Strict Mode tutorial in Advance JavaScript

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<head>
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    <title>String Mode Advance JavaScript</title>
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<body>
    <script>
        // NOTE: WHEN WE USE JAVASCRIPT CODE THEN IT IS GOOD PRACTICE TO USE "use strict" AT THE STARTING OF CODE.
        "use strict";
        // Example 1 :
        // "use strict";
        // a = 10;
        // console.log(a);

        // Example 2 :
        // "use strict";
        // function test() {
        //     // "use strict"; //We can write "use strict" here also
        //     b = 20;
        // }
        // test();

        // Example 3 :
        //Here below, If we don't use "use strict", then output is not correct because we have used duplicate parameter name
        "use strict";
        function test(a, b, b) {
            console.log(a + b + b);
        }
        test(10, 20, 30);

    </script>
</body>

</html>

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