js实现url链接encode加密
function urlencode(clearString) { var output = ''; var x = 0; clearString = utf16to8(clearString.toString()); var regex = /(^[a-zA-Z0-9-_.]*)/; while (x < clearString.length) { var match = regex.exec(clearString.substr(x)); if (match != null && match.length > 1 && match[1] != '') { output += match[1]; x += match[1].length; } else { if (clearString[x] == ' ') { output += '+'; } else { var charCode = clearString.charCodeAt(x); var hexVal = charCode.toString(16); output += '%' + ( hexVal.length < 2 ? '0' : '' ) + hexVal.toUpperCase(); } x++; } } return output; } function utf16to8(str) { var out, i, len, c; out = ""; len = str.length; for(i = 0; i < len; i++) { c = str.charCodeAt(i); if ((c >= 0x0001) && (c <= 0x007F)) { out += str.charAt(i); } else if (c > 0x07FF) { out += String.fromCharCode(0xE0 | ((c >> 12) & 0x0F)); out += String.fromCharCode(0x80 | ((c >> 6) & 0x3F)); out += String.fromCharCode(0x80 | ((c >> 0) & 0x3F)); } else { out += String.fromCharCode(0xC0 | ((c >> 6) & 0x1F)); out += String.fromCharCode(0x80 | ((c >> 0) & 0x3F)); } } return out; }