String to variables - javascript

Question

I am making a warn command of an bot (Discord Api) I learnt how to split a string . So , The example is

var str = "warn @user reason";
var res = str.split(" ", 3);

and Its output will be

warn,@user,reason

and Its output will be "warn,@user,reason" I want to make the reply come in variables like

var commandname = "warn" ;
var username = "@user"; 
var reason = "reason";

because I want to store them in a file ! How can I remove the "," of reply and get the reply as the variables ?

You can set as commandname = res[0]; username = res[1]; ... — Rajesh Dixit
– Rajesh Dixit, Commented Sep 25, 2017 at 10:50
You already has the values in a variable called res, which is even easier to save into a file than separate variables. — Teemu
– Teemu, Commented Sep 25, 2017 at 10:53
Possible duplicate of Javascript separate string into different variables — Rajesh Dixit
– Rajesh Dixit, Commented Sep 25, 2017 at 10:54

musefan · Accepted Answer · 2017-09-25 10:50:46Z

5

In your example, res will be an array of string objects. So you can access then by index:

var commandname = res[0];
var username = res[1]; 
var reason = res[2];

answered Sep 25, 2017 at 10:50

musefan

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3 Comments

Rajesh Dixit Over a year ago

Should we really answer such basic questions?

musefan Over a year ago

Yep. As long as the question meets all the requirements (effort, clear, etc.) then it doesn't matter how 'simple' you or anyone else thinks it is. Only thing I didn't think of, maybe it's a duplicate already...

Adelin Over a year ago

I agree with musefan, simple is relative

Jigar Shah · Accepted Answer · 2017-09-25 11:06:18Z

3

You can simplify var declaration like , for further details about Destructuring assignment

var str = "warn @user reason";
var res = str.split(" ", 3);
var [commandname,username,reason ] = res;
console.log(commandname);
console.log(username);
console.log(reason);

Note: It depends upon ES version and do not support by IE

edited Sep 25, 2017 at 11:06

answered Sep 25, 2017 at 10:55

Jigar Shah

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5 Comments

Adelin Over a year ago

Depends on the ES version

musefan Over a year ago

Never knew that, it's good to learn... though I doubt I would use it anytime soon. Doesn't seem like much of a time saver for the risk of compatibility

Keith Over a year ago

Unless specified, it's about time we put ES5 were it belongs, (in the bin).. If the OP specifically asks for ES5, fair enough. But come on..!! As a default javascript questions ES6 should be the norm..

Adelin Over a year ago

@musefan It's called destructuring

Jigar Shah Over a year ago

yes, added link for Destructuring assignment in answer and note as well

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