Displaying in Bold letters using JavaScript

Using JavaScript we can make a string bold by using bold() function. Here is an example.

var my_str="Hello world!";
The output of above string is Hello world!

Try this code below, there is an options to display in normal or bold letters by selecting radio buttons.

<title>(Type a title for your page here)</title>
<script type="text/javascript">
function makebold(type){
var my_str="Hello world!";

<body >
Display in <input type=radio name=bold value=yes onClick="makebold('bold')";>Bold
<input type=radio name=bold value=yes onClick="makebold('normal')";>Normal


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