var msg="Welcome to ExpertRating"
var ind= msg.substr(3, 3)

<script type="text/javascript">   
 x=4+"4";
 document.write(x); 
</script>

<script type="text/javascript">  
  var text = "This is a text";  
  var result = text.split(" "); 
   document.write(result); 
</script>

<script type="text/javascript">   
 var s= "Good 100%";  
 var pattern = /\D/g;   
 var output= s.match(pattern);  
 document.write(output); 
</script>

<script type="text/javascript">   
var text="This is a text";   
alert(text.charAt(text.length-1));
 </script>

<script type="text/javascript">   
document.write(2+5+"8"); 
</script>

<script type="text/javascript">

  document.write(parseFloat(9+10));

</script>

<script type="text/javascript">    
var str=((45%2)==0)?"hello":"bye";  
 document.write(str); 
</script>

<script type="text/javascript">
   var cst = "Web Presence Solutions & Implementation";
   var pattern = new RegExp("Implementation","i");
   document.write(cst.match(pattern));
</script>

<script type="text/javascript">

function sum(x){
   function add(y){
     return x+y;
   }
   return add;
}

function callme(){
  result=sum(5)(5);
  alert(result);
}

callme();

</script>