JAVASCRIPT

CONCATENATION IN JAVASCRIPT

Concatenation refers to the process of adding strings together. In javascript, strings are added together with the + sign which is referred to as the string operator.

You use this operator to add strings to variables or variables to variables.

Example: Add Strings And variables

var firstName="John";

alert("Hello" + firstName);

HelloJohn is then outputted.

Notice that there is no space between Hello and John. To add a space between these words, add a space after Hello like below (ie move the quotation mark one space right):

alert("Hello " + firstName);

Example: Add Variables And variables

var firstName="John";
var lastName="Smith";

alert(firstName + lastName);

JohnSmith is then outputted. To add a space between John and Smith, do:

alert(firstName + " " + lastName);