How To Use Callback Function Using JavaScript?
Nov 18, 2021 . Admin
Hello Friends,
Now let's see example of how to use callback function example.We will check how to use callback function. This is a short guide on use callback function in javascript. Here you will learn how to use javascript callback function. Let's get started with how to use callback function in javascript.
Here i will give you many example how to use callback function using javascript.
Example : 1<html> <head> <title>How To Use Callback Function Using JavaScript? - MyWebtuts.com</title> </head> <body> <h3>How To Use Callback Function Using JavaScript? - MyWebtuts.com</h3> <p> The getData() function is called its arguments and the callback is executed after the completion of getData() function. </p> <script> function gData(a, b, callback){ document.write(" The multiplication of the numbers " + a + " and " + b + " is : " + (a*b) + "<br><br>" ); callback(); } function sData(){ document.write(' This is the showData() method execute after the completion of getData() method.'); } gData(25, 5, sData); </script> </body> </html>Output :
The getData() function is called its arguments and the callback is executed after the completion of getData() function. The multiplication of the numbers 25 and 5 is : 125 This is the showData() method execute after the completion of getData() method.Example : 2
<html> <head> <title>How To Use Callback Function Using JavaScript? - MyWebtuts.com</title> </head> <body> <h3>How To Use Callback Function Using JavaScript? - MyWebtuts.com</h3> <h2> This is the MyWebtuts.com </h2> <script> function sData(nm, amt) { alert(' Hello ' + nm + '\n Your entered amount is ' + amt); } function gData(callback) { var nm = prompt(" Welcome to the MyWebtuts.com \n What is your name?"); var amt = prompt(" Enter some amount..."); callback(nm, amt); } gData(sData); </script> </body> </html>Output :
Welcome to the MyWebtuts.com What is your name? abc Enter some amount... 25000 Hello abc Your entered amount is 25000
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