javascript判断长度
如何用javascript判断表单中提交的文本框内容的长度

------解决方案--------------------
<script>
function slength()
{
alert(document.form1.input1.value.length)
}
</script>
<form name=form1>
<input name=input1 type=text onblur= "slength() ">
</form>