how to convert variable to string in jquery

1value.toString()
2String(value)
3value + ""

1var $elem = $('<a href="#">Some element</a>');
2console.log("HTML is: " + $elem.get(0).outerHTML);

1function myFunction() {
2    var y = document.getElementById("txt1").value;
3    var z = document.getElementById("txt2").value;
4    var x = parseInt(y) + parseInt(z);
5   // document.getElementById("demo").innerHTML = x;
6  document.getElementById("txt3").value= x;
7  var elem = document.querySelector('#txt3');
8
9  if(x < 50)
10// Set color to purple
11elem.style.color = 'red';
12 else
13     // Set color to purple
14elem.style.color = 'green';
15  }
16
17