Jquery/Js Variable Plus Variable Output Text

Question

I'm looking for a way to read a variable txt from other variables that are basically from a counter of such.

example:

var txt0 = "this is txt 0"
var txt1 = "this is txt 1"
var txt2 = "this is txt 2"

counter = 0 // 1,2 or 3 etc
var a = (var+counter);  // this line output : var0;or var3 etc
$(h1').text(a);
console.log(a);
//answer I want is : this is text 0 or 1 or 2;

I tried to create a basic sample to demonstrate my issue, I need to use this format as a lot of the other code is dependent on the dynamic of counters various checks for other content

Why don't you store them inside of an array?

Kilian Stinson
– Kilian Stinson

2017-01-10 12:43:42 +00:00
Commented Jan 10, 2017 at 12:43 — Kilian Stinson
– Kilian Stinson, Commented Jan 10, 2017 at 12:43

Arkej · Accepted Answer · 2017-01-10 12:51:06Z

2

You cad do it with this code: var a = window['txt'+counter];

var txt0 = "this is txt 0"
var txt1 = "this is txt 1"
var txt2 = "this is txt 2"

counter = 0; // 1,2 or 3 etc
var a = window['txt'+counter];
$('h1').text(a);
console.log(a);

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<h1></h1>

But of course using array or JSON object will be more efficient

answered Jan 10, 2017 at 12:51

Arkej

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5 Comments

Careen Over a year ago

For some reason only worked once I removed the vars for each TXT. Thanks for putting it in a simple form for me to relate.

Sanjay Nishad Over a year ago

did I post something else? :D

Arkej Over a year ago

@Sanjay Nishad your code doesn't seem to work: jsfiddle ;P

Sanjay Nishad Over a year ago

if my code doesn't work, how is working yours? both are same :D btw window['txt'+counter] is not working with jsFiddle, doesn't matters mine or yours :)

Arkej Over a year ago

They aren't the same: window['txt'+counter] vs window["var"+counter] - jsfiddle ^^

Sanjay Nishad · Accepted Answer · 2017-01-10 12:48:39Z

1

you can access using window

var a = window["var"+counter];  // this line output : var0;or var3 etc

but you should use an array or JOSN object

var obj = {txt0 :"this is txt 0", txt1: "this is txt 1", txt2 = "this is txt 2"}

and access like

obj["var"+counter]

edited Jan 10, 2017 at 12:48

answered Jan 10, 2017 at 12:44

Sanjay Nishad

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Comments

ValLeNain · Accepted Answer · 2017-01-10 12:48:58Z

0

var txt = ["this is text 0", "this is text 1", "this is text 2"];

var counter = 0;
/* You should make sure counter is within [0; txt.length - 1 ] */
$('h1').text(txt[counter]);

answered Jan 10, 2017 at 12:48

ValLeNain

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