JavaScript-Folder/Scope.html at main · researcher-program/JavaScript-Folder · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>  Scope | JavaScript | Al- Arafat </title>
</head>
<body>
    <H1> Assalamualaikum Or-Rohmatullah </H1>
    <H2> Al -  Arafat </H2>
</body>
<script src="Scope.js"></script>
<script src="test-13.js"></script>
<script>
    // Type-1:


 /*
                    Scope ==>
                        {

                        } :
 */
      let a = 10
      const b =20
      var c = 30
      d = 40
/*
console.log(a);
console.log(b);
console.log(c);
console.log(d);
*/
if (true)
{
    let a = 10
    const b =20
    var c = 30
    d = 40
}
/*
console.log(a);
console.log(b);
console.log(c);
console.log(d);
*/
/*
            // Block Scope:

        if (true) {
    let a = 10
      const b =20
      var c = 30
      d = 40
        }
*/
 /*
             // Global Scope:
 //var c = 300 //don't use var
    let f = 300
    if (true) {
        let f = 10
        console.log("Inner: ",f);
    }
    console.log("Outer:",f);
 */
/*
            For Loop Syntax:

    for (let index = 0; index < array.length; index++) {
        const element = array[index];

    }
*/

/*
    Difference's between Block Scope & Global Scope:
    Block Scope :" { } " এর ভিতরে যা কিছু থাকবে সব কিছুই  Block Scope ।
    Global Scope: " { } " এর বাহিরে যা কিছু থাকবে সব কিছুই Global Scope ।
*/
</script>

</html>