How To Set Default Parameter On Javascript

Andrianto Handoko

Javascript, Programming

Monday, January 9, 2017

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Hello, we are all developer know what default parameter is. And default parameter is very important to us to save our line. As web developer, we sometime we need to adjust our code so it acceptable on many browser. If our code work on chrome, maybe it won't work on mozilla, vice versa.

One thing we need to aware of is default parameter. Mozilla won't accept default parameter like this:

function test(param = "default") {}

So we need to adjust it to code that can be "rendered" by the browser. And the code is:

function test(param) {
  param = (typeof param == 'undefined' ? {your default value} : param );
}

Just only do that on our first on function will remove the default parameter error. 😊