HTML-and-JavaScript/JavaScript_second.html at main · skn1998/HTML-and-JavaScript · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>String in JavaScript</title>
    <script>
        var name = "Saurav";
        var surname = 'Nishant';
        var single = "cat";
        var plural = "cat's";
        console.log("Plural of", single, "is", plural + ".");
        var temp = `Plural of ${single} is ${plural}.`;
        console.log(temp);
        console.log(name.charAt(3));

        var str = 'I am Saurav Kumar Nishant';
        var len = str.length;
        console.log(`Length of "${str}" is ${len}.`);

        str = "His name is Saurav."
        console.log(str.indexOf("is"), str.lastIndexOf("is"));

        console.log(str.substring(4, 10)); // substring from 4 to 9
        console.log(str.substr(4, 10)); // substring starting from index 4 and of length 10
        var rep_str = str.replace("is", "IS"); // replaces the first occurance
        console.log(rep_str);

        var cap_str = str.toUpperCase();
        var small_str = str.toLowerCase();
        console.log(`${str}, ${cap_str}, ${small_str}`);

        console.log("  I am not available.     ".trim()); // removes whitespaces from start and end
    </script>
</head>

<body>
    <h1>This is JavaScript String tutotial.</h1>
</body>
</html>