Question

56

Split array into two arrays

rated 0 times [ 61] [ 5] / answers: 1 / hits: 155792 / 12 Years ago, thu, march 29, 2012, 12:00:00

var arr = ['a', 'b', 'c', 'd', 'e', 'f'];

var point = 'c';

How can I split the arr into two arrays based on the point variable, like:

['a', 'b']

and

['d', 'e', 'f']

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adilene

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3 Years ago

answered 12 Years ago bryantc · Accepted Answer

var arr2 = ['a', 'b', 'c', 'd', 'e', 'f'];

arr = arr2.splice(0, arr2.indexOf('c'));

To remove 'c' from arr2:

arr2.splice(0,1);

arr contains the first two elements and arr2 contains the last three.

This makes some assumptions (like arr2 will always contain the 'point' at first assignment), so add some correctness checking for border cases as necessary.