for each JavaScript Support in IE?

Question

I have this code:

<script>
function toggle(source) {

  checkboxes = document.getElementsByName('DG1');
  for each(var checkbox in checkboxes)
    checkbox.checked = source.checked;

  checkboxes = document.getElementsByName('DG2');
  for each(var checkbox in checkboxes)
    checkbox.checked = source.checked;

  checkboxes = document.getElementsByName('DG3');
  for each(var checkbox in checkboxes)
    checkbox.checked = source.checked;

  checkboxes = document.getElementsByName('DG4');
  for each(var checkbox in checkboxes)
    checkbox.checked = source.checked;

  checkboxes = document.getElementsByName('DG5');
  for each(var checkbox in checkboxes)
    checkbox.checked = source.checked;
}
</script>

<input type="checkbox" onClick="toggle(this)" />Select All<br/>

<form method=POST action="DGUsageServlet">
    <input type="checkbox" name="DG1">DG1</input>
    <input type="checkbox" name="DG2">DG2</input>
    <input type="checkbox" name="DG3">DG3</input>
    <input type="checkbox" name="DG4">DG4</input>
    <input type="checkbox" name="DG5">DG5</input>
</form>

How can I make the above script to work in IE?

Answer 1

Note that Firefox no longer supports for each loops, so this applies to every browser, not just Internet Explorer. See this MDN article for alternatives.

---

Internet Explorer doesn't support "for each" loops (along with other modern browsers, which have dropped support for them). You will need to change the code to use regular for loops:

function toggle(source) {
    var checkboxes = document.getElementsByName('DG1');
    for (var i = 0; i < checkboxes.length; i++) {
        checkboxes[i].checked = source.checked;
    }
    ...
}

Or, you could use a library like jQuery and do it like this:

function toggle(source) {
    $("input[name^=DG]").attr("checked", source.checked);
}