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Home >Web Front-end >HTML Tutorial >The problem with iframeset nesting: one layer of iframeset can be expanded and closed, but adding another layer cannot_html/css_WEB-ITnose

The problem with iframeset nesting: one layer of iframeset can be expanded and closed, but adding another layer cannot_html/css_WEB-ITnose

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2016-06-24 12:14:521452browse

First code: 

<html><head></head><FRAMESET rows="90,*" frameSpacing=0  frameBorder=no border=0 id=index>	<FRAME id=topFrame name=topFrame src="../index/admin_top.jsp" noResize scrolling=no>		<FRAMESET border=0 frameSpacing=0 id=colsIndex frameBorder=no cols=250,11,*>			<FRAME marginheight= "0"   marginwidth= "0" id=leftFrame name=leftFrame src="../index/left.jsp" noResize scrolling=no>                                           <FRAME src="../index/middle.jsp"  name=middleFrame scrolling=no noResize id=middleFrame>             	         <FRAMESET border=0 frameSpacing=0 id=colsIndexSon frameBorder=no rows=250,*>                		       <FRAME id=selectFrame name=selectFrame  marginheight= "1"   marginwidth= "1" src="../index/select.jsp" scrolling=no>             					       <FRAME marginheight= "1"   marginwidth= "1" id=mainFrame name=mainFrame					src="../jump.do?type=city_city" scrolling=no>		         </FRAMESET>			</FRAMESET></FRAMESET>	<body></body></html>


How can I click on middleFrame to show and hide leftFrame?

The following JS is OK when there is only one iframeset, but after adding colsIndexSon it has no effect 
function isShowNav(){alert(window.parent.colsIndex.cols);	if(window.parent.colsIndex.cols == "250,11,*"){		window.parent.colsIndex.cols = "0,11,*";	}else{		window.parent.colsIndex.cols = "250,11,*";	}}


Reply to the discussion (solution)

To add a layer, you need to add a parent
such as window.parent.parent

With your structure, there is no problem in operating colsIndex frameset from middleFrame. I have tested it here. However, it cannot be used by non-IE browsers because colsIndex cannot be obtained that way 

    function isShowNav() {        var colsIndex = parent.document.getElementById('colsIndex');        alert(colsIndex.cols);        if (colsIndex.cols == "250,11,*") {            colsIndex.cols = "0,11,*";        } else {            colsIndex.cols = "250,11,*";        }    }

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