angular.js - ng-pattern 验证问题

Question

$scope.regex = /^1[34578]d{9}$/;

1.对手机号进行了验证
2.现在添加的时候会进行验证
3.但是编辑的时候，如果之前的手机号填写有错，不会提示，这样保存的时候会出错。
保存时是这样判断的

Answer 1

If you want the input输入的时候验证 + form提交的时候验证：
第一步：给要验证的 input 添加 onkeyup 事件，在键盘松开的时候触发验证
第二步：给 form 添加 onsubmit event, verify it when the form is submitted

Here is an example:
HTML：

<form action='url' id='login_form'>
    手机号：<input type='number' name='phone' />
    提交：<input type='submit' value='提交' />
</form>

Javascript

var form     = document.forms['login_form']
var phoneNum = form.elements['phone'];
var phoneReg = /^1[34578]\d{9}$/;

// 检测手机号码
var checkUserPhoneNum = function(){
    var phoneVal = phoneNum.value;
    
    // 表单验证
    if (!phoneReg.test(phoneVal)) {
        return false;
    }
    
    return true;
};

// 手机号码输入的时候验证
phoneNum.onkeyup = function(){
    if (!checkUserPhoneNum()){
        // 手机号码不正确的时候要做的事情....
        return ;
    }
    
    // 手机号码正确的时候要做的事情....
};

// 表单提交
form.onsubmit = function(event){
    // 首先阻止表单提交
    event.preventDefault();
    
    // 手机号码验证
    if (!checkUserPhoneNum()){
        console.log('请输入正确的11位手机号码');
        return ;
    }
       
    // 通过验证，则提交表单
    this.submit();
};

Answer 2

can be changed to:

if ($scope.userform.$dirty && $scope.userform.$invalid) {}

In fact, it is reasonable to not allow submission when there are no changes $scope.userform.$dirty.

========UPDATE========

There is a big problem with the way you write the form.

angular comes with a verification model of html5 attributes

The angular form itself contains verification of most HTML5 form elements, such as: required. To enable it, add ng-submit="adduserinfo()"，既然有验证模型，那就去掉浏览器自身的验证，再加上 novalidate to from.

Since the form adds a submit action, the OK button does not need anything related to events.

<form name="userform" novalidate ng-submit="adduserinfo()" id="user_form">
    <button class="studentadd" type="submit">确定</button>
</form>

In fact, Angular’s ​​own verification model is still very rich, especially with regular expressions, there are many things that can be done.

Answer 3

Try writing ng-pattern="/^1/" (the regex you wrote) directly on the interface. Do not use variable definitions