CODEWITHSUNDEEP
javascriptif-statementconditional-statements
Amol Pujari
Amol Pujari

Reputation: 2349

access last if-statement-condition result value

var check = someCheck();
if (check){
  doOne(check);
}else{
  doTwo();
}

Can I be able to write the same code without defining check var? something like this below

if (someCheck()){
  doOne(<magic-value-passed-which-is-result-of_someCheck()>);
}else{
  doTwo();
}

Note that check could be a true, or any object or null or undefined, what all a function call could return.

I am thinking of the following solution as

var condition;
function setCondition(stmt){
  condition = stmt;
}

if ( setCondition(someCheck()) ){
  doOne(condition)
}else{
  doTwo();
}

still am not much happy with this one, as setCondition is a lengthy name, wanna write simple and less code. Can we teak if itself or similar like any idea where could we access last if checked value? is if a function here?

Upvotes: 0

Views: 90

Answers (2)

Kirill Bulygin
Kirill Bulygin

Reputation: 3826

Yes, something similar is possible indeed in C-like languages (such as JavaScript):

if (check = someCheck()) { ... } // 'check' should be already defined

Upvotes: 2

Nina Scholz
Nina Scholz

Reputation: 386560

You could wrap the part in an IIFE.

ES6

(v => v ? doOne(v) : doTwo())(someCheck());

ES5

void function (v) { v ? doOne(v) : doTwo(); }(someCheck());

Upvotes: 2

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