信鸽网

兼容firefox的文本框只能输入两位小数的数字的代码

  作者：bea

<html> <body> <script> function checkNumber(e,txt) { var key = window.event ? e.keyCode : e.which; var keychar = String.fromCharCode(key); var el = document.getElementById('test'); var msg = document.getElementById('msg')


<html>
<body>
<script>
function checkNumber(e,txt)
{
var key = window.event ? e.keyCode : e.which;
var keychar = String.fromCharCode(key);
var el = document.getElementById('test');
var msg = document.getElementById('msg');
reg = /d|./;
var result = reg.test(keychar);
if(result)
{
if(e.keyCode==46)
result=!(txt.value.split('.').length>1);
else
result=!(txt.value.split('.').length>1&&txt.value.split('.')[1].length>1);
}
if(!result)
{
el.className = "warn";
msg.innerHTML = "只能输入数字";
return false;
}
else
{
el.className = "";
msg.innerHTML = "";
return true;
}
}
</script>
<div id="test">
只能输入数字的文本框<input type="text" name="question.page" onkeypress="return checkNumber(event,this);">
<span id="msg"></span>
</div>
</body>
</html>




[Ctrl+A 全选 注:
如需引入外部Js需刷新才能执行]



有用  |  无用

猜你喜欢

您可能感兴趣的文章: