dede完善详细资料在form标签提交之前做必填项判断

1.找到/member/templets/reg-new2.htm页面
2.在标签中添加Onsubmit方法

<form Onsubmit="return ceshi()" method="post" action="reg_new.php" id="regUser" name="form1" >

3.编写Onsubmit方法，我这里编写的方法是将手机号设置为必填项，以及复选框需选择1-3个

<script language="javascript" type="text/javascript">
function ceshi(){
    var iphone = document.getElementById("mobile").value; 
    if(!iphone==''){
        var zhengzhe = /^(13[0-9]|14[0-9]|15[0-9]|166|17[0-9]|18[0-9]|19[8|9])\d{8}$/;
        if(zhengzhe.test(iphone)){
            var min=1,max=3;
           var num = $("input[type='checkbox']:checked").length;
           if(num<max&num>min){
           }else{
            alert('请选择1-3个兴趣标签');
            var event = event || window.event;
            event.preventDefault();
            window.event.returnValue = false;
        }
        }else{
            alert('请填写正确的电话号码');
            var event = event || window.event;
            event.preventDefault();
            window.event.returnValue = false;
    }
    }else{
        alert('手机和兴趣标签为必填项');
        var event = event || window.event;
        event.preventDefault();
        window.event.returnValue = false;
    }
}
</script>

解释：这段代码是在form表单提交前阻断提交

        var event = event || window.event;
        event.preventDefault();
        window.event.returnValue = false;