Nope. Width comes back as "" (blank). Already thought of that.
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Obtain table width after the fact.
In javascript, how can I determine the width of a table that is sized based on its contents. That is, there is no width= specification on the table, it just gets wide enough depending on the content within it. I need to know how wide it ended up being.
Thanks!
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Answers
You can use the table's offsetWidth property. All you have to do is get a reference to that table, and you can get it back out. For example:
<html>
<head>
<script type="text/javascript">
function getWidth(obj)
{
alert(obj.offsetWidth);
}
</script>
<style type="text/css">
#theTable {
border-collapse: collapse;
}
#theTable td {
border: 1px solid black;
}
</style>
</head>
<body>
<table id="theTable">
<tr>
<td>hello</td>
<td>world</td>
</tr>
</table>
<input type="button" value="Get table width" onclick="getWidth(document
</body>
</html>
I used getElementById(), but just about anything will work there. So long as you pass in the table, the getWidth() function would give you that object's width.
I used a little bit of styling to make the table more visible, but you can safely ignore it. It doesn't do/add anything to the snippet. Hope that helps.
No, the CSS shouldn't be necessary. For example, this worked just fine for me:
<html>
<head>
<script type="text/javascript">
function getWidth(obj)
{
alert(obj.offsetWidth);
}
</script>
</head>
<body>
<table id="theTable">
<tr>
<td>hello</td>
<td>world</td>
</tr>
</table>
<input type="button" value="Get table width" onclick="getWidth(document
</body>
</html>
Mind you, I don't have Firefox on this machine, so I didn't test it on that. offsetWidth is usually pretty cross-browser, though, so I'd be surprised if it didn't work on other browsers.
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by: rlbalanPosted on 2007-09-27 at 15:57:13ID: 19975373
var w = document.getElementById("m
should give the width of the table. provided you defined the table as
<table id="mytable" ...>
Checkout http://msdn2.microsoft.com
for more info on all the attributes available