[JohnCCole]

Recently I had an un-expected behaviour happen. I had created a custom module using the define statement which was then used in a client side script. Below is simplified version of the custom module.

Code:
define([],
function() {
validateDate=function(dt){
return dt.getMonth()==0;//Just for illustration purposes we’re in January
};
return {
isJanuary: function(dt){
return this.validateDate(dt);
}
};
});
The validateDate function was defined incorrectly. it should have been

Code:
function validateDate
what really surprised me was that validateDate = function() .. actually overwrote or broke a NetSuite global client side function of the same name. So while I won’t make this mistake again, how did expression validateDate = function(dt)… in my custom module cause this?

John
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[erictgrubaugh]

Because there is no `var` keyword in front of `validateDate` when you first define it, you have effectively defined `validateDate` as a global. As soon as you include this module, it will define `validateDate` in the global space, and thus will overwrite any previously defined `validateDate` reference.

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