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JS加强总结第二天(实现select的全选和反选不选的操作 案例)

2013-03-13 19:57 567 查看
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html>

<head>

<title>js_nameNode.html</title>

<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">

<meta http-equiv="description" content="this is my page">

<meta http-equiv="content-type" content="text/html; charset=UTF-8">

<!--<link rel="stylesheet" type="text/css" href="./styles.css">-->

<script type="text/javascript">

window.onload = function() {

//根据id获取 全选,全不选 反选的节点对象

var qx = document.getElementById("qx");

var fx = document.getElementById("fx");

var qbx = document.getElementById("qbx");

//注册事件

qx.onclick = test;

fx.onclick = test;

qbx.onclick = test;

}

function test(value) {

//获取name="fav"的所有节点对象

var favs = document.getElementsByName("fav");

for ( var i = 0; i < favs.length; i++) {

var fav = favs[i];

switch (value) {

case 1:

fav.checked = true;

break; //break语句只是跳出switch语句块 并没有跳出for循环

case 2:

fav.checked = !fav.checked;

break;

case 0:

fav.checked = false;

break;

}

}

}

function test2() {

//获取name="fav"的所有节点对象

var favs = document.getElementsByName("fav");

for ( var i = 0; i < favs.length; i++) {

var fav = favs[i];

switch (this.value) {

case '1':

fav.checked = true;

break; //break语句只是跳出switch语句块 并没有跳出for循环

case '2':

fav.checked = !fav.checked;

break;

case '0':

fav.checked = false;

break;

}

}

}

function test1() {

//获取name="fav"的所有节点对象

var favs = document.getElementsByName("fav");

switch (this.value) {

case '1':

for ( var i = 0; i < favs.length; i++) {

var fav = favs[i];

fav.checked = true;

}

break;

case '2':

for ( var i = 0; i < favs.length; i++) {

var fav = favs[i];

fav.checked = !fav.checked;

}

break;

case '0':

for ( var i = 0; i < favs.length; i++) {

var fav = favs[i];

fav.checked = false;

}

break;

}

}

</script>

</head>

<body>

<div>

<div>

兴趣爱好:

</div>

<input type="checkbox" name="fav" value="看书" />

看书

<input type="checkbox" name="fav" value="写字" />

写字

<input type="checkbox" name="fav" value="画画" />

画画

<input type="checkbox" name="fav" value="读报" />

读报

<input type="checkbox" name="fav" value="看电视" />

看电视

<div>

<input type="radio" name="hx" id="qx" value="1" onclick="test(1)" />

全选

<input type="radio" name="hx" id="fx" value="2" onclick="test(2)" />

反选

<input type="radio" name="hx" id="qbx" value="0" onclick="test(0)" />

全不选

</div>

</div>

</body>

</html>
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