Question

173

Javascript shift versus splice - are these statements equal?

rated 0 times [ 179] [ 6] / answers: 1 / hits: 16428 / 12 Years ago, thu, may 24, 2012, 12:00:00

I just want to confirm if the following two Javascript statements produces the same results, as it seems to me:

First:

var element = my_array.splice(0,1)[0];

Second:

var element = my_array.shift();

I want to substitute the first by the second, in my own code, to improve readability. Can I do this?

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1 Year ago

answered 12 Years ago isaacvalentinn · Accepted Answer

They will have the same effect, yes. splice(0, 1) will remove the first element from my_array and return a new array containing that element. shift will do the same, but return the element itself, not an array.

shift is more readable (in my opinion) and is also significantly faster (in Chrome at least):

enter