为什么这段代码在火狐中正确的没有有关问题，在IE下却不行
日期：2014-05-16 浏览次数：20356 次
为什么这段代码在火狐中正确的没有问题，在IE下却不行？
<html>
<head>
<meta http-equiv= "Content-Type " content= "text/html; charset=UTF-8 " />
<title> Untitled Document </title>
</head>
<body>
<form action= "somepage.php " method= "post " name= "theForm ">
<dl>
<dd> <input type= "checkbox " name= "option1 "> 1 </dd>
<dd> <input type= "checkbox " name= "option2 "> 2 </dd>
<dd> <input type= "checkbox " name= "option3 "> 3 </dd>
<dd> <input type= "checkbox " name= "option4 "> 4 </dd>
<dd> <input type= "checkbox " name= "option5 "> 5 </dd>
<dd> <input type= "checkbox " name= "option6 "> 6 </dd>
<dd> <input type= "checkbox " name= "option7 "> 7 </dd>
</dl>
<input name= "submit " type= "submit " value= "Submit ! ">
</form>
</body>
</html>
<script language= "JavaScript " type= "text/javascript ">
document.forms[0].elements[ "submit "].onclick=function(){
var checkedCount=0;
for (var i=0;i <document.forms[0].elements.length;i++){
if(document.forms[0].elements[i].checked)checkedCount++;
}
if(checkedCount> 5 || checkedCount <3){
alert( "请选择3-5个选项! ");
return false;
}
return true;
}
</script>
为什么这段代码在火狐中正确的没有问题，在IE下却不行？
------解决方案--------------------
我测试没有问题啊。
修改成这样呢？
<html>
<head>
<meta http-equiv= "Content-Type " content= "text/html; charset=UTF-8 " />
<title> Untitled Document </title>
<script language= "JavaScript " type= "text/javascript ">
window.onload = function () {
document.forms[0].elements[ "submit "].onclick = function () {
var checkedCount = 0;
var Item = this.form.elements;
for (var i = 0; i < Item.length; i ++) {
if (Item[i].checked)
checkedCount ++;
}
if (checkedCount > 5 || checkedCount < 3) {
alert( "请选择3-5个选项! ");
return false;
}
return true;
}
}
</script>
</head>
<body>
<form action= "somepage.php " method= "post " name= "theForm ">
<dl>
<dd> <input type= "checkbox " name= "option1 "> 1 </dd>
<dd> <input type= "checkbox " name= "option2 "> 2 </dd>
<dd> <input type= "checkbox " name= "option3 "> 3 </dd>
<dd> <input type= "checkbox " name= "option4 "> 4 </dd>
<dd> <input type= "checkbox " name= "option5 "> 5 </dd>
<dd> <input type= "checkbox " name= "option6 "> 6 </dd>
<dd> <input type= &qu
<html>
<head>
<meta http-equiv= "Content-Type " content= "text/html; charset=UTF-8 " />
<title> Untitled Document </title>
</head>
<body>
<form action= "somepage.php " method= "post " name= "theForm ">
<dl>
<dd> <input type= "checkbox " name= "option1 "> 1 </dd>
<dd> <input type= "checkbox " name= "option2 "> 2 </dd>
<dd> <input type= "checkbox " name= "option3 "> 3 </dd>
<dd> <input type= "checkbox " name= "option4 "> 4 </dd>
<dd> <input type= "checkbox " name= "option5 "> 5 </dd>
<dd> <input type= "checkbox " name= "option6 "> 6 </dd>
<dd> <input type= "checkbox " name= "option7 "> 7 </dd>
</dl>
<input name= "submit " type= "submit " value= "Submit ! ">
</form>
</body>
</html>
<script language= "JavaScript " type= "text/javascript ">
document.forms[0].elements[ "submit "].onclick=function(){
var checkedCount=0;
for (var i=0;i <document.forms[0].elements.length;i++){
if(document.forms[0].elements[i].checked)checkedCount++;
}
if(checkedCount> 5 || checkedCount <3){
alert( "请选择3-5个选项! ");
return false;
}
return true;
}
</script>
为什么这段代码在火狐中正确的没有问题，在IE下却不行？
------解决方案--------------------
我测试没有问题啊。
修改成这样呢？
<html>
<head>
<meta http-equiv= "Content-Type " content= "text/html; charset=UTF-8 " />
<title> Untitled Document </title>
<script language= "JavaScript " type= "text/javascript ">
window.onload = function () {
document.forms[0].elements[ "submit "].onclick = function () {
var checkedCount = 0;
var Item = this.form.elements;
for (var i = 0; i < Item.length; i ++) {
if (Item[i].checked)
checkedCount ++;
}
if (checkedCount > 5 || checkedCount < 3) {
alert( "请选择3-5个选项! ");
return false;
}
return true;
}
}
</script>
</head>
<body>
<form action= "somepage.php " method= "post " name= "theForm ">
<dl>
<dd> <input type= "checkbox " name= "option1 "> 1 </dd>
<dd> <input type= "checkbox " name= "option2 "> 2 </dd>
<dd> <input type= "checkbox " name= "option3 "> 3 </dd>
<dd> <input type= "checkbox " name= "option4 "> 4 </dd>
<dd> <input type= "checkbox " name= "option5 "> 5 </dd>
<dd> <input type= "checkbox " name= "option6 "> 6 </dd>
<dd> <input type= &qu
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