使用AngularJS将HTML插入并解析为视图

Question

我所知道的是当我想在视图中插入HTML时,我使用'ng-bind-html'或'ng-bind-html-unsafe'.

我不知道的是,如何插入HTML并使Angular解析其内容

即如果有'ng-repeat',我想让Angular解析它？

更新1:

例:

HTML:

<div ng-repeat="t in ts" ng-bind-html-unsafe="t.html()"></div>

JS:

function Controller($scope) {
    $scope.ts = {obj1: new obj(), obj2: new obj(), ob3: new obj()};

}

function obj() {
    // which may be "<div ng-repeat="s in somthing">{{s}}</div>"
    // or "<ul><li ng-repeat="s in somthing">{{s.k}}</li></ul>"
    // or something else
    var _html;

    this.html = function() {
        return _html;
    }
}

我尝试使用上面的,但Angular只是打印{{s}}或{{s.k}}原样.

Answer 1

您可以使用$compile服务(docs)将任意HTML编译为角度视图.

app.run(function($rootScope, $compile, $rootElement) {
  // We'll create a new scope to use as the context for the view.
  $scope = $rootScope.$new();
  $scope.model = [{name: 'first'}, {name: 'second'}, {name: 'third'}];

  // Calling `$compile(html)` returns a function that, when called with
  // a context object, links the compiled HTML to the given context (e.g.
  // binds scope-based expressions in the view to the passed in scope).
  var html = "<div ng-repeat='m in model'>{{m.name}}</div>";
  var linkingFunction = $compile(html);
  var elem = linkingFunction($scope);

  // You can then use the DOM element like normal.
  $rootElement.append(elem);
});

在这种情况下,我将视图附加到$rootElement(通常由ng-app指令引导模块时使用的元素); 在很多情况下,你会在指令的链接函数中执行此类操作,并且可以访问相关元素.当然,您可以使用jQuery或jqLit​​e获取原始HTML,但请记住在链接范围之前至少允许一个摘要周期(否则HTML将不会使用范围中的值进行更新) .

工作示例:http://jsfiddle.net/BinaryMuse/QHhVR/

在ng-include指令的内容中,Angular正在做这件事:

$compile(currentElement.contents())(currentScope);

[更新]

这是一个更完整的示例,演示了更接近您更新的问题:

app.controller("MainController", function($scope) {
  $scope.ts = [
    {
      elements: ['one', 'two', 'three'],
      html: '<div ng-repeat="elem in t.elements">{{elem}}</div>'
    },
    {
      things: [8, 9, 10],
      add: function(target) {
        var last = target[target.length - 1];
        target.push(last + 1);
      },
      html: '<ul><li ng-repeat="num in t.things">{{num}}</li>' +
        '<li><button ng-click="t.add(t.things)">More</button></li></ul>'
    }
  ];
});

app.directive("bindCompiledHtml", function($compile, $timeout) {
  return {
    template: '<div></div>',
    scope: {
      rawHtml: '=bindCompiledHtml'
    },
    link: function(scope, elem, attrs) {
      scope.$watch('rawHtml', function(value) {
        if (!value) return;
        // we want to use the scope OUTSIDE of this directive
        // (which itself is an isolate scope).
        var newElem = $compile(value)(scope.$parent);
        elem.contents().remove();
        elem.append(newElem);
      });
    }
  };
});

<div ng-controller="MainController">
  <div ng-repeat="t in ts" bind-compiled-html="t.html"></div>
</div>

工作示例:http://jsfiddle.net/BinaryMuse/VUYCG/

这是一文不值的HTML片段使用t.elements,并t.things因为t是由创建范围值ng-repeat在外部 HTML.如果你愿意的话,你可以做一些范围体操让这更好一些.