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Practice how to declare JavaScript variable
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<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Declare JavaScript Variable in HTML</title> </head> <body> <h1>How to declare javascript varibable?</h1> <p>Variables in JavaScript are declared by using the var, let, or const keywords. 'const' is used to declare constants. Constant variable value cannot be reassigned or changed. </p> <p>var a = "JavaScript is ";</p> <p>let b = "a great ";</p> <p>const c = "fun.";</p> <button onclick="myFunction()">Click here to see result</button> <p id="myParagraph"></p> <!--Script tag is added to write JavaScipt code inside it--> <script> // declare variables using the var, let, or const keywords var a = "JavaScript is "; let b = "a great "; const c = "fun."; // const is used to declare constants, the value cannot be reassigned or changed. function myFunction() { document.getElementById("myParagraph").innerHTML = "a + b +c = " + a + b + c; } </script> </body> </html>
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