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Must you define a data type when declaring a variable in JavaScript?
In JavaScript, variables are defined using the var keyword followed by the variable name. Before you use a variable in a JavaScript program, you must declare it. Variables are declared with the var keyword as follows.
var rank;
A data type isn’t needed in JavaScript. Variables in JavaScript are not handled like other strong typed language C++, Java, etc.
Storing a value in a variable is called variable initialization. You can do variable initialization at the time of variable creation or at a later point in time when you need that variable.
<script> var name = "Amit"; var rank = 2; </script>
Updated on: 03-Jan-2020
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