Use default values in Javascript

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January 28, 2011 Javascript Nils Snippet

This cool way to use default values for javascript function parameters was provided by Nils:

<script>

function(param1) {
  param1 = param1 || "my default value";
}

</script>

Update: Fixed typo in the script above (| should have been ||), thanks Nathan for pointing that out! Took the opportunity to add an alternative way to implement below:

<script>

function(param1) {
  param1 = typeof param1 !== 'undefined' ? param1 : "my default value";
}

</script>

Use default values in Javascript

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