JavaScript仿照鼠标拖动选择功能
日期：2014-05-16 浏览次数：20442 次
JavaScript模仿鼠标拖动选择功能
<html>
<head>鼠标点选功能</head>
<style>
body{padding-top:50px;padding-left:100px;padding-right:150px;}
.fileDiv{float:left;width:100px;height:100px;text-align:center;line-height:100px;font-size:12px;border:1px solid #cccccc;margin-right:10px;margin-bottom:10px;}
.seled{border:1px solid #ff0000;background-color:#D6DFF7;}
</style>
<script type="text/javascript">
Array.prototype.remove = function( item ){
for( var i = 0 ; i < this.length ; i++ ){
if( item == this[i] )
break;
}
if( i == this.length )
return;
for( var j = i ; j < this.length - 1 ; j++ ){
this[ j ] = this[ j + 1 ];
}
this.length--;
}
String.prototype.replaceAll = function (AFindText,ARepText){ raRegExp = new RegExp(AFindText,"g"); return this.replace(raRegExp,ARepText);}
function getAllChildren(e) {
return e.all ? e.all : e.getElementsByTagName('*');
}
document.getElementsBySelector = function(selector) {
if (!document.getElementsByTagName) {
return new Array();
}
var tokens = selector.split(' ');
var currentContext = new Array(document);
for (var i = 0; i < tokens.length; i++) {
token = tokens[i].replace(/^\s+/,'').replace(/\s+$/,'');;
if (token.indexOf('#') > -1) {
var bits = token.split('#');
var tagName = bits[0];
var id = bits[1];
var element = document.getElementById(id);
if (tagName && element.nodeName.toLowerCase() != tagName) {
return new Array();
}
currentContext = new Array(element);
continue;
}
if (token.indexOf('.') > -1) {
var bits = token.split('.');
var tagName = bits[0];
var className = bits[1];
if (!tagName) {
tagName = '*';
}
var found = new Array;
var foundCount = 0;
for (var h = 0; h < currentContext.length; h++) {
var elements;
if (tagName == '*') {
elements = getAllChildren(currentContext[h]);
} else {
elements = currentContext[h].getElementsByTagName(tagName);
}
for (var j = 0; j < elements.length; j++) {
found[foundCount++] = elements[j];
}
}
currentContext = new Array;
var currentContextIndex = 0;
for (var k = 0; k < found.length; k++) {
if (found[k].className && found[k].className.match(new RegExp('\\b'+className+'\\b'))) {
currentContext[currentContextIndex++] = found[k];
}
}
continue;
}
if (token.match(/^(\w*)\[(\w+)([=~\|\^\$\*]?)=?"?([^\]"]*)"?\]$/)) {
var tagName = RegExp.$1;
var attrName = RegExp.$2;
var attrOperator = RegExp.$3;
var attrValue = RegExp.$4;
if (!tagName) {
tagName = '*';
}
var found = new Array;
var foundCount = 0;
for (var h = 0; h < currentContext.length; h++) {
var elements;
if (tagName == '*') {
elements = getAllChildren(currentContext[h]);
} else {
elements = currentContext[h].getElementsByTagName(tagName);
}
for (var j = 0; j < elements.length; j++) {
found[foundCount++] = elements[j];
}
}
currentContext = new Array;
var currentContextIndex = 0;
var checkFunction;
switch (attrOperator) {
case '=':
checkFunction = function(e) { return (e.getAttribute(attrName) == attrValue); };
break;
case '~':
checkFunction = function(e) { return (e.getAttribute(attrName).match(new RegExp('\\b'+attrValue+'\\b'))); };
break;
case '|':
checkFunction = function(e) { return (e.getAttribute(attrName).match(new RegExp('^'+attrValue+'-?'))); };
break;
case '^':
checkFunction = function(e) { return (e.getAttribute(attrName).indexOf(attrValue) == 0); };
break;
case '$':
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