Cat-Clicker/closure.html at master · jingApril/Cat-Clicker · GitHub

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<!DOCTYPE html>
<html>

<head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
    <title>closure inside loops</title>
    <meta name="description" content="">
    <meta name="keywords" content="">
    <link href="" rel="stylesheet">
</head>

<body>
    <script>
    var funcs = [];

    for (var i = 0; i < 3; i++) { // let's create 3 functions
        funcs[i] = function() { // and store them in funcs
            console.log("My value: " + i); // each should log its value.
        };
    }


    /*for (var j = 0; j < 3; j++) {
      funcs[j]();                      // and now let's run each one to see
    }*/
    // funcs[0]();
    //

    /*Example 4*/
    function sayHello2(name) {
        var text = 'Hello ' + name; // Local variable
        var say = function() { console.log(text); }
        return say;
    }
    var say2 = sayHello2('Bob');
    say2(); // logs "Hello Bob"


    function say667() {
        var num = 42;

        var say = function() { console.log(num); }
        num = num + 2;

        return say;
    }

    var sayNumber = say667();
    sayNumber();


    /*Example 5*/

/*    function buildList(list) {
        var result = [];
        for (var i = 0; i < list.length; i++) {
            var item = 'item' + i;
            result.push(function() { console.log(item + ' ' + list[i]) });
        }
        return result;
    }

    function testList() {
        var fnlist = buildList([1, 2, 3]);
        for (var j = 0; j < fnlist.length; j++) {
            fnlist[j]();
        }
    }

    testList() */


    /*Example 6*/
    function sayAlice() {
        var say = function() { console.log(alice);}
        // Local variable that ends up within closure
        var alice = 'Hello Alice';
        return say;
        //console.log(say);
    }
    sayAlice()(); // logs "Hello Alice"

    </script>
</body>

</html>