arr.length == nkeys)); var bshift = (shift_arr && (shift_arr.length == nkeys)); var balt = (alt_arr && (alt_arr.length == nkeys)); var baltsh = (balt && alt_shift_arr && (alt_shift_arr.length == nkeys)); var caps = this.mod[2], shift = this.mod[5], shift_r = this.mod[6], alt_gr = this.mod[11]; if(bshift) { this._set_key_state(shift, true, fc, bc, this.Shift ? lic : kc); this._set_key_state(shift_r, true, fc, bc, this.Shift ? lic : kc); } else { this._set_key_state(shift, false, ibc, ibc, ikc); this._set_key_state(shift_r, false, ibc, ibc, ikc); if(arr_type == "shift") { arr_type = "normal"; this.Shift = false; } } if(balt) { this._set_key_state(alt_gr, true, fc, bc, this.AltGr ? lic : kc); if(this.AltGr) { if(baltsh) { this._set_key_state(shift, true, fc, bc); this._set_key_state(shift_r, true, fc, bc); } else { this._set_key_state(shift, false, ibc, ibc, ikc); this._set_key_state(shift_r, false, ibc, ibc, ikc); arr_type = "alt_gr"; this.Shift = false; } } } else { this._set_key_state(alt_gr, false, ibc, ibc, ikc); if(arr_type == "alt_gr") { arr_type = "normal"; this.AltGr = false; } else if(arr_type == "alt_gr_shift") { arr_type = "normal"; this.AltGr = false, this.Shift = false; shift.style.backgroundColor = kc, shift_r.style.backgroundColor = kc; } } if(this.Shift && !baltsh) this._set_key_state(alt_gr, false, ibc, ibc, ikc); if(bcaps && !this.AltGr) this._set_key_state(caps, true, fc, bc, this.Caps ? lic : kc); else { this._set_key_state(caps, false, ibc, ibc, ikc); this.Caps = false; if(arr_type == "caps") arr_type = "normal"; } var arr_cur = proto[layout + "_" + arr_type]; var i = nkeys; while(--i >= 0) { var key = this.keys[i], key_val = arr_cur[i]; if(!key_val) key_val = ""; if(this.Shift && this.Caps) { var key_nrm = norm_arr[i], key_cps = caps_arr[i], key_shf = shift_arr[i]; if((key_cps == key_shf) && (key_nrm != key_cps)) key_val = key_nrm; } if(typeof(key_val) == "object") { key.innerHTML = key_val[0], key.dead = key_val[1]; this._set_key_state(key, true, this.deadcolor, bc, (this.DeadAction[0] == key_val[0] ? lic : kc)); } else { key.dead = null; var block = false; if(key_val != "") { if(dead_arr) { for(var j = 0, l = dead_arr.length; j < l; j++) { var dk = dead_arr[j]; if(dk[0] == key_val) { key_val = dk[1]; break;}}; if(j == l) block = true; } key.innerHTML = key_val; if(block) this._set_key_state(key, false, ibc, ibc, ikc); else this._set_key_state(key, true, fc, bc, kc); } else { key.innerHTML = " "; this._set_key_state(key, false, ibc, ibc, ikc); } } } i = this.mod.length; while(--i >= 0) { var key = this.mod[i]; switch(i) { case 1: case 2: case 5: case 6: case 11: case 4: break; case 7: break; key.innerHTML = layout; this._detach_event(key, 'mousedown', this._handle_lang_menu); if(this.DeadAction[1]) this._set_key_state(key, false, ibc, ibc, ikc); else { var many = (this.avail_langs.length > 1); this._set_key_state(key, false, fc, many ? this.lsc : ibc, many ? kc : ikc); if(many) this._setup_event(key, 'mousedown', this._handle_lang_menu); } break; case 10: key.innerHTML = this.DeadAction[1] ? this.DeadAction[0] : " "; default: if((this.DeadAction[1] && (i != 10)) || ((i == 8) || (i == 9) || (i == 12) || (i ==13))) this._set_key_state(key, false, ibc, ibc, ikc); else this._set_key_state(key, true, fc, bc, kc); var ks = key.style; switch(i) { case 4: ks.borderBottomColor = kc; break; case 8: case 9: case 12: case 13: ks.borderColor = ibc; break; } } } i = this.pad.length; while(--i >= 0) { key = this.pad[i]; if(this.DeadAction[1]) this._set_key_state(key, false, ibc, ibc, ikc); else this._set_key_state(key, true, fc, bc, kc); } }, _handle_lang_menu: function(event) { var pr = VKeyboard.prototype; var in_el = pr._get_event_source(event); var container_id = in_el.id.substring(0, in_el.id.indexOf("___")); var vkboard = pr.kbArray[container_id]; var ct = vkboard.Cntr, menu = vkboard.menu; if(menu) { ct.removeChild(menu); vkboard.menu = null; } else { var fs = vkboard.fontsize, kc = vkboard.keycolor, bc = "1px solid " + vkboard.bordercolor; var mag = parseFloat(fs) / 14.0, cell = Math.floor(25.0 * mag), cp = cell + "px", lh = (cell - 2) + "px", w = String(102 * mag) + "px"; var h1 = Math.floor(cell + mag), h2 = String(100 * mag) + "px", pad = String(4 * mag) + "px"; var langs = pr.avail_langs.length; menu = document.createElement("DIV"); var ms = menu.style; ms.display = "block"; ms.position = "relative"; ms.top = "1px", ms.left = "0px"; ms.width = w; ms.border = bc; ms.backgroundColor = vkboard.bgcolor; vkboard.menu = ct.appendChild(menu); var menu_main = document.createElement("DIV"); ms = menu_main.style; ms.fontFamily = vkboard.fontname; ms.position = "relative"; ms.color = vkboard.fontcolor; ms.width = w; ms.height = String(langs * h1 + 1) + "px"; ms.cursor = "default"; menu.appendChild(menu_main); function setcolor(obj, c) { return function() { obj.style.backgroundColor = c; } }; for(var j = 0; j < langs; j++) { var item = vkboard._setup_key(menu_main, "___lang_" + String(j), String(h1 * j + 1) + "px", "1px", h2, cp, "left", lh, fs, "normal", pad); item.style.backgroundColor = kc; item.style.border = bc; item.innerHTML = pr.avail_langs[j][1]; vkboard._setup_event(item, 'mousedown', vkboard._handle_lang_item); vkboard._setup_event(item, 'mouseover', setcolor(item, vkboard.lic)); vkboard._setup_event(item, 'mouseout', setcolor(item, kc)); } } }, _handle_lang_item: function(event) { var pr = VKeyboard.prototype; var in_el = pr._get_event_source(event); var container_id = in_el.id.substring(0, in_el.id.indexOf("___")); var vkboard = pr.kbArray[container_id]; var ndx = in_el.id.indexOf("___lang_"); var lng = in_el.id.substring(ndx + 8, in_el.id.length); var newl = pr.avail_langs[lng][0]; if(vkboard.mod[7].innerHTML != newl) vkboard._refresh_layout(newl); vkboard.Cntr.removeChild(vkboard.menu); vkboard.menu = null; }, _generic_callback_proc_mouseup: function(event) { var pr = VKeyboard.prototype; var in_el = pr._get_event_source(event); if(in_el.style.backgroundImage.indexOf('_down')>0){ in_el.style.backgroundImage=in_el.style.backgroundImage.replace('_down.gif','.gif'); } }, _generic_callback_proc_mouseout: function(event) { var pr = VKeyboard.prototype; var in_el = pr._get_event_source(event); if(in_el.style.backgroundImage.indexOf('_down')>0){ in_el.style.backgroundImage=in_el.style.backgroundImage.replace('_down.gif','.gif'); } in_el.style.border="0px solid"; }, _generic_callback_proc_mouseover: function(event) { var pr = VKeyboard.prototype; var in_el = pr._get_event_source(event); in_el.style.border="1px solid #FCBE2C"; }, _generic_callback_proc: function(event) { var pr = VKeyboard.prototype; var in_el = pr._get_event_source(event); var container_id = in_el.id.substring(0, in_el.id.indexOf("___")); var vkboard = pr.kbArray[container_id]; var val = in_el.subst || in_el.innerHTML; if(!val) return; switch(val) { case "Caps": case "Shift": case "AltGr": vkboard[val] = !vkboard[val]; vkboard._refresh_layout(); if(vkboard.sc) vkboard._start_flash(in_el); return; case "none": val = ""; break; case "Tab": val = "\t"; break; case " ": val = " "; break; case """: val = "\""; break; case "<": val = "<"; break; case ">": val = ">"; break; case "&": val = "&"; break; } if(vkboard.sc) vkboard._start_flash(in_el); if(in_el.dead) { if(in_el.dead == vkboard.DeadAction[1]) { val = ""; vkboard.DeadAction[0] = vkboard.DeadAction[1] = null; } else { vkboard.DeadAction[0] = val; vkboard.DeadAction[1] = in_el.dead; } vkboard._refresh_layout(); return; } else { var r; if(vkboard.DeadAction[1]) { vkboard.DeadAction[0] = vkboard.DeadAction[1] = null; r = true; } if(vkboard.AltGr || vkboard.Shift || r) { vkboard.AltGr = false; vkboard.Shift = false; vkboard._refresh_layout(); } } if(vkboard._Callback) vkboard._Callback(val, vkboard.Cntr.id); }, SetParameters: function() { var l = arguments.length; if(!l || (l % 2 != 0)) return false; var p0, p1, p2, p3, p4, p5, p6, p7, p8, p9, p10, p11, p12, p13, p14, p15; while(--l > 0) { var value = arguments[l]; switch(arguments[l - 1]) { case "callback": p0 = ((typeof(value) == "function") && ((value.length == 1) || (value.length == 2))) ? value : this._Callback; break; case "font-name": p1 = value; break; case "font-size": p2 = value; break; case "font-color": p3 = value; break; case "dead-color": p4 = value; break; case "base-color": p5 = value; break; case "key-color": p6 = value; break; case "selection-color": p7 = value; break; case "border-color": p8 = value; break; case "inactive-border-color": p9 = value; break; case "inactive-key-color": p10 = value; break; case "lang-cell-color": p11 = value; break; case "show-click": p12 = value; break; case "click-font-color": p13 = value; break; case "click-key-color": p14 = value; break; case "click-border-color": p15 = value; break; default: break; } l -= 1; } this._construct(this.Cntr.id, p0, (this.pad.length != 0), p1, p2, p3, p4, p5, p6, p7, p8, p9, p10, p11, p12, p13, p14, p15); return true; }, showStatus : false, Show: function(value) { var ct = this.Cntr.style; this.showStatus = value; ct.display = ((value == undefined) || (value == true)) ? "block" : ((value == false) ? "none" : ct.display); }, // Layout info: avail_langs: [["Us", "English (US)"], ["Ca", "Canadian"], ["Ru", "Русский"], ["De", "Deutsch"], ["Fr", "Français"], ["Es", "Español"], ["It", "Italiano"], ["Cz", "Česky"], ["El", "Έλληνας"], ["He", "עברית"]], // Us International: Us_normal: ["", "1", "2", "3", "4", "5", "6", "7", "8", "9", "0", "_", "", "q", "w", "e", "r", "t", "y", "u", "i", "o", "p", "", "", "", "a", "s", "d", "f", "g", "h", "j", "k", "l", "", "", "z", "x", "c", "v", "b", "n", "m", "","",""], Us_caps: ["", "1", "2", "3", "4", "5", "6", "7", "8", "9", "0", "_", "", "Q", "W", "E", "R", "T", "Y", "U", "I", "O", "P", "", "", "", "A", "S", "D", "F", "G", "H", "J", "K", "L", "", "", "Z", "X", "C", "V", "B", "N", "M", "","",""], Us_shift: [["~", "Tilde"], "!", "@", "#", "$", "%", ["^", "Circumflex"], "&", "*", "(", ")", "_", "+", "Q", "W", "E", "R", "T", "Y", "U", "I", "O", "P", "{", "}", "|", "A", "S", "D", "F", "G", "H", "J", "K", "L", ":", """,, "Z", "X", "C", "V", "B", "N", "M", "<", ">", "?"], Us_alt_gr: [, "¡", "²", "³", "¤", "€", "¼", "½", "¾", "‘", "’", "¥", "×", "ä", "å", "é", "®", "þ", "ü", "ú", "í", "ó", "ö", "«", "»", "¬", "á", "ß", "đ",,,,,, "ø", "¶", ["´", "Acute"],, "æ",, "©",,, "ñ", "µ", "ç",, "¿"], Us_alt_gr_shift: [, "¹",,, "£",,,,,,,, "÷", "Ä", "Å", "É",, "Þ", "Ü", "Ú", "Í", "Ó", "Ö",,, "¦", "Á", "§", "Đ",,,,,, "Ø", "°", ["¨", "Umlaut"],, "Æ",, "¢",,, "Ñ",, "Ç",,""] }; var all_vbks = new Object(); function createKeyboard(srcId, targetId, bindId, checkkeyup){ var tgtEle = document.getElementById(targetId) var vbk = null; var keyb_callback = function(ch) { var text = document.getElementById(targetId), val = text.value; if(checkkeyup){ if(text.onkeyup){ text.onkeyup(); } } switch(ch) { case "BackSpace": var min = (val.charCodeAt(val.length - 1) == 10) ? 2 : 1; text.value = val.substr(0, val.length - min); break; case "Enter": this.Show(false); text.onblur(); //text.value += "\n"; break; default: text.value += ch; } // text.focus(); } var vkb = new VKeyboard(srcId, // container's id keyb_callback, // reference to the callback function true, // create the numpad or not? (this and the following params are optional) "", // font name ("" == system default) "15.7px", // font size in px "#000", // font color "#F00", // font color for the dead keys "#FFF", // keyboard base background color "#FFF", // keys' background color "#DDD", // background color of switched/selected item "#777", // border color "#CCC", // border/font color of "inactive" key (key with no value/disabled) "#FFF", // background color of "inactive" key (key with no value/disabled) "#F77", // border color of the language selector's cell true, // show key flash on click? (false by default) "#CC3300", // font color during flash "#FF9966", // key background color during flash "#CC3300", // key border color during flash false); // embed VKeyboard into the page? vkb.Show(false); if(bindId){ all_vbks[bindId]=vkb; var bindEle = document.getElementById(bindId); bindEle.onclick=function(){ for(v_key in all_vbks){ all_vbks[v_key].Show(false); } vkb.Show(!vkb.showStatus); } } return vkb; }
注意：
var_default_img_dir = 'js/';
这里设置你js文件存放的目录，这里我的图片放到js文件夹里，如果有的童鞋想放到其他目录下，那么修改如下的代码就行了：
vbk_preloadimages("key_normal.gif","key_cap.gif","key_enter.gif","key_space.gif","key_back.gif","key_t0.gif","key_t1.gif","key_t2.gif","key_tab.gif","key_shift_l.gif","key_shift_r.gif","keyboard.gif","key_normal_down.gif","key_cap_down.gif","key_enter_down.gif","key_space_down.gif","key_back_down.gif");
keyboard.js是个空文件，大伙不用关心哈。
keyboard.html的代码如下：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>javascript 制作的小键盘</title> </head> <script type="text/javascript" src="js/vkboard.js"></script> <body> <div id="kbdiv"></div> <form style=" margin-top:200px; margin-left:300px;"> <label for="kbtxt">键盘输入的文本框：</label><input id="kbtxt" name="kbtxt" type="text" size="24" readonly="readonly"/><img src="images/key_icon.gif" id="kbimg" name="kbimg" style="margin-left:6px;"/> </form> <script type="text/javascript"> createKeyboard("kbdiv","kbtxt","kbimg","true"); </script> </body> </html>
调用很简单，我这里就不多说了。
我已经将源码上传到我的博客里，下载地址如下：
https://files.cnblogs.com/sharpxiajun/keyboard.zip
我将js键盘代码嵌入到我的博客里，不过键盘背景图片显示不好，大家可以试试看~~~~~~
