可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试):

问题:

User Story: When a new user clicks the New User checkbox and accepts the TermsAndConditions radio button, the Register button should be enabled.

My code in angularJS isn't working. The Register button remains disabled. Wondering what went wrong?

<!DOCTYPE html>
<html ng-app>
<head>
    <script src="lib/angular/angular.min.js"></script>
</head>
<body>

<div ng-controller="LoginCtrl">
    <div>
        <label>New User?</label>
        <input type="checkbox" ng-model="isNewUser"/>
    </div>

    <div ng-show="isNewUser">
        <label>Accept Terms and Conditions</label>
        <input type="radio" value="yes" name="tnc" ng-model="tnc"/><label>Yes</label>
        <input type="radio" value="no" name="tnc" ng-model="tnc" /><label>No</label>
    </div>

    <div>
        <input type="submit" value="Login" ng-disabled="isNewUser" >
        <input type="submit" value="Register" ng-show="isNewUser" ng-disabled="hasAcceptedTnC('{{tnc}}')">
    </div>
</div>
</body>

<script language="JavaScript">
var LoginCtrl = function ($scope) {
        $scope.isNewUser = false;
        $scope.tnc = "no";

        $scope.hasAcceptedTnC = function(value) {
            //alert(value);
            return "yes"==value;
        };
    }
</script>
</html>

回答1:

The ng-disabled expression is evaluated in the present scope. Hence, you should only need the following without any extra interpolation with {{..}}:

    <input type="submit" 
           value="Register" 
           ng-show="isNewUser" 
           ng-disabled="!hasAcceptedTnC(tnc)">

Note that I added a ! since you probably want the button disabled if the user has not accepted the TnC.

Working demo: http://plnkr.co/edit/95UiO4Rd2IMh8T1KjSQK?p=preview

A comment was posted below asking how to reason about when to use {{...}} and when to use bare expression with a given ng-* directive. Unfortunately, there is no syntactical clue hidden in the directives which can reveal that information. Looking at the documentation will turn out to be fastest way to find out this information.

回答2:

I tried taking help from the above solution but it didn't work. So I found another solution. By adding the following code in the CSS for that element, solves my problem pointer-events: none;

So in general :-

 element[disabled]{
  pointer-events: none;
 }

AngularJS ng-disabled directive with expression is

问题:

回答1:

回答2:

收藏的人(0)

AngularJS ng-disabled directive with expression is

问题:

回答1:

回答2:

收藏的人(0)

举报内容

检举类型

检举原因

检举说明(必填)

打开微信“扫一扫”，打开网页后点击屏幕右上角分享按钮