javascript number to string

var myNumber=120;
var myString = myNumber.toString(); //converts number to string "120"var num = 15;
var n = num.toString(); /* now */ "15"if (typeof myVar === 'string'){
    //I am indeed a string
}num.toString();<script language="JavaScript" type="text/javascript"> 
var a = 3.3445;
var c = a.toString();
alert(c);
</script>
   const toNumber = str => +str;

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