array-ops.js

// Source: git@github.com:tooto1985/js-array-operations.git

//Example
var ary = ["A", "B", "C", "D", "E"];

//length
console.log(ary.length); //5

//push
console.log(ary.push("F")); //6

//pop
console.log(ary.pop()); //"F"

//unshift
console.log(ary.unshift("F")); //6

//shift
console.log(ary.shift()); //"F"

//splice(insert)
console.log(ary.splice(3, 0, "F")); //[]

//splice(remove)
console.log(ary.splice(3, 1)); //["F"]

//indexOf
console.log(ary.indexOf("D")); //3

//lastIndexOf
console.log(ary.lastIndexOf("D")); //3

//join
console.log(ary.join(":")); //"A:B:C:D:E"

//reverse
console.log(ary.reverse()); //["E", "D", "C", "B", "A"]

//sort
console.log(ary.sort()); //["A", "B", "C", "D", "E"]

//some
console.log(
    ary.some(function (item) {
        return item === "C";
    }),
); //true

//every
console.log(
    ary.every(function (item) {
        return item.length === 1;
    }),
); //true

//forEach
console.log(
    ary.forEach(function (item) {
        return item;
    }),
); //undefined

//reduce
console.log(
    ary.reduce(function (prevItem, item) {
        return prevItem + item;
    }),
); //"ABCDE"

//reduceRight
console.log(
    ary.reduceRight(function (prevItem, item) {
        return prevItem + item;
    }),
); //"EDCBA"

//map
console.log(
    ary.map(function (item) {
        return item + item;
    }),
); //["AA", "BB", "CC", "DD", "EE"]

//filter
console.log(
    ary.filter(function (item) {
        return item > "C";
    }),
); //["D", "E"]

//slice
console.log(ary.slice(2, 4)); //["C", "D"]

//concat
console.log(ary.concat(["G", "H"])); //["A", "B", "C", "D", "E", "G", "H"]