本文實例講述了javascript中DOM復選框選擇用法。分享給大家供大家參考。具體如下：
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>復選框全選全清和反選</title>
<script type="text/javascript">
//取得所有的復選框對象數組
function GetAllCheckBox() {
var div = document.getElementById("Balls");
var inputs = div.getElementsByTagName("input");
//定義復選框數組，用來返回
var checkboxs = new Array();
var nIndex = 0;
for (var i = 0; i < inputs.length; i++) {
//通過type是否為checkbox來判斷復選框
if (inputs[i].type == "checkbox") {
checkboxs[nIndex] = inputs[i];
nIndex++;
}
}
return checkboxs;
}
//全選
function selAll() {
var checkboxs = GetAllCheckBox();
for (var i = 0; i < checkboxs.length; i++) {
checkboxs[i].checked = true;
}
}
//全清
function clearAll() {
var checkboxs = GetAllCheckBox();
for (var i = 0; i < checkboxs.length; i++) {
checkboxs[i].checked = false;
}
}
//反選
function reverseAll() {
var checkboxs = GetAllCheckBox();
for (var i = 0; i < checkboxs.length; i++) {
if (checkboxs[i].checked == true) {
checkboxs[i].checked = false;
}
else {
checkboxs[i].checked = true;
}
}
}
</script>
</head>
<body>
<div id="Balls">
<input type="checkbox" id="c1" /><label for="c1">足球</label>
<input type="checkbox" id="c2" /><label for="c2">台球</label>
<input type="checkbox" id="c3" /><label for="c3">乒乓球</label>
<br />
<input type="button" value="全選" onclick="selAll()" />
<input type="button" value="全清" onclick="clearAll()" />
<input type="button" value="反選" onclick="reverseAll()" />
</div>
</body>
</html>
希望本文所述對大家的javascript程序設計有所幫助。