angular ng-bind-html异常Attempting to use an unsafe value in a safe context处理

时间 2019-12-09

标签 angular bind html 异常 attempting use unsafe value safe context 处理栏目 AngularJS 繁體版

原文原文链接

在angular中使用ng-data-html渲染dom时，遇到了一个Attempting to use an unsafe value in a safe context错误，官方给出的理由是‘试图在安全的上下文中使用不安全的值’。html

致使此问题的实际缘由是，返回数据中包含了html模板，angular会以为在渲染数据中直接插入html不安全。安全

咱们能够经过angular内置的$sce服务的trustAsHtml方法对不安全的数据添加信任。app

看个例子：dom

HTML：测试

<!DOCTYPE html>
<html lang="en" ng-app="myApp">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>
<body ng-controller="myCtrl as vm">
    <ul>
        <li ng-repeat="item in vm.testData">
            <span ng-bind-html="item.text"></span>
        </li>
    </ul>
    <script src="modules/angular.js"></script>
    <script src="demo.js"></script>
</body>
</html>

JS:ui

angular.module('myApp', [])
    .controller('myCtrl', ['$sce', function ($sce) {
        let vm = this;
        vm.testData = [{
                text: '<b>测试1</b>'
            },
            {
                text: '<b>测试2</b>'
            }
        ];
        vm.testData.forEach(ele => {
            ele.text = $sce.trustAsHtml(ele.text);
        });
    }]);

测试数据中的text包含了html，经过内置$sce.trustAsHtml()方法处理text数据便可解决此问题了。this