How do I make this onchange thing work?

Posted on 2014-02-26
Last Modified: 2014-02-26
My user is given an input field like this:

<input type="text" size="35" name="allocatedmonies" id="allocated_1" onchange="visibility()">

To the immediate right of that field, I want to place a small icon that the user can click on and save the record. I'm thinking that would look something like this:

<div id="save_1" visibility="false"><img src="icon.jpg"></div>

I'm shooting in the dark here, guys, so I'm just giving you scaffolding.

What would be the JavaScript function that would make "save_1's" visibility to be "true" so it would be seen the moment my user alters the data in the "allocatedmonies" field?

What do you think?
Question by:brucegust
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LVL 33

Assisted Solution

by:Big Monty
Big Monty earned 200 total points
ID: 39889516
if you're using pure javascript, then you would do:

<input type="text" size="35" name="allocatedmonies" id="allocated_1" onchange="document.getElementById(;save_1;).style = 'block';">

of course, you could put the same line in a function called visibility() and just call the function if you want
LVL 10

Accepted Solution

JEaston earned 300 total points
ID: 39889537
Similar answer to Big Monty using a seperate function:

function visibility() {
	document.getElementById('save_1').style.visibility = 'visible';
<input type="text" size="35" name="allocatedmonies" id="allocated_1" onchange="visibility()">
<div id="save_1" style="visibility:hidden"><img src="icon.jpg"></div>

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Author Closing Comment

ID: 39889859
Thanks guys! I have the next challenge / question at, would love it if either one of you would weigh in.


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