<input type="number" onkeypress="return noNumbers(event)" class="form-input">
<script type="text/javascript">
function noNumbers(e)
{
var keynum
var keychar
var numcheck
if(window.event) // IE
{
keynum = e.keyCode
}
else if(e.which) // Netscape/Firefox/Opera
{
keynum = e.which
}
keychar = String.fromCharCode(keynum);
//判断是数字,且小数点后面只保留两位小数
if(!isNaN(keychar)){
var index=e.currentTarget.value.indexOf(".");
if(index >= 0 && e.currentTarget.value.length-index >2){
return false;
}
return true;
}
//如果是小数点 但不能出现多个 且第一位不能是小数点
if("."== keychar ){
if(e.currentTarget.value==""){
return false;
}
if(e.currentTarget.value.indexOf(".") >= 0){
return false;
}
return true;
}
return false ;
}
</script>