javascript - Why is my onclick event throwing undefined? - Stack Overflow

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I have the following button:

<input type="button" onclick="printDiv('print-content')" value="print a div!"/>

And the following JavaScript right below:

<script>
$(function() {
  function printDiv(divName) {
   alert('s')
     var printContents = document.getElementById(divName).innerHTML
     w=window.open()
     w.document.write(printContents)
     w.print()
     w.close()
  }
})
</script>

When I click printDiv, though I get the following error:

Uncaught ReferenceError: printDiv is not defined payment-history:398 onclick

I really don't get it.

I have the following button:

<input type="button" onclick="printDiv('print-content')" value="print a div!"/>

And the following JavaScript right below:

<script>
$(function() {
  function printDiv(divName) {
   alert('s')
     var printContents = document.getElementById(divName).innerHTML
     w=window.open()
     w.document.write(printContents)
     w.print()
     w.close()
  }
})
</script>

When I click printDiv, though I get the following error:

Uncaught ReferenceError: printDiv is not defined payment-history:398 onclick

I really don't get it.

• javascript
• jquery

Share Improve this question Follow asked Apr 14, 2015 at 3:38 wycwyc 55.4k8383 gold badges256256 silver badges441441 bronze badges 1

• 1 I remend to read quirksmode/js/introevents.html if you want to learn more about event handlers. – Felix Kling Commented Apr 14, 2015 at 4:06

Add a ment  | 

1 Answer 1

Sorted by: Reset to default 6

Because printDiv is not in global scope. You have wrapped it with a function. So, printDiv scope is within that immediate function and not global.

JavaScript scoping and Hoisting

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