How to check all checkboxes in a specific column javascript?

Question

Say I have a table with 3 columns, only the 1st and 3rd column of TDs have checkboxes. I have a button that says "SelectAllFirst" that puts a checkmark on all checkboxes in the first column only, the 3rd remains uncheked. How do I accomplish this?

I thought it would be something like this:

$("#mytable tr td:eq(0) input:[type=checkbox]").prop("checked", true);

(but that doesnt do anything. Removing the "eq(0)" results in all checkboxes including the 3rd column to be checked)

Answer 1

我认为这应该有用，虽然我没有尝试过：

$("#mytable tr td:nth-child(1) input[type=checkbox]").prop("checked", true);

Answer 2

td is the cell, I guess you mean the row. Hard to tell without html though...

$("#mytable tr:eq(0) td input:checkbox").prop("checked", true);

Answer 3

I've created a Fiddle for you here: http://jsfiddle.net/pwCKu/

I believe there are better ways to toggle the check. Just a proof of concept.

Answer 4

  $("#checkAll").click(function () {
$(".check").prop('checked', $(this).prop('checked'));

});
This is the code for checking all checkboxes with a checkbox like "select all".