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How to return a value from a JavaScript function?
To return a value from a JavaScript function, use the return statement in JavaScript. You need to run the following code to learn how to return a value −
Example
<html> <head> <script> function concatenate(name, age) { var val; val = name + age; return val; } function DisplayFunction() { var result; result = concatenate('John ', 20) ; document.write (result ); } </script> </head> <body> <p>Click the following button to call the function</p> <form> <input type = "button" onclick = "DisplayFunction()" value = "Result"> </form> </body> </html>
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