Javascript Functions and default parameters, not working in IE and Chrome

Question

I created a function like this:

function saveItem(andClose = false) {

}

It works fine in Firefox

In IE it gives this error on the

Answer 1

In your case, you have an other alternative to be sure that your variable is a boolean:

function saveItem(andClose) {
  var andClose = true == andClose;
  // ...
}

Default value is undefined, and true == undefined => false, so your default value will be false :)