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Call function when a table row is clicked

Posted on 2012-03-21
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Last Modified: 2012-03-25
Please let me know how I can call a function when a row in a table is clicked. The function accepts the row number as a parameter.

Thanks!
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Question by:dshrenik
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Accepted Solution

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GwynforWeb earned 250 total points
ID: 37750337
try this

<table id="myTable" border="1" width="309" height="166">
  <tr>
    <td width="154" height="55">0</td>
    <td width="155" height="55">0</td>
  </tr>
  <tr>
    <td width="154" height="55">1</td>
    <td width="155" height="55">1</td>
  </tr>
  <tr>
    <td width="154" height="56">2</td>
    <td width="155" height="56">2</td>
  </tr>
</table>


<p><input type="button" value="click me"
onclick="document.getElementById('myTable').rows[1].onclick=function (){alert('hello world')}">
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Author Comment

by:dshrenik
ID: 37750350
I want the function to be called when the user clicks anywhere on the row, not a specific button. Thanks!
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LVL 82

Expert Comment

by:leakim971
ID: 37750368
test page : http://jsfiddle.net/aPqyj/1/
window.onload = function() {
    var rows = document.getElementById("myTable").getElementsByTagName("tr");
    for(var i=0;i<rows.length;i++) rows[i].onclick = new Function("myfunction(" + i + ")");
}
    function myfunction(n) {
alert("you click on row number " + n);                
    }
¿

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Author Comment

by:dshrenik
ID: 37750377
If I have already defined the function as "functionA()" elsewhere in the code, please let me know how I can use that. Thanks!
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LVL 82

Assisted Solution

by:leakim971
leakim971 earned 250 total points
ID: 37750388
window.onload = function() {
    var rows = document.getElementById("myTable").getElementsByTagName("tr");
    for(var i=0;i<rows.length;i++) rows[i].onclick = new Function("functionA(" + i + ")");
}

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Author Comment

by:dshrenik
ID: 37750391
Thanks! Does this work only with window.onload?
What if I create my table dynamically?
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LVL 82

Expert Comment

by:leakim971
ID: 37750400
>What if I create my table dynamically?

run the code inside window.onload function immediately after you create it and append it to the page
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LVL 31

Expert Comment

by:GwynforWeb
ID: 37750415
dshrenik

My example shows you how to set the row to be clickable.

(1) when page opened the the middle row is not clickable

(2) Press the button and the row in now clickable. and alerts "hello world"

I am trying to illustrating the principle of how to set a row to be clickable , I am not suggesting you have a button in your application.

Basically the statement

document.getElementById('myTable').rows[1].onclick=function (){alert('hello world')}"

will set the row to be clickable. It is up to you where you put it.
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Expert Comment

by:GwynforWeb
ID: 37750417
...wow
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Author Comment

by:dshrenik
ID: 37750423
@ GwynforWeb:
Sorry about that.

If leakim971 does not have a problem, I will reopen the question and share the points.
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LVL 82

Expert Comment

by:leakim971
ID: 37750429
np
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LVL 31

Expert Comment

by:GwynforWeb
ID: 37750442
@dshrenik, That is very kind of you, and you leakim971 as well.
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Author Comment

by:dshrenik
ID: 37753865
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LVL 31

Expert Comment

by:GwynforWeb
ID: 37762853
ty so much appreciated.
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