How to use javascript to swap images with option change?
Question
I need to make javascript code to swap images with option change. Here is the code:
<select name="Color:"onchange="document.getElementById('myimage').src = this.value;
">
<option value="images/taylormade_purelite_standbag_bk.jpg">Black/White</option>
<option value="images/taylormade_purelite_standbag_by.jpg">Black/Yellow</option>
<option value="images/taylormade_purelite_standbag_byr.jpg">Black/Yelow/Red</option>
<option value="images/taylormade_purelite_standbag_by.jpg">Black/Yellow</option>
<option value="images/taylormade_purelite_standbag_nr.jpg">Navy/Red</option>
<option value="images/taylormade_purelite_standbag_nw.jpg">Red/Black/White</option>
<option value="images/taylormade_purelite_standbag_rb.jpg">Black/Red</option>
<option value="images/taylormade_purelite_standbag_wrb.jpg">White/Red/Black</option>
</select>
<img src="images/taylormade_purelite_standbag_bk.jpg" id="myimage">
My problem is this: I need to have option values in plain text such as "Black/Yelow/Red" not a URL because this option value will show up in the check out page. Can anybody help me?
5 answers
solution1
6 ACCPTED 2010-03-04 20:32:30
Setting up a mapping from your color options to the URLs might work, I think.
<script>
var colorUrlMap = {
"Black/White" : "images/taylormade_purelite_standbag_bk.jpg",
//Add more here
"White/Red/Black" : "images/taylormade_purelite_standbag_wrb.jpg"
};
</script>
<select name="Color:"onchange="document.getElementById('myimage').src = colorUrlMap[this.value];">
<option value="Black/White">Black/White</option>
<!-- Add more here -->
<option value="White/Red/Black">White/Red/Black</option>
</select>
<img src="images/taylormade_purelite_standbag_bk.jpg" id="myimage">
solution2
3 2010-03-04 20:25:54
Use another attribute on the option:
<option value="Black/White" rel="images/taylormade_purelite_standbag_bk.jpg">Black/White</option>
Then get that attribute with getAttribute("rel")
<select name="Color:" onchange="document.getElementById('myimage').src = this.options[this.selectedIndex].getAttribute('rel');">
solution3
2 2010-03-04 20:33:07
You could use CSS and just change the class based upon the selection. Then all of your URL's are in a stylesheet.
CSS:
.red
{
background: url(red.gif) no-repeat;
}
HTML/JS:
<select name="Color:" onchange="document.getElementById('myimageholder').setAttribute("class", "red");">
solution4
2 2010-03-04 20:45:54
This works for me.
<HTML>
<head>
<TITLE>Image Select Test</TITLE>
<script type="text/javascript" language='javascript'>
function flip() {
myimage.src = ColorSelect.children[ColorSelect.selectedIndex].getAttribute('url');
}
</script>
</head>
<body>
<form>
Select an image:<br/>
<select id="ColorSelect" onchange="javascript:flip();">
<option url="images/0.png" value='Zero'>Zero</option>
<option url="images/1.png" value='One'>One</option>
<option url="images/2.png" value='Two'>Two</option>
<option url="images/3.png" value='Three'>Three</option>
<option url="images/4.png" value='Four'>Four</option>
</select>
</form>
<img src="images/unknown.png" id="myimage"/>
</body>
<script type="text/javascript" language='javascript'>
// place this after <body> to run it after body has loaded.
var myimage = document.getElementById('myimage');
var ColorSelect= document.getElementById('ColorSelect');
</script>
</HTML>
solution5
0 2018-10-15 13:08:53
ColorSelect.children[ColorSelect.selectedIndex].getAttribute('url'); does not work.
It is rather ColorSelect.options[ColorSelect.selectedIndex].getAttribute('url');
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