Insert contents into Array Javascript

Question

I have an empty array and I want to insert content in that.

This the code that I use:

document.addEventListener('keypress', function(e) {

    var myArr = [];
    var newContent = myArr.push(e.keyCode);
    console.log(myArr);

});

When I press the keyboard, I want to store all keyCode pressed into one Array without deleting the existing values of that Array. Currently, it stores one value of the first press and when I press again, it replaces this value with a new one.

I want to have this form: ["value 1", "value 2", "value 3", ...], but what I get is ["value 1"]...["new value"] etc...

What am I doing wrong here?

Praveen · Accepted Answer · 2013-12-17 12:40:27Z

4

Declare the array myArr outside the scope because each time when you do a keypress, myArr variable is getting initialized.

var myArr = [];
document.addEventListener('keypress', function(e) {
    var newContent = myArr.push(e.keyCode);
    console.log(myArr);

});

Check this JSFiddle

edited Dec 17, 2013 at 12:40

answered Dec 17, 2013 at 12:35

Praveen

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Comments

Rahul Sahu · Accepted Answer · 2013-12-17 12:36:50Z

0

You are declaring your array i.e. var myArr. So every time it is creating new array. So declare outside of current block.

answered Dec 17, 2013 at 12:36

Rahul Sahu

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