Question

In: Computer Science

How do I make an HTML JSON button that when clicked will say Hello World!

How do I make an HTML JSON button that when clicked will say Hello World!

Solutions

Expert Solution

Code:

<!DOCTYPE html>
<html>
<head>
   <title>Welcome</title>
   <script type="text/javascript">
       //fun() is a function that stores the json array
       //It is called when the button is clicked
       function fun(){
           var myObj, x;
           //myObj is the json array which stores message as key
           //and Hello World as its value
           myObj = {
               "message":"Hello World"
           };
       //x is a variable that store the value of the key message from myObj json array      
       x = myObj['message'];
       //The below statement find the element with the id="demo"
       //and replaces its contents with that of the one store in the variable x
       document.getElementById("demo").innerHTML = x;
   }
   </script>
</head>
<body>
   <!--This button calls the function fun() when clicked -->
   <button onclick="fun()">Click Me</button>
   <!--The below is a heading tag with id="demo" it is used to print the message from json array -->
   <h1 id="demo"></h1>
</body>
</html>

Code in the image:

Output:

venereology answered 4 months ago
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