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in Technique[技术] by (71.8m points)

standards - Check if falsy except zero in JavaScript

I am checking if a value is not falsy with

if (value) {
  ..
}

but I do want to accept zeros as a (non-falsy) value. How is this normally done? Would it be

if (value || value === 0) {
  ..
}

or what?

question from:https://stackoverflow.com/questions/31626876/check-if-falsy-except-zero-in-javascript

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by (71.8m points)
if (value || value === 0) {
  ..
}

is cleaner way, no problem.

Just for fun try this

val = 0;
if(val){
console.log(val)
}
//outputs 0   **update - it used to be.. but now it seems it doesnt in chrome

And

var val = 0;
if(val){
console.log(val)
}
//outputs nothing

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