How to concatenate string with a variable in the variable in js

Question

I want to have the variable, which name will be contacted var and string

function(name){
  var name + "string" = ...
}

So you want to use the concatenated string as the *variable name*? Don't do that. Use an array or object instead. — Bergi, Nov 07 '15 at 14:09
plenty of dupes out there if I can find one. Bracket notation is what you need. — epascarello, Nov 07 '15 at 14:09
``${ variable name } some text for concat`` - es6 or `variable name + "some text for concat"` - es5 — Smile0ff, Nov 07 '15 at 14:11

score 0 · Accepted Answer · answered Nov 07 '15 at 14:22

You should use bracket notation and insert variables inside an object.

Something like this:

var createName = function(name, container){
  container[name + "String"] = 'He is Beautiful, I love him. <3';
  return container;
}

If you call

createName('Rodmentou', names);
console.log(names[RodmentouString]);

You will receive, as output:

He is Beautiful, I love him. <3

score -2 · Answer 2 · answered Nov 07 '15 at 14:16

Your question is not clear and does not make sense to programmer. Anyway, to concatenate a string with another string you can use concat function.

var str1 = "Hello ";
var str2 = "world!";
var res = str1.concat(str2); // 'Helloworld'
 or
var res = str1.concat('world'); // 'Helloworld'

or you can use '+' operator :

 var str1 = "Hello ";
    var str2 = "world!";
   var str = str1 + str2; // 'Helloworld'
   var str = 'Hello'+'world'; // 'Helloworld'

http://codepaste.net/czmcvn – Kondrad Skrzyński Nov 07 '15 at 15:01 — Kondrad Skrzyński, Nov 07 '15 at 15:01

2 Answers2