Function of Javascript 5/8

Javascript:

JavaScript is the programming language of HTML and the Web. Here some codes of javascript Function.

How to Run the code:

1:Open the Notepad or Notepad++ or any software

2: Copy any code and paste

3: And save with anyname.html e.g "Cmpfun.html"

4: Open that file in any browser

Name	Code
Call a function	<!DOCTYPE html> <html> <head> <script> function myFunction() { alert("Hello World!"); } </script> </head> <body> <button onClick="myFunction()">Try it</button> <p> By clicking the button above, a function will be called. The function will alert a message.</p> </body> </html>
Function with an argument	<!DOCTYPE html> <html> <body> <p> Click the button to call a function with arguments</p> <button onClick="myFunction('Harry Potter','Wizard')">Try it</button> <script> function myFunction(name,job) { alert("Welcome " + name + ", the " + job); } </script> </body> </html>
Function with an argument 2	<!DOCTYPE html> <html> <head> <script> function myfunction(txt) { alert(txt); } </script> </head> <body> <form> <input type="button" onclick="myfunction('Good Morning!')" value="In the Morning"> <input type="button" onclick="myfunction('Good Evening!')" value="In the Evening"> </form> <p> When you click on one of the buttons, a function will be called. The function will alert the argument that is passed to it. </p> </body> </html>
Function that returns a value	<!DOCTYPE html> <html> <head> <script> function myFunction() { return ("Hello world!"); } </script> </head> <body> <script> document.write(myFunction()) </script> </body> </html>
Function with arguments, that returns a value	<!DOCTYPE html> <html> <body> <p> This example calls a function which perfoms a calculation, and returns the result:</p> <p id="demo"> </p> <script> function myFunction(a,b) { return a*b; } document.getElementById("demo").innerHTML=myFunction(4,3); </script> </body> </html>

Function of Javascript 5/8

Javascript:

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