工作中碰到的一些东西【弹出窗口】【拖放】【异步文件上传】

  久不出技术类文章,我都忘了自己是一程序员啦......今天写一点工作中遇到的东西,大家共同学习,反正也比较浅显了。

弹出窗口


  我们在工作中,经常会碰到弹出窗口类应用,有时候还需要一点遮盖层:

 

这类圆角弹出框其实用得还是很广泛的,用CSS3可以很容易的出现,但是考虑到浏览器兼容问题,这类还是需要用图片实现了

主要代码如下:

 //弹出层剧中
        function popup(popupName) {
            var _scrollHeight = $(document).scrollTop(); //获取当前窗口距离页面顶部高度
            _windowHeight = $(window).height(); //获取当前窗口高度
            _windowWidth = $(window).width(); //获取当前窗口宽度
            _popupHeight = popupName.height(); //获取弹出层高度
            _popupWeight = popupName.width(); //获取弹出层宽度
            //            _posiTop = (_windowHeight - _popupHeight) / 2 + _scrollHeight - 50;
            _posiTop = _scrollHeight + 120;
            _posiLeft = (_windowWidth - _popupWeight) / 2;
            popupName.css({ "left": _posiLeft + "px", "top": _posiTop + "px", "display": "block" }); //设置position
        }

        function dragFunc(dragDiv, dragBody) {
            if (dragDiv[0] && dragBody[0]) {
                var dragAble = false;
                var x1 = 0;
                var y1 = 0;
                var l = 0;
                var t = 0;
                var divOffset = dragBody.offset();
                dragDiv.mousedown(function (e) {
                    var ss = this;
                    //                    var rootId = 

                    dragDiv.css("cursor", "move");
                    dragAble = true;
                    // 当前鼠标距离div边框的距离
                    // 当前鼠标坐标,减去div相对左边的像素
                    l = parseInt(dragBody.css("left"));
                    t = parseInt(dragBody.css("top"));
                    x1 = e.clientX - l;
                    y1 = e.clientY - t;
                    x1 = x1 > 0 ? x1 : 0;
                    y1 = y1 > 0 ? y1 : 0;
                    this.setCapture && this.setCapture();
                });
                dragDiv.mousemove(function (e) {
                    if (!dragAble)
                        return;
                    // 当前div左边的坐标
                    // 当前鼠标坐标,减去鼠标拖动量
                    var x2 = 0;
                    var y2 = 0;
                    //需要考虑滚动条问题!!!
                    var top = $(document).scrollTop() ? $(document).scrollTop() - 15 : 0;
                    var left = $(document).scrollLeft() ? $(document).scrollLeft() - 15 : 0;
                    x2 = e.clientX - x1 + left;
                    y2 = e.clientY - y1 + top;
                    x2 = x2 > 0 ? x2 : 0;
                    y2 = y2 > 0 ? y2 : 0;
                    //要移动一定数量才移动
                    if (Math.abs(l - x2) > 10 || Math.abs(t - y2) > 10) {
                        dragBody.css("left", x2 + "px");
                        dragBody.css("top", y2 + "px");
                    }
                });
                dragDiv.mouseup(function (event) {
                    if (!dragAble)
                        return;
                    dragAble = false;
                    // dragDiv.css("position", "relative");
                    this.releaseCapture && this.releaseCapture();
                });
            }
        }

        var MyDialog = function (cfg) {
            this.config = {
                id: (new Date()).getTime().toString(),
                el: null,
                bodyId: null,
                cover: true,
                boxHtm: '<div class="dialog"  >  ' +
        '<table>   ' +
        '    <tr class="top">  ' +
        '       <td class="tl"> ' +
        '        </td> ' +
        '        <td class="c"> ' +
        '        </td> ' +
        '        <td class="tr"> ' +
        '        </td> ' +
        '    </tr> ' +
        '    <tr> ' +
        '        <td class="c"> ' +
        '          <div style="width:10px;"></div>' +
        '        </td> ' +
        '        <td class="main"> ' +
        '            <div class="title"> ' +
        '                <h3> ' +
        '                    <span class="title_text">请输入标题</span> <a class="cls" href="javascript:;"></a> ' +
        '                </h3> ' +
        '            </div> ' +
        '            <div class="content"> ' +
        '             请输入内容   ' +
        '            </div> ' +
        '        </td> ' +
        '        <td class="c"> ' +
        '        </td> ' +
        '    </tr> ' +
        '    <tr class="bottom"> ' +
        '        <td class="bl"> ' +
        '        </td> ' +
        '        <td class="c"> ' +
        '          <div style="width:10px;"></div>' +
        '        </td> ' +
        '        <td class="br"> ' +
        '        </td> ' +
        '    </tr> ' +
        '</table> ' +
    '</div>'
            };
            var scope = this;
            if (cfg) {
                $.each(cfg, function (key, value) {
                    scope.config[key] = value;
                });
            }
            this.box = null;
            this.cover = null;
            this.tmpBody = null;
        }


        MyDialog.prototype.show = function () {
            var scope = this;
            var cover = null;
            var box = null;
            if (this.config.cover) {
                if (this.config.id && $('#' + this.config.id + '_cover')[0]) {
                    cover = $('#' + this.config.id + '_cover');
                    cover.show();
                } else {
                    cover = $('<div style=" display:block; " id="' + this.config.id + '_cover" class="coverDiv" ></div>');
                    $('body').append(cover);
                }
                scope.cover = cover;
            }
            if (!$('#' + this.config.id)[0]) {
                box = $(this.config.boxHtm);
                $('body').append(box);
                box.attr('id', this.config.id);
                if (this.config.title) {
                    box.find('.title_text').html(this.config.title);
                }
                if (this.config.bodyId) {
                    var body = $('#' + this.config.bodyId);
                    var tmp = $('<div></div>').append(body);
                    var initBody = tmp.html();
                    scope.tmpBody = $(initBody);
                    tmp = null;
                    if (body[0]) {
                        var con = box.find('.main .content');
                        body.show();
                        con.html('');
                        con.append(body);
                    }
                }
                if (this.config.el && this.config.el[0]) {
                    var con = box.find('.main .content');
                    con.html(this.config.el);
                }
                //居中
                popup(box);
                //关闭dialog
                box.find('.title .cls').click(function (e) {
                    scope.close();
                    e.preventDefault();
                    return false;
                });

                dragFunc($('#' + this.config.id + ' .main .title'), $('#' + this.config.id));
                box.show();
                this.box = box;
            }
        }

        MyDialog.prototype.close = function () {
            //这里有问题
            var box = this.box;
            var tmpBody = this.tmpBody;
            var cover = this.cover;
            if (tmpBody && tmpBody[0]) {
                $('body').append(tmpBody);
            }
            if (box && box[0]) {
                box.remove();
            }
            if (cover && cover[0]) {
                cover.hide();
            }
        };

调用方法:

var dia = new MyDialog({
	    		title : title,
	    		bodyId : id,
	    		id : id + '_box'
		    });
	    	dia.show();

 具体可能还需要一定函数回调,各位可以自己封装一番。

拖放


 

工作中也经常会出现拖放效果的一些需求:

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>
    <title></title>
    <script src="http://www.cnblogs.com/scripts/jquery-1.7.1.js" type="text/javascript"></script>
    <script type="text/javascript">

        function dragFunc(dragDiv, dragBody, dropBody) {
            if (!dropBody[0]) {
                dropBody = $(document);
            }
            if (dragDiv[0] && dragBody[0]) {
                var dragAble = false;
                var x1 = 0;
                var y1 = 0;
                var l = 10;
                var t = 10;

                var init_position = '';
                var init_cursor = '';
                var tmp_body = null;

                dragDiv.mousedown(function (e) {
                    var ss = this;

                    init_position = dragBody.css("position");
                    init_cursor = dragBody.css("init_cursor");
                    dragBody.css("position", "absolute");
                    dragDiv.css("cursor", "move");

                    tmp_body = $('<div class="tmp_div"></div>');
                    tmp_body.css('width', dragBody.css('width'));
                    tmp_body.css('height', dragBody.css('height'));
                    tmp_body.insertAfter(dragBody);
                    $(document).bind("selectstart", function () { return false; });  


                    dragAble = true;
                    // 当前鼠标距离div边框的距离
                    // 当前鼠标坐标,减去div相对左边的像素
                    l = parseInt(dragBody.css("left")) ? parseInt(dragBody.css("left")) : 10;
                    t = parseInt(dragBody.css("top")) ? parseInt(dragBody.css("top")) : 10;

                    var offset = dragBody.offset();

                    l = parseInt(offset.left);
                    t = parseInt(offset.top);

                    x1 = e.clientX - l;
                    y1 = e.clientY - t;
                    x1 = x1 > 0 ? x1 : 0;
                    y1 = y1 > 0 ? y1 : 0;
                    this.setCapture && this.setCapture();
                });
                dragDiv.mousemove(function (e) {
                    if (!dragAble)
                        return;
                    // 当前div左边的坐标
                    // 当前鼠标坐标,减去鼠标拖动量
                    var x2 = 0;
                    var y2 = 0;
                    //需要考虑滚动条问题!!!
                    var top = $(document).scrollTop() ? $(document).scrollTop() - 15 : 0;
                    var left = $(document).scrollLeft() ? $(document).scrollLeft() - 15 : 0;
                    x2 = e.clientX - x1 + left;
                    y2 = e.clientY - y1 + top;
                    x2 = x2 > 0 ? x2 : 0;
                    y2 = y2 > 0 ? y2 : 0;
                    //要移动一定数量才移动
                    if (Math.abs(l - x2) > 10 || Math.abs(t - y2) > 10) {
                        dragBody.css("left", x2 + "px");
                        dragBody.css("top", y2 + "px");
                    }

                    //红 #993300
                    //灰 #DBEAF9
                    //移动结束后判断拖放
                    var w = parseInt(dragBody.css('width'));
                    var h = parseInt(dragBody.css('height'));
                    $.each(dropBody, function () {
                        var el = $(this);
                        el.css('background-color', 'Gray');
                        var offset = el.offset();

                        var _l = offset.left || 0;
                        var _t = offset.top || 0;
                        var _w = parseInt(el.css('width'));
                        var _h = parseInt(el.css('height'));

                        if (x2 > _l && x2 + w < _l + _w && y2 > _t && y2 + h < _t + _h) {
                            el.css('background-color', '#DBEAF9');
                            
                            el.append(tmp_body);

                        }

                        var s = '';

                    });

                });
                dragDiv.mouseup(function (event) {
                    if (!dragAble)
                        return;

                    $(document).unbind("selectstart");  

                    //还原position 与 cursor
                    dragBody.css("position", init_position);
                    dragBody.css("cursor", init_cursor);

                    //dragBody.css("left", '0');
                    //dragBody.css("top", '0');
                    if (tmp_body) {
                        dragBody.insertAfter(tmp_body);
                        var offset = tmp_body.offset();
                        l = parseInt(offset.left);
                        t = parseInt(offset.top);
                        dragBody.css("left", l);
                        dragBody.css("top", t);
                        tmp_body.remove();

                    }
                    dragAble = false;
                    // dragDiv.css("position", "relative");
                    this.releaseCapture && this.releaseCapture();
                });
            }
        }



        $(document).ready(function () {
            var d1 = $('#d1');
            var c = $('.c');

            dragFunc(d1, d1, c);


        });
    
    
    </script>
    <style type="text/css">
        div
        {
            width: 100px;
            height: 100px;
            border: 1px solid black;
          
        }
        .tmp_div 
        {
            border-style: dashed;
            
        }
        
        #c1
        {
            background-color:  Gray;
            width: 300px;
            height:300px;
            float:left;
            margin:20px;
        }
        
         #c2
        {
            background-color:  Gray;
            width: 300px;
            height:300px;
            float:left;
            margin:20px;
        }
        
        
       
        
    </style>
</head>
<body>
    <div id="c1" class="c">1
        <div id="d1">me
        </div>
    </div>
    <div id="c2" class="c">2
    </div>

  


</body>
</html>

 

异步文件上传


 

我们所谓的AJAX异步文件上传事实上用js技术好像暂时还不能实现,就我所谓的异步上传事实上还是表单提交,而将form的target指向一

隐藏的iframe,然后成功后回调即可,真是十分坑爹的做法。。。。。

若是要更好的体验,便需要借助flash或者XX框架了,但是我也没有研究过.

<form id="formImg" name="formImg" enctype="multipart/form-data" method="post" action="">
<input type="hidden" name="MAX_FILE_SIZE" value="800000" id="max_size"/>
<input type="hidden" name="callback" value="parent.add_img_input" id="callback"/>
<a class="upbtn"><input type="file" name="userfile" id="userfile" title="支持JPG、GIF、PNG格式,文件小于1M" 
name="pic" value="" onchange="javascript:up_img(17);">上传</a>
</form>
document.charset='utf-8';
		    	var form = $('#formImg');
				var frame = $('#frame_img');
		        if (!frame[0]) {
		            frame = $('<iframe id="frame_img" name="frame_img" style="display:none;" ></iframe>');
		        }
		    	form.append(frame);
		    	form.attr('target', 'frame_img');
		    	form.attr('action', url);
		    	form.submit();
		    	
		    	document.charset='gbk';

 但是回调会涉及一点跨域的问题,需要在同一大域名下才行。

 

现况


 

爱生活,爱工作,今年继续努力吧!

 

 

 

 

 

 

 

 

 

posted on 2013-01-05 16:01  叶小钗  阅读(3349)  评论(4编辑  收藏  举报