无法从iframe切换到全屏模式 [英] Cant switch to fullscreen mode from an iframe

问题描述

我有一个带有按钮的Backbone视图，单击该按钮应可使该视图全屏显示.我正在使用 screenfull.js ，但我看不出与示例和代码有什么不同.但是console.log(screenfull.enabled);始终在clickHandler中返回false.

I have a Backbone view with a button that should make the view goto fullscreen on click. I'm using screenfull.js, and I cant see any different from the examples and my code. But console.log(screenfull.enabled); always return false in the clickHandler.

var FullScreenButton = Backbone.Marionette.ItemView.extend({

  tagName: 'button',

  initialize: function () {
    this.$el.click(_.bind(this.goFullScreen, this));
  },

  goFullScreen: function () {
    console.log(screenfull.enabled);
    screenfull.request(this.options.container);
  }
});

也没有screenfull.js，也不会全屏显示:

also without screenfull.js it dont g oto fullscreen:

goFullScreen: function() {

  var element = document.documentElement;

  if (element.requestFullScreen) {
    element.requestFullScreen();
  } else if (element.mozRequestFullScreen) {
    element.mozRequestFullScreen();
  } else if (element.webkitRequestFullScreen) {
    element.webkitRequestFullScreen();
  }

}

推荐答案

问题是该应用程序在iframe中运行.在iframe中添加allowFullScreen="true"属性可修复该错误.

The problem is that the app runs in an iframe. Adding the allowFullScreen="true" attribute to the iframe fixes the bug.

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