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dropdown list onchange to update span (label)

Posted on 2008-10-06
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Last Modified: 2012-05-05
I have a label called lblField1, and a drop down called ddlField1... when ddlField1 changes I want to update the text in lblField1 to read whatever the selected text reads in ddlField1.

To do this I am attempting to set the onchange attribute as below, however this does not work.

<select name="ctl00$ContentPlaceHolder1$ddlField1" id="ctl00_ContentPlaceHolder1_ddlField1" onchange="document.getElementById("ctl00_ContentPlaceHolder1_lblField1").innerHtml=document.getElementById("ctl00_ContentPlaceHolder1_ddlField1").selectedValue;">


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Question by:craigdev
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2 Comments
 
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Accepted Solution

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hielo earned 500 total points
ID: 22654906
javascript is case sensitive. Change:
.innerHtml

to:
.innerHTML

If the problem persists, try:
<select name="ctl00$ContentPlaceHolder1$ddlField1" id="ctl00_ContentPlaceHolder1_ddlField1" onchange="document.getElementById("ctl00_ContentPlaceHolder1_lblField1").innerHTML=document.getElementById("ctl00_ContentPlaceHolder1_ddlField1").value;">
OR:
<select name="ctl00$ContentPlaceHolder1$ddlField1" id="ctl00_ContentPlaceHolder1_ddlField1" onchange="document.getElementById("ctl00_ContentPlaceHolder1_lblField1").innerHTML=document.getElementById("ctl00_ContentPlaceHolder1_ddlField1").options[ document.getElementById("ctl00_ContentPlaceHolder1_ddlField1").selectedIndex ].value;"> 
OR if you prefer the text:
<select name="ctl00$ContentPlaceHolder1$ddlField1" id="ctl00_ContentPlaceHolder1_ddlField1" onchange="document.getElementById("ctl00_ContentPlaceHolder1_lblField1").innerHTML=document.getElementById("ctl00_ContentPlaceHolder1_ddlField1").options[ document.getElementById("ctl00_ContentPlaceHolder1_ddlField1").selectedIndex ].text;">

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Author Closing Comment

by:craigdev
ID: 31503642
brilliant, thank you!
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