Define dynamic typing in JavaScript
Javascript Dynamic Typing
JavaScript is a dynamically data typed language, this means that type checking is done at runtime rather than compile time.
Dynamic Typing means that, define a data-type of a variable does't need to be specified, any variable can be used to hold any/different data types. They can easily change from one data type to another data type.
For instance : Ruby, Python, JavaScript etc.
Let's see an example of Dynamic Typing in JavaScript :
➤ Example :
In this example, the variable myName change from string to number and then boolean.
<script> let myName = 'Ankaj Gupta'; //Ankaj Gupta myName = 100; //100 myName = true; //true </script>
Example explained :
In this example, the variable myName, defined as a variable by the let keyword, can be assigned to hold different data types, or can be initialized.
Each of the variables myName above can be set to any data type available in JavaScript. They do not need to be explicitly declared with a data type before they are used.