JAVASCRIPT

javascript is number an integer

Number.isInteger(value)

//returns a Boolean

js is number

Number.isInteger(value)

javascript is int

let testString="5";

if(Number.isInteger(parseFloat(testString))){
 console.log("we are a int of some sort");                             
}    

js is variable int

// The === operator is used for checking
// the value and the type of a variable

var data = 1;

if (data === parseInt(data, 10))
    alert("data is integer")
else
    alert("data is not an integer")