how to check if number value has decimal or not in typescript code example

Example 1: js check if number has decimals

num % 1 != 0

Example 2: check to see if number is a decimal javascript

The Number. isInteger() method determines whether a 
value an integer. 
This method returns true if the value is of the type 
Number, and an integer (a number without decimals). 
Otherwise it returns false.