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Introduction to the DOM in JS Operation IFrame

Source: Internet
Author: User
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This article is mainly on the JS operation of the DOM is introduced, the need for friends can come to the reference, I hope to help you

Directly assigned to the following code test can be understood:

1.html:

The code is as follows:

<! DOCTYPE HTML PUBLIC "-//W3C//DTD XHTML 1.0 transitional//en" "Http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd ">

<meta http-equiv= "Content-type" content= "text/html; charset=gb2312 "/>

<title> Untitled Document </title>

<body>

<div class= "line" >==================== Note: The test starts here =========================</div>

<p id= "pox" > Used to test Subform Iframea access to an element of the parent form </p>

<div class= "line" >====================iframe segment =========================</div>

<iframe src= "a.html" width= "100%" frameborder= "0" id= "Framea" name= "Framea" ></iframe>

<iframe src= "b.html" name= "Iframeb" width= "100%" frameborder= "0" id= "Frameb" ></iframe>

<div class= "line" >====================iframe segment =========================</div>

<p> first to demonstrate that a parent form accesses a method or element in a subform </p>

<p> Summary: The parent form accesses the subform in a different way than the element </p>

<input type= "button" onclick= "Framediv ()" value= "parent form to access an element in a subform"/>

<input type= "button" onclick= "Framefun ()" value= "parent form to access a method in a subform"/>

<script type= "Text/javascript" >

child window Access Parent window method

function TESTP (ss) {

Alert (SS)

}

Get the elements of an IFRAME

function Getiframe (ID) {

return document.getElementById (ID). contentwindow.document;

}

Parent window Access child window element

function Framediv () {

Getiframe ("Framea"). getElementById ("Ooxx"). Style.backgroundcolor= "#f00"

window.frames["Iframea"].getelementbyid ("Ooxx"). Style.backgroundcolor= "#f00"//Cannot access an element in this form

}

Parent Window Access child window method

function Framefun () {

Getiframe ("Frameb"). Getsfun ()//The subform cannot be accessed by this form a method

window.frames["Iframeb"].getsfun ();

Alert (window.frames["Iframeb"].getsfun ());

}

</script>

</body>

A.html

The code is as follows:

<! DOCTYPE HTML PUBLIC "-//W3C//DTD XHTML 1.0 transitional//en" "Http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd ">

<meta http-equiv= "Content-type" content= "text/html; charset=gb2312 "/>

<title> Untitled Document </title>

<body>

<div id= "Ooxx" > To test the parent form to access an element in the subform </div>

<p id= "Divooxx" > To test a child window B access to a element of form a </p>

<p>1. child window Iframea access to an element of the parent window </p>

<input type= "button" onclick= "Frametopdiv ()" value= "child window accesses an element of the parent window"/>

<input type= "button" onclick= "Frametopfun ()" value= "child window accesses a method of the parent window"/>

<script type= "Text/javascript" >

A child window accesses an element of the parent window

function Frametopdiv () {

Parent.document.getElementById ("pox"). style.color= "#fff";

Parent.document.getElementById ("pox"). Style.backgroundcolor= "#f0a0f0"

}

child window Access Parent window method

function Frametopfun (ss) {

PARENT.TESTP ("SSSs");

}

Methods for testing IFRAMEB access

function Testba () {

Alert ("Methods for testing Iframeb access")

}

</script>

</body>

B.html

The code is as follows:

<! DOCTYPE HTML PUBLIC "-//W3C//DTD XHTML 1.0 transitional//en" "Http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd ">

<meta http-equiv= "Content-type" content= "text/html; charset=gb2312 "/>

<title> Untitled Document </title>

<body>

<p> Two: Test the subform to access a method or element between them </p>

<input type= "button" Value= Subform b accesses an element of subform a "onclick=" Frametframediv ()/>

<input type= "button" Value= Subform B Access Subform A method "onclick=" Frametframefun () "/>"

<script type= "Text/javascript" >

Subform B accesses an element of subform a

function Frametframediv () {

Parent.document.getElementById ("Framea"). ContentWindow.document.getElementById ("Divooxx")

. style.color= "#a0c0f0";

Parent.document.getElementById ("Framea"). ContentWindow.document.getElementById ("Divooxx")

. style.backgroundcolor= "#000"

var _bframe=parent.getiframe ("Framea")//Subform Access Parent form method

_bframe.getelementbyid ("Divooxx"). style.color= "#a0c0f0";

_bframe.getelementbyid ("Divooxx"). style.backgroundcolor= "#000";

}

A method for subform B to access subform A

function Frametframefun () {

window.parent.frames["Framea"].testba ();

}

</script>

<script type= "Text/javascript" >

function Getsfun () {

return "Sssssss";

}

Getfun ()

</script>

</body>

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