The new optional parameter for ES6 only cares about undefined.
undefined
function myFunc(a, b = 0) { console.log(a,b); } myFunc(1); // 1 0 myFunc(1,null); // 1 null myFunc(1,undefined); // 1 0 myFunc(1,getSomeNonExistingValue()); // 1 (null or 0)
Wouldn't it be simpler to use undefined instead of null everywhere? Just stop using null?
null
Yeah, this has tripped me a couple of times...
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The new optional parameter for ES6 only cares about
undefined.Wouldn't it be simpler to use
undefinedinstead ofnulleverywhere? Just stop usingnull?Yeah, this has tripped me a couple of times...