You can concatenate a number to a string using the
+ operator as shown below.
let example = 'Hello World'; let demo = example + 42; // 'Hello World42' let reverse = 42 + example; // '42Hello World'
You can also use the
String#concat() function, but using the
+ operator is less error prone in case
str isn't a string.
let example = 'Hello World'; example.concat(42); // 'Hello World42' example = null; null.concat(42); // Throws a TypeError
Note: If you are simply printing variables to the console, you do not need to concatenate.
console.log() and pass each value you want to print as an argument:
let example = 'Hello World'; console.log(example, 42); // Prints "Hello World 42", 42 is highlighted as a number
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