Pass the variable of one function into document.write - Javascript

Question

This is my code:

<!DOCTYPE html>
<html>
  <head>
    <link rel="stylesheet" href="style.css">
    <script src="script.js"></script>
  </head>
  <body>
    <p>
     <script>
        document.write(smsCount)  // i want to get "1" 
       </script>
    </p>
  </body>
</html>

My script.js:

function sameer()  {
    console.log('function working');
    var smsCount = 1;
  }

sameer();

How to access variable which is located in my function name sameer.

make it window.smsCount = 1;

gurvinder372
– gurvinder372

2018-03-08 09:20:05 +00:00
Commented Mar 8, 2018 at 9:20 — gurvinder372
– gurvinder372, Commented Mar 8, 2018 at 9:20

Ankit Agarwal · Accepted Answer · 2018-03-08 09:22:40Z

2

Declare smsCount outside the function in a global scope to get it accessed using document.write:

var smsCount;
function sameer()  {
    console.log('function working');
    smsCount = 1;
  }

sameer(); 

document.write(smsCount);

answered Mar 8, 2018 at 9:22

Ankit Agarwal

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Comments

gurvinder372 · Accepted Answer · 2018-03-08 09:30:02Z

1

How to access variable which is located in my function name sameer.

You can't since visibility of sameer is limited to inside the function in which its declaration is.

Either make it visible to window (topmost level)

window.smsCount = 1;

Or, don't associate any var, let or const with it, its scope will keep propagating to the parent level till it is declared or it will be added to global scope

smsCount = 1;

Or return the value

function sameer()  {
    console.log('function working');
    var smsCount = 1;
    return smsCount;
  }

var smsCount = sameer();

answered Mar 8, 2018 at 9:30

gurvinder372

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7 Comments

Sameer Over a year ago

how to make work this in inside one html file that means two <script tags> instead of separated script.js file?

gurvinder372 Over a year ago

This should work for both scenarios two <script tags> or separated script.js file.

Sameer Over a year ago

can you make any fiddle? please its not working for me!

gurvinder372 Over a year ago

Can you be more specific about the error you get and what you tried?

Sameer Over a year ago

instead of using script.js if i put this in function code inside new script tag inside my html, its showing undefined!

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