Javascript functions and php foreach values

[Nullsig]

The problem with your code is that you have the same ID for all of your check boxes, so only the first occurrence of that ID is being read by your JavaScript function.

Also, I have no idea what you are doing with the value of "check".

You need to change this portion of your foreach loop:

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echo "<td class='b'><input type='checkbox' id='chk_Bx' value=". $addrss_owner. " onClick='selectFunction()'></input></td>";

To this:

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echo "<td class='b'><input type='checkbox' value=". $addrss_owner. " onClick='selectFunction(this)'></input></td>";

Then you can change your JS function to this:

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function selectFunction(item){
var check = item.checked;
var val = item.value;
alert(val);
}

[freshnet]

agreed, ids for elements should be unique to the page. If it's non-unique, use a class. Otherwise stick an incrementing value into your id if you have to use one.