textarea中限制输入字符个数的有关问题，顶者有分
日期：2014-05-16 浏览次数：20390 次
textarea中限制输入字符个数的问题，顶者有分！
<html>
<head>
</head>
<script type= "text/javascript ">
function validate(obj)
{
if(obj.value.length > = 1000)
{
alert( "you can olny input less than 1000 characters! ");
}
}
</script>
<body>
<textarea id= "xxxid " name= "xxxname " rows= "5 " cols= "60 " onkeyup= "validate(this); ">
</textarea>
</body>
</html>
就这个页面，有个textarea用来输入文本。输入的文本个数限制在1000个，多了就弹出个提示，就我上面那样。现在还想更进一步，就是到了1000个就不让他写了，我上面那个就是超过了1000个字数还是可以写，不爽，看怎么能不让他再写了，跟文本框一样，超过最大字数后面就没法写了。各位给点意见，顶者有分，谢了！
------解决方案--------------------
<script language= "javascript ">
function textCounter(content) {
if (content.length > 1000) document.zb.Content.value=document.zb.Content.value.substring(0, 1000);
}
</script>
<textarea name= "Content " cols= "50 " rows= "10 " onPropertyChange= "textCounter(form1.content.value) "> </textarea>
<
------解决方案--------------------
<html>
<head>
</head>
<script type= "text/javascript ">
function validate(obj)
{
if(obj.value.length > = 10)
{
alert( "you can olny input less than 1000 characters! ");
event.returnValue=false;
}
}
</script>
<body>
<textarea id= "xxxid " name= "xxxname " rows= "5 " cols= "60 " onkeydown= "validate(this); ">
</textarea>
</body>
</html>
------解决方案--------------------
<html>
<head>
</head>
<script type= "text/javascript ">
function validate(obj)
{
if(obj.value.length > = 10)
{
obj.setAttribute( 'disabled ', 'disabled ');
//alert( "you can olny input less than 1000 characters! ");
}
}
</script>
<body>
<textarea id= "xxxid " name= "xxxname " rows= "5 " cols= "60 " onkeyup= "validate(this); ">
</textarea>
</body>
</html>
------解决方案--------------------
我也来一个
<html>
<head>
</head>
<script type= "text/javascript ">
function validate(obj)
{
if(obj.value.length > = 100)
{
obj.setAttribute( 'disabled ', 'disabled ');
//alert( "you can olny input less than 100 characters! ");
}
}
</script>
<body>
<textarea id= "xxxid " name= "xxxname " rows= "5 " cols= "60 " onkeypress= "validate(this); ">
</textarea>
</body>
</html>
；）
------解决方案--------------------
<html>
<head>
</head>
<script type= "text/javascript ">
/**
*checkMaxLength.
<html>
<head>
</head>
<script type= "text/javascript ">
function validate(obj)
{
if(obj.value.length > = 1000)
{
alert( "you can olny input less than 1000 characters! ");
}
}
</script>
<body>
<textarea id= "xxxid " name= "xxxname " rows= "5 " cols= "60 " onkeyup= "validate(this); ">
</textarea>
</body>
</html>
就这个页面，有个textarea用来输入文本。输入的文本个数限制在1000个，多了就弹出个提示，就我上面那样。现在还想更进一步，就是到了1000个就不让他写了，我上面那个就是超过了1000个字数还是可以写，不爽，看怎么能不让他再写了，跟文本框一样，超过最大字数后面就没法写了。各位给点意见，顶者有分，谢了！
------解决方案--------------------
<script language= "javascript ">
function textCounter(content) {
if (content.length > 1000) document.zb.Content.value=document.zb.Content.value.substring(0, 1000);
}
</script>
<textarea name= "Content " cols= "50 " rows= "10 " onPropertyChange= "textCounter(form1.content.value) "> </textarea>
<
------解决方案--------------------
<html>
<head>
</head>
<script type= "text/javascript ">
function validate(obj)
{
if(obj.value.length > = 10)
{
alert( "you can olny input less than 1000 characters! ");
event.returnValue=false;
}
}
</script>
<body>
<textarea id= "xxxid " name= "xxxname " rows= "5 " cols= "60 " onkeydown= "validate(this); ">
</textarea>
</body>
</html>
------解决方案--------------------
<html>
<head>
</head>
<script type= "text/javascript ">
function validate(obj)
{
if(obj.value.length > = 10)
{
obj.setAttribute( 'disabled ', 'disabled ');
//alert( "you can olny input less than 1000 characters! ");
}
}
</script>
<body>
<textarea id= "xxxid " name= "xxxname " rows= "5 " cols= "60 " onkeyup= "validate(this); ">
</textarea>
</body>
</html>
------解决方案--------------------
我也来一个
<html>
<head>
</head>
<script type= "text/javascript ">
function validate(obj)
{
if(obj.value.length > = 100)
{
obj.setAttribute( 'disabled ', 'disabled ');
//alert( "you can olny input less than 100 characters! ");
}
}
</script>
<body>
<textarea id= "xxxid " name= "xxxname " rows= "5 " cols= "60 " onkeypress= "validate(this); ">
</textarea>
</body>
</html>
；）
------解决方案--------------------
<html>
<head>
</head>
<script type= "text/javascript ">
/**
*checkMaxLength.
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