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Can anyone tell what is problem in the following code... when i run the program in browser a blank white screen appears... I don't know why its not working... I am not very sure with the syntax...
I don't want to invoke the function by any events.. i just want to write a function and invoke it by a manual call... 

 <html>
 <head>
 <script language="javascript" type="text/javascript">
 function salin()
 {
 var sal = prompt("Enter your current salary - ","");
 var in = prompt("Enter the increment % - ","");
 sal = parseInt(sal);
 in = parseInt(in);
 var nsal = sal +( sal*(in /100));
 alert("Your new salary is - " + nsal);
 }
 salin();
 </script>
 </head>
 <body>
 </body>
 </html>
Yeldar Kurmangaliyev
34.4k13 gold badges64 silver badges104 bronze badges
asked Jul 12, 2017 at 5:05
6
  • Do you see any error in console.? Commented Jul 12, 2017 at 5:06
  • no... i don't see any error Commented Jul 12, 2017 at 5:07
  • 2
    You must be getting error: "message": "Uncaught SyntaxError: Unexpected token in", Commented Jul 12, 2017 at 5:09
  • in is reserved keyword in java-script so, your variable name cannot be in Commented Jul 12, 2017 at 5:09
  • @trex1999 Where exactly are you looking? In Firefox you get SyntaxError: missing variable name. Commented Jul 12, 2017 at 5:23

4 Answers 4

5

The issue seems to be in this line in = parseInt(in);

in is a reserved keyword in javascript which is use to return a boolean value. Replace it with a different variable name

answered Jul 12, 2017 at 5:07
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Comments

3

I have created this fiddle..

Its working. You were using reserved javascript keyword

function salin()
 {
 var sal = prompt("Enter your current salary - ","");
 var values = prompt("Enter the increment % - ","");
 sal = parseInt(sal);
 values = parseInt(values);
 var nsal = sal +( sal*(values /100));
 alert("Your new salary is - " + nsal);
 }
 salin();

https://jsfiddle.net/abdur_rehman26/7L9uvxon/

answered Jul 12, 2017 at 5:36

Comments

0

Try this instead:

function salin()
 {
 var sal = prompt("Enter your current salary - ","");
 var income = prompt("Enter the increment % - ","");
 sal = parseInt(sal);
 income = parseInt(income);
 var nsal = sal +( sal*(income /100));
 return "Your new salary is - " + nsal;
 }
 alert(salin());

Notice I added return and put the alert() on the function call. I also changed "in" to "income"

answered Jul 12, 2017 at 5:10

1 Comment

Good answers don’t just dump "working" code. Good answers explain the OP’s mistake or how to approach the problem.
0

'in' is a reserved keyword. change that to some other variable name

 <body>
 <script language="javascript" type="text/javascript">
 function salin()
 {
 var sal = prompt("Enter your current salary - ","");
 var in1 = prompt("Enter the increment % - ","");
 sal = parseInt(sal);
 in1 = parseInt(in1);
 var nsal = sal +( sal*(in1 /100));
 alert("Your new salary is - " + nsal);
 }
 salin();
 </script>
</body>
answered Jul 12, 2017 at 5:17

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