CODEWITHSUNDEEP
javascript
epic556
epic556

Reputation: 79

Compact way to declare sequential javascript variables?

Existing code:

var e1; 
var e2; 
var e3;
var e4;
var e5;
var e6;
var e7;

Is there a way to declare the variables that is like "var e1 to var e50" ? I have to make a bunch of variables for my program and it is tiresome to have to type each one.

Thanks

Upvotes: 0

Views: 173

Answers (3)

user20091357
user20091357

Reputation:

tiresome to have to type each one

Then you need an Array, but you must count from 0 to your length - 1 in order to use it.

This

var e = ["e1", "e2", "e3", "e4", "e5", "e6", "e7"];

is the same as this

var e = [];
e[0] = "e1";
e[1] = "e2";
e[2] = "e3";
e[3] = "e4";
e[4] = "e5";
e[5] = "e6";
e[6] = "e7";

Upvotes: 0

Val
Val

Reputation: 2323

Regardless of whether it's a good idea or not, the comma operator lets you declare multiple variables without repeating 'var':

var e1, e2, e3;

you can format with whitespace:

var e1,
    e2,
    e3;

Upvotes: 1

UncleDave
UncleDave

Reputation: 7188

JS can't loop through variable creation.

You probably just want to use an array instead:

var myThings = [];

to access a value:

myThings[0]

You can also loop through this if you need to.

Upvotes: 1

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