javascript number to string

if (typeof myVar === 'string'){
    //I am indeed a string
}

var myNumber=120;
var myString = myNumber.toString(); //converts number to string "120"

var colors = ["red", "blue", "green"];
if(colors.indexOf("blue") !== -1){
	//colors contains the string "blue"
}else{
	//colors does not contain the string "blue"
}

var myNumber=120;
var myString = myNumber.toString(); //converts number to string "120"

<script language="JavaScript" type="text/javascript"> 
var a = 3.3445;
var c = a.toString();
alert(c);
</script>
   

 num.toString()

var number = 1212
var numberString = number.toString();//converts my number that is '1212' to a string

var number = 12;
return numner.toString();

    var num=213; 
    document.write("Output : " + num.toString());   // convert to integer string        
    document.write("Output : " + num.toString(2));   // convert to binary string       

const num = 123; //> type number 123
const str = num.toString(); //> type string "123"

//You can call .toString() on every defined variable.

var x1 = Boolean(0); x1.toString(); // --> false
var x2 = Boolean(1); x2.toString(); // --> true
var x3 = new Date("2020/03/13"); x3.toString(); // --> Fri Mar 13 2020 00:00:00 GMT+0100
var x4 = "12345"; x4.toString(); // --> 12345
var x5 = 12345; x5.toString(); // --> 12345

const toNumber = str => +str;

// Example
toNumber('42');     // 42