9-stringFunctions.html

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<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
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    <title>string functions</title>
</head>

<body>
    <script>
        //1) indexof();
        //give the first substring
        let str = "   this is javaScript course ";
        position = str.indexOf("is");
        console.log(position);

        //2) lastindexof();
        lastindex = str.lastIndexOf("is");
        console.log(lastindex);
        //3) .slice() , .substring();
        // both are extrect substrings
        //major difference is .slice() method takes negative values also.

        var slice = str.slice(1, 7);
        console.log(slice);

        //4) .replace();

        var replacesubstring = str.replace("javaScript", "python");
        console.log(replacesubstring);

        //5) toupparcase(); , tolowercase();

        var upparCase = str.toUpperCase();
        console.log(upparCase);


        var lowerCase = str.toLowerCase();
        console.log(lowerCase);

        //6) .concate();
        //concatenate the string
        var concatenate = str.concat("javaScript", "course");
        console.log(concatenate);

        //7) .trim();
        var totrim = str.trim();
        console.log(totrim);


    </script>
</body>

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