How to print/display an array in jquery

Question

I have an array

var arr = [1,2,3,4,5,6,7,8,9,10];

How to display all items of the array using an alert box?

I have tried : alert(arr); and it shows nothing.

Edit: I want display this array like php print_r function.

 output needed like: array["key" => "value", "key" => "value", ...];

If you're just trying to debug, I would HIGHLY suggest ditching alert and using console.log() — flcoder
– flcoder, Commented Sep 9, 2015 at 6:51
@flcoder: I'm indeed wondering why console.log() hasn't been suggested from the very beginning. — D4V1D
– D4V1D, Commented Sep 9, 2015 at 6:54
thanks to all... its working but by using this: alert(arr.toString()); alert(arr.join(", ")); .... explain ? — Deepak
– Deepak, Commented Sep 9, 2015 at 7:01

Satpal · Accepted Answer · 2015-09-09 06:46:51Z

4

You could also use the JavaScript function toString().

alert(arr.toString());

edited Sep 9, 2015 at 6:46

Satpal

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answered Sep 9, 2015 at 6:45

Holonaut

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1 Comment

Holonaut Over a year ago

Also, instead of alert(), I used console.log() in my answer, but it got removed by an editor. Console.log prints to your js console (usually accessed by pressing ctrl+shift+J in your browser)

Milind Anantwar · Accepted Answer · 2015-09-09 06:42:59Z

3

To show them in csv, you can use .join(",") along with array object:

alert(arr.join(", "));

for printing individually:

$.each(arr, function( index, value ) {
  alert( value );
})

answered Sep 9, 2015 at 6:42

Milind Anantwar

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Comments

D4V1D · Accepted Answer · 2015-09-09 06:57:42Z

2

As I'm wondering why console.log() hasn't been provided as an answer, here it is.

Do:

console.log(arr);

And open the developper toolbar (F12 on most browsers) and go to the console tab. You should be able to see and expand your array.

answered Sep 9, 2015 at 6:57

D4V1D

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1 Comment

D4V1D Over a year ago

Nevermind, just saw the requirement in OP's question ("How to display all item of array by alert box ?"). I'll leave my answer though (the OP might not be aware at all of this feature).

guradio · Accepted Answer · 2015-09-09 06:50:05Z

1

var arr = [1,2,3,4,5,6,7,8,9,10];
alert(arr);
for(var i = 0 ; i < arr.length; i++){
alert("key "+ i + " and " + "Value is "+arr[i]);
}

FIDDLE

To alert each value use this

edited Sep 9, 2015 at 6:50

answered Sep 9, 2015 at 6:44

guradio

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Comments

Persijn · Accepted Answer · 2015-09-09 06:58:18Z

1

var a = {
  "1": 15,
  "2": 16,
  "3": 17,
}

console.log(a);

answered Sep 9, 2015 at 6:58

Persijn

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Comments

webCoder · Accepted Answer · 2015-09-09 07:14:52Z

0

    var arr = [1,2,3,4,5,6,7,8,9,10];
    var arrstr="arr[";
    for(var i=0;i<arr.length;i++){
        arrstr+="\""+i+"\" : \""+arr[i]+"\"";   //you can change ":" for "=>", if you like
        if(i!=arr.length-1){//if not the last one ,add "," 
            arrstr+=",";    
        }else{
            arrstr+="]";
        }
    }

    alert(arrstr);

answered Sep 9, 2015 at 7:14

webCoder

1

Comments

jmoerdyk · Accepted Answer · 2023-03-02 16:17:52Z

-1

for(var i = 0; i < teams.length; i++) {
        console.log(teams[i]);
           
}

worked for me.

edited Mar 2, 2023 at 16:17

jmoerdyk

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answered Mar 2, 2023 at 15:27

Merin Antony

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2 Comments

jmoerdyk Over a year ago

Not sure if this is a "thanks" or an attempt at an answer. It doesn't actually answer the original problem, as it doesn't use alert() or provide the format that the OP asked for.

Michael M. Over a year ago

@jmoerdyk Looks legit (however, not particularly good) to me. I think the usage of console.log() comes from this comment on the question.

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