Concatenating two Strings with +=

Swarnali Roy - Jul 21 '21 - - Dev Community

We can easily append variables to a string using the plus equals (+=) operator.

let adjective = "really fun!!";
let str = "Learning basic JavaScript is ";
console.log(str += adjective);
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The console will show the output:

Learning basic JavaScript is really fun!!
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. . . . . . . . . . . . . . . . . . . . . .