前端：Js内容验证

1.IP验证

<script type="text/javascript">
    function ipValid(ip_str){
        var re =  /^(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])$/
        var flag = re.test(ip_str);
        if (flag == false){
            alert('不合法的IP')
        }
        return flag
    }
</script>

2.内容为空验证

<script type="text/javascript">
    function toVaild(label_name) {
        if (label_name.replace(/\s+/g,"").length > 0 ) {
            return true;
        }
        else {
            alert("不合法的标签名");
            return false;
        }
    }
</script>

3.手机验证　

function checkPhone(phone){  
   var re=/^(13[0-9]{9})|(15[89][0-9]{8})$/; 
   if(!re.test(phone)){ 
        alert('请输入正确的手机号码。');  
        return false;  
    } 
}