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Home/ Questions/Q 560627
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Editorial Team
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Editorial Team
Asked: May 13, 20262026-05-13T12:21:49+00:00 2026-05-13T12:21:49+00:00

Why is JavaScript returning the wrong array length? var myarray = [‘0′,’1’]; delete myarray[0];

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Why is JavaScript returning the wrong array length?

var myarray = ['0','1'];
delete myarray[0];
alert(myarray.length); //gives you 2
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  1. Editorial Team
    Editorial Team
    2026-05-13T12:21:49+00:00Added an answer on May 13, 2026 at 12:21 pm

    The “delete” doesn’t modify the array, but the elements in the array:

     # x = [0,1];
     # delete x[0]
     # x
     [undefined, 1]
    

    What you need is array.splice

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