concatenate string and variable js code example
Example 1: how to concatenate strings javascript
var str1 = "Hello ";
var str2 = "world!";
var res = str1.concat(str2);
// does not change the existing strings, but
// returns a new string containing the text
// of the joined strings.
Example 2: how to concatenate strings and variables in javascript
const helloName = name => `Hello ${name}!`
Example 3: concantene number in js
Use "" + 5 + 6 to force it to strings.
This works with numerical variables too:
var a = 5;
var b = 6;
console.log("" + a + b);