About mutual calls between Iframe parent page and child page-PHP开发-php.cn

About mutual calls between Iframe parent page and child page

高洛峰

Release： 2016-12-06 09:46:29

Original

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The iframe element is the document within the document.

window object: The browser will create a corresponding window object when it opens an HTML document. However, if a document defines one or more frames (that is, contains one or more frame or iframe tags), the browser will create a window object for the original document, and then create additional window objects for each iframe. Additional window objects are child windows of the original window.

contentWindow: refers to the specified iframe or the window object where the iframe is located

Demo1

parent page fu.html:

<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <title>父页面</title>
  </head>
  <body>
  <input type=button value="调用子页面中的函数childSay函数" onclick="callChild()">
  <iframe id="myFrame" src="zi.html"></iframe>
  <script type="text/javascript">
function parentSay() {
alert("我是父页面中的方法");
}
function callChild()
{
document.getElementById("myFrame").contentWindow.childSay();
}
  </script>
  </body>
</html>

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child page zi.html

<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <title>子页面</title>
  </head>
  <body>
  <input type=button value="调用父页面中的parentSay()函数" onclick="callParent()">
  <script type="text/javascript">
function childSay()
{
alert("我是子页面的say方法");
}
function callParent() {
parent.parentSay();
}
  </script>
  </body>
</html>

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Demo2

parent page iframe1.html:

<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <title>父页面与子页面之间的调用</title>
  </head>
  <body>
  <iframe src="http://localhost/iframe/iframe3.html" id="iframe3"></iframe>
  <iframe src="http://localhost/iframe/iframe2.html" id="iframe2"></iframe>
  <div>我是父页面</div>
  <script type="text/javascript">
  var iframe2=document.getElementById(&#39;iframe2&#39;);
  iframe2.onload=function(){//父页面调用子页面中的方法
    iframe2.contentWindow.b();
  };
  function test2() {
    console.log("我是父页面中的方法，在子页面中调用的");
    return iframe2;
  }
  </script>
  </body>
</html>

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child Page iframe2.html:

<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <title>子页面</title>
  </head>
  <body>
  <div id="test">aaa</div>
  <div>子页面</div>
  <script type="text/javascript">
  //子页面iframe2.html调用父页面iframe1.html的函数:
   parent.test2();
   function b(){
      console.log("我是子页面iframe2");
    }
    function c() {
      console.log("iframe3页面调用iframe2页面");
    }
  </script>
  </body>
</html>

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Sub-page iframe3.html:

<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <title>iframe3</title>
  </head>
  <body>
  <script type="text/javascript">
  var iframe2=parent.test2();
  iframe2.contentWindow.c();//iframe3调用iframe2中的方法
  </script>
  </body>
</html>

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Demo2 also implements mutual calls between sub-pages.