3 examples of 'add all numbers in array javascript' in JavaScript

84
function addArrayIndex(v) {
85
    for (var i = 0; i < v.length; i++) {
86
        var o = v[i];
87
        if (o !== null && typeof(o) === "object") {
88
            if (i === 0) {
89
                o.__first__ = true;
90
            } else if (i === (v.length - 1)) {
91
                o.__last__ = true;
92
            } else {
93
                o.__mid__ = true;
94
            }
95
            o.__index__ = i;
96
        }
97
    }
98
}

82
function addArrayIndex(v) {
83
    for (var i = 0; i < v.length; i++) {
84
        var o = v[i];
85
        if (typeof(o) === "object") {
86
            if (i === 0) {
87
                o.__first__ = true;
88
            } else if (i === (v.length - 1)) {
89
                o.__last__ = true;
90
            } else {
91
                o.__mid__ = true;
92
            }
93
            o.__index__ = i;
94
        }
95
    }
96
}

10
function writeNumbers(array) {
11
    var i = 0;
12
    while (i < array.length) {
13
        // Assume the array's length is evenly divisible by 10 to avoid length
14
        // check overhead.
15
        array[i++] = i;
16
        array[i++] = i;
17
        array[i++] = i;
18
        array[i++] = i;
19
        array[i++] = i;
20
        array[i++] = i;
21
        array[i++] = i;
22
        array[i++] = i;
23
        array[i++] = i;
24
        array[i++] = i;
25
    }
26
    return i;
27
}