HTML-Basic-Programs/stringoperations.html at main · SaileePhal/HTML-Basic-Programs · GitHub

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<!DOCTYPE html>
<html>
    <body>
        <p id="demo"></p>
        <script>
            const str1="double";
            const str2="trouble";
            document.writeln("converting "+str1+" to  uppercase : ");
            document.writeln(str1.toUpperCase()+"<br>");
            document.writeln("converting "+str2+" to  uppercase : ");
            document.writeln(str2.toUpperCase()+"<br>");
            document.writeln("concatenate "+str1+" and "+str2+" : ");
            document.writeln(str1.concat(str2)+"<br>");
            document.writeln("character in string  "+str1+" at index position 3 is : "+str1.charAt(3)+"<br>");
            document.writeln("character in string  "+str2+" at index position 3 is : "+str2.charAt(3)+"<br>");
            document.getElementById("demo").innerHTML;
        </script>
    </body>
</html>