javascript validate number code example
Example 1: integer check in javascript
var a=Number.isInteger(5);
var b= Number.isInteger(01);
var c=Number.isInteger("10");
console.log(a,b,c);
Example 2: check if input is a number javascript
if (typeof(val) === 'number') {
}
Example 3: javascript check if a value is an int
Number.isInteger(2);
Number.isInteger(90);
Number.isInteger("37");
Number.isInteger(false);
Example 4: javascript check if variable is number
function isNumber(n) {
return !isNaN(parseFloat(n)) && !isNaN(n - 0);
}
Example 5: 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.
Example 6: validatorjs number
const validationRule = 'required|numeric';