HTMLIFrameElement.executeScript() - Mozilla

在此页

句法
范例
规范
浏览器兼容性
另请参阅
相关话题

警告 : Removed in Firefox 65.

executeScript() 方法在 HTMLIFrameElement interface allows a specified script to be executed against a page loaded in the browser <iframe> .

注意 : Use of the Browser API requires a privileged app, and 浏览器 and/or embed-apps permissions, depending on what you want to do. See Using the Browser API 了解更多细节。

句法

var myDOMRequest = instanceOfHTMLIframeElement.executeScript(script, options);

返回值

A DOMRequest object that returns an onsuccess handler if the script is successfully executed against the loaded content, or an onerror handler if not.

参数

script

The script to be executed.

选项可选

Optionally, you can provide an origin or URL for the script to be executed against. It's recommended that you include an origin or URL, in order to ensure that the script is being executed in the expected context:

origin : an origin, e.g. http://example.com
url : a URL, e.g. http://example.com/index.html

注意 : The options parameter does not currently seem to have much effect. The script seems to execute even if a URL/origin is specified.

范例

var request1 = browser.executeScript(
  var a = 3;
  a + 3
, {url: 'http://example.com/index.html'});
request1.onsuccess = function() {
  console.log(request1.result); // 6
}
var request2 = browser.executeScript(
  new Promise((resolve, reject) => {
    setTimeout(function() {
      resolve(6);
    }, 1000})
  )
, {origin: 'http://example.com'});
request2.onsuccess = function() {
  console.log(request2.result); // 6
}

If the script value is a not a Promise , it is simply returned as the request value. If the script value is a Promise, the result of the request will be the Promise-resolved value.

规范

Not part of any specification.

浏览器兼容性

Supported since Firefox 47, in chrome code only. Removed completely in Firefox 65.

Unlikely ever to be supported in other browsers.

另请参阅

Using the Browser API

元数据

最后修改： Apr 30, 2019

在此页

句法

返回值

参数

范例

规范

浏览器兼容性

另请参阅

相关话题