does array.shift() delete the array?

Question

i have an array that has one element and i want to use proarray.shift();

var proarray=[];
proarray[0]=1;
//...
proarray.shift();
//...
proarray[i]=5;

but when i do, it stops the program. does it delete the array? if it does, what should i do to prevent that? cuz i need that array for later.

and also i tried to use

var proarray=[];
    proarray[0]=1;
    //...
    array.splice(0,1);
    //...
    proarray[i]=5;

but it didn't work.

what should i do?

Wade Anderson · Accepted Answer · 2014-12-06 19:26:37Z

1

From the docs.

The shift method removes the element at the zeroeth index and shifts the values at consecutive indexes down, then returns the removed value. If the length property is 0, undefined is returned.

The program is likely stopping because you are accessing an index in the array that no longer exists.

answered Dec 6, 2014 at 19:26

Wade Anderson

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Wade Anderson Over a year ago

@ali sorkhi Acceptable as the answer?

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