javascript - Are these for loops different? -

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here code

example 1

for (var k = 0, l = value.length; k < l; k++, index++) {     // ... }

example 2

var l = value.length; (var k = 0; k < l; k++, index++) {     // ... }

in example 1, variable l defined inside of 'for' brackets, mean l being defined every time loop goes through? if example 2 more efficient right?

they equal in speed. nothing different.

but recommand use example 2 because better read.


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