JSLint says new keyword is missing

Question

Let's say I have some JavaScript that looks like this:

function A() {

  var MyVar, SomeParameter;

  // do work

  MyVar = FunctionB(SomeParameter);

}

JsLint says I'm Missing 'new'. at the line MyVar = FunctionB(SomeParameter);

Why should I rewrite as MyVar = new FunctionB(SomeParameter); Is there going to be any benefit?

score 9 · Accepted Answer · answered Mar 10 '12 at 21:39

9

It is the convention that constructors (eg: Array, Object) are starting with a capital.

JSLint complains, because it thinks that you're trying to use a constructor, without new keyword. To fix the problem, start your function with a non-uppercase character.

answered Mar 10 '12 at 21:39

Rob W

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Ok, so it's purely semantical then. Thanks Rob! – frenchie Mar 10 '12 at 21:42
5

semantical yes, but I should point out that's a convention widely used ^^ – pomeh Mar 10 '12 at 21:50

score 5 · Answer 2 · answered Mar 10 '12 at 21:39

5

JSLint thinks the function is a constructor since it's uppercase. Name your non-constructor functions with an initial lowercase letter and JSLint will stop complaining.

answered Mar 10 '12 at 21:39

Dagg Nabbit

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JSLint says new keyword is missing

2 Answers2

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