10

Is it possible to creat an object literal on the fly? Like this: 

var arr = [ 'one', 'two', 'three' ]; 

var literal = {}; 

for(var i=0;i<arr.length;i++)
{
   // some literal push method here! 

  /*  literal = {
        one : "", 
        two : "",
        three : ""
    }  */ 
}

Thus I want the result to be like this: 

 literal = {
        one : "", 
        two : "",
        three : ""
    }
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3 Answers 3

Reset to default
20 
for ( var i = 0, l = arr.length; i < l; ++i ) {
    literal[arr[i]] = "something";
}

I also took the liberty of optimising your loop :)

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3 Comments

Even more compact would be for(var i in arr) { literal[arr[i]] = ''; } :)
@Tatu, you shouldn't loop through arrays using the for..in construct.
Better would be var i = arr.length; while (i--) { literal[arr[i]] = "something" }
4

Use this in your loop:

literal[arr[i]] = "";
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Comments

0

You can use for...of for the sake of simplicity:

for (const key of arr) {
   literal[key] = "";
}
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2 Comments

Shouldn't it be let key?
@marko You can use const instead of let, if you don't reassign the variable inside the block, but this is not the case here, just accessing its value directly.

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