官方地址：http://dojotoolkit.org/reference-guide/1.10/dojo/_base/array.html#dojo-base-array
array模块dojo进行了很好的封装，如果想要调用必须先加载该模块：
require(["dojo/_base/array"], function(array){
// array contains the features
});
indexOf()
返回值：字符串在数组中第一次出现的位置，如果没有找到默认返回-1.
require(["dojo/_base/array"], function(array){
array.indexOf(arrayObject, valueToFind, fromIndex, findLast);
});
示例：
require(["dojo/_base/array", "dojo/dom", "dojo/dom-construct", "dojo/on", "dojo/domReady!"],
function(array, dom, domConst, on){ var arrIndxOf = ["foo", "hoo", "zoo"]; on(dom.byId("refButton1"), "click", function(){
var position = array.indexOf(arrIndxOf, "zoo");
domConst.place(
"<p>The index of the word 'zoo' within the array is " + position + "</p>",
"result1",
"after"
);
});});
<div>The content of our test array is <code>["foo", "hoo", "zoo"]</code>.</div>
<button id="refButton1" type="button">Show the index of the word 'zoo' within the array.</button>
<div id="result1"></div>
lastIndexOf()
返回值：字符串在数组中的最后位置，如果没有找到默认返回-1.
require(["dojo/_base/array"], function(array){
array.lastIndexOf(arrayObject, valueToFind, fromIndex);
});
示例：
require(["dojo/_base/array", "dojo/dom-construct", "dojo/dom", "dojo/on", "dojo/domReady!"],
function(array, domConst, dom, on){ var arrLastIndxOf = ["foo", "hoo", "zoo", "shoe", "zoo", "nuu"]; on(dom.byId("refButton2"), "click", function(){
var position = array.lastIndexOf(arrLastIndxOf, "zoo");
domConst.place(
"<p>The last index of the word 'zoo' within the array is " + position + "</p>",
"result2",
"after"
);
});
});
<div>The content of our test array is <code>["foo", "hoo", "zoo", "shoe", "zoo", "nuu"]</code>.</div>
<button id="refButton2" type="button">Show the last index of the word 'zoo' within the array.</button>
<div id="result2"></div>
forEach()
遍历数组或者nodelists。
require(["dojo/_base/array"], function(array){
array.forEach(arrayObject, callback, thisObject);
});
第三个参数，调节forEach（）的访问范围。
示例：
require(["dojo/_base/array"], function(array){
var foo = {
myMethod: function(el){
console.log(el);
}
}; array.forEach(["a","b","c"],function(item){
this.myMethod(item);
}, foo);
});
如果你想break这个循环，可以使用some（）
require(["dojo/_base/array", "dojo/dom", "dojo/on", "dojo/domReady!"],
function(array, dom, on){ on(dom.byId("start"), "click", function(){
var myArray = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9],
count; // iterate ALL entries of myArray
count = 0;
array.forEach(myArray, function(entry){
count++;
}); alert("iterated " + count + " entries (forEach())"); // will show "iterated 10 entries" // let's only iterate the first 4 entries of myArray
count = 0;
array.some(myArray, function(entry){
if(count >= 4){
return false;
}
count++;
}); alert("iterated "+count+" entries (some())"); // will show "iterated 4 entries"
});
});
<button id="start" type="button">Start Testloops</button>
filter()
返回值：数组过滤之后的结果数组。
require(["dojo/_base/array"], function(array){
filteredArray = array.filter(unfilteredArray, callback, thisObject);
});
示例：
require(["dojo/_base/array", "dojo/dom", "dojo/dom-construct", "dojo/on", "dojo/domReady!"],
function(array, dom, domConst, on){
var arr = [
{ surname: "Washington", name: "Paul" },
{ surname: "Gordon", name: "Amie" },
{ surname: "Meyer", name: "Sofie" },
{ surname: "Jaysons", name: "Josh" },
{ surname: "Washington", name: "George" },
{ surname: "Doormat", name: "Amber" },
{ surname: "Smith", name: "Susan" },
{ surname: "Hill", name: "Strawberry" },
{ surname: "Washington", name: "Dan" },
{ surname: "Dojo", name: "Master" }
]; on(dom.byId("start"), "click", function(){
var filteredArr = array.filter(arr, function(item){
return item.surname == "Washington";
}); array.forEach(filteredArr, function(item, i){
domConst.create("li", {innerHTML: i+1+". "+item.surname+", "+item.name}, "filtered-items");
}); array.forEach(arr, function(item, i){
domConst.create("li", {innerHTML: i+1+". "+item.surname+", "+item.name}, "unFiltered-items");
});
});
});
<button id="start" type="button">Filter array</button>
<br/>
<div style="width: 300px; float: left;">
Filtered items<br />
(only people with "Washington" as surname)
<ul id="filtered-items"> </ul>
</div>
<div style="width: 300px; float: left;">
Unfiltered items<br />
(all people are represented in the list)
<ul id="unFiltered-items"> </ul>
</div>
map()
返回值：经过修改之后的另外一个数组。
require(["dojo/_base/array"], function(array){
array.map(arrayObject, callback, thisObject);
});
示例：
require(["dojo/_base/array", "dojo/dom", "dojo/dom-construct", "dojo/on", "dojo/domReady!"],
function(array, dom, domConst, on){ var arrValues = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]; on(dom.byId("button"), "click", function(){
var doubleValue = array.map(arrValues, function(item){
return item * 2;
}); array.forEach(doubleValue, function(item){
var li = domConst.create("li");
li.innerHTML = item;
dom.byId("arrValuesAfter-items").appendChild(li);
}); array.forEach(arrValues, function(item){
var li = domConst.create("li");
li.innerHTML = item;
dom.byId("arrValues-items").appendChild(li);
});
});
});
<button id="button" type="button">Run array.map()</button>
<br />
<div style="width: 300px; float: left; margin-top: 10px;">
Values before running array.map()
<ul id="arrValues-items"></ul>
</div>
<div style="width: 300px; float: left; margin-top: 10px;">
Values after running array.map()
<ul id="arrValuesAfter-items"></ul>
</div>
有时候为了不修改原数组本身，dojo提供了dojo/_base/lang::clone()
示例：
require(["dojo/_base/array", "dojo/_base/lang", "dojo/dom", "dojo/dom-construct", "dojo/on", "dojo/domReady!"],
function(array, lang, dom, domConst, on){ var arrSalary = [
{ surname: "Washington", name: "Paul", salary: 200 },
{ surname: "Gordon", name: "Amie", salary: 350 },
{ surname: "Meyer", name: "Sofie", salary: 100 },
{ surname: "Jaysons", name: "Josh", salary: 2500 },
{ surname: "Washington", name: "George", salary: 10 },
{ surname: "Doormat", name: "Amber", salary: 320 },
{ surname: "Smith", name: "Susan", salary: 3200 },
{ surname: "Hill", name: "Strawberry", salary: 290 },
{ surname: "Washington", name: "Dan", salary: 200 },
{ surname: "Dojo", name: "Master", salary: 205 }
]; on(dom.byId("button"), "click", function(){
var raisedSalaries = array.map(arrSalary, function(item){
var newItem = lang.clone(item);
newItem.salary += (newItem.salary/100)*10;
return newItem;
}); array.forEach(raisedSalaries, function(item, i){
var li = domConst.create("li");
li.innerHTML = i+1+". "+item.surname+", "+item.name+". New salary: "+item.salary;
dom.byId("filteredSalary-items").appendChild(li);
}); array.forEach(arrSalary, function(item, i){
var li = domConst.create("li");
li.innerHTML = i+1+". "+item.surname+", "+item.name+". Old salary: "+item.salary;
dom.byId("unFilteredSalary-items").appendChild(li);
});
});
});
<button id="button" type="button">Raise the salary</button>
<br />
<div style="width: 300px; float: left; margin-top: 10px;">
Peoples' salaries after raise:
<ul id="filteredSalary-items"></ul>
</div>
<div style="width: 300px; float: left; margin-top: 10px;">
Peoples' salaries before raise:
<ul id="unFilteredSalary-items"></ul>
</div>
some()
返回值：true or false。只要方法里有一个是真，那么其将会返回true。常常被用在if语句中。
require(["dojo/_base/array"], function(array){
var a = array.some(arrayObject, callback, thisObject);
});
示例：检查是否有一个值 >= 1,000,000。
require(["dojo/_base/array", "dojo/dom", "dojo/dom-construct", "dojo/on", "dojo/domReady!"],
function(array, dom, domConst, on){
var arrIndxSome = [200000, 500000, 350000, 1000000, 75, 3]; on(dom.byId("refButton6"), "click", function(){
if(array.some(arrIndxSome, function(item){ return item >= 1000000; })){
result = 'yes, there are';
}else{
result = 'no, there are no such items';
} domConst.place(
"<p>The answer is: " + result + "</p>",
"result6",
"after"
);
});
});
<div>The content of our test array is <code>[200000, 500000, 350000, 1000000, 75, 3]</code>.</div>
<button id="refButton6" type="button">Are there some items >=1000000 within the array?</button>
<div id="result6"></div>
every()
返回值：true or false 。只有当方法里面，每一项都返回true，那么最终才会返回true。常常被用在if语句中。
require(["dojo/_base/array"], function(array){
array.every(arrayObject, callback, thisObject);
});
示例：检查是否每一项都>3000
require(["dojo/_base/array", "dojo/dom", "dojo/dom-construct", "dojo/on", "dojo/domReady!"],
function(array, dom, domConst, on){ var arrIndxEvery = [
{ month: "january", income: 2000 },
{ month: "february", income: 3200 },
{ month: "march", income: 2100 }
]; on(dom.byId("refButton7"), "click", function(){
if(array.every(arrIndxEvery , function(item){ return item.income >= 3000; })){
result = "yes, all income >= 3000";
}else{
result = "no, not all income >= 3000";
}
domConst.place(
"<p>The answer is: " + result + "</p>",
"result7",
"after"
);
});
});
<div>The content of our test array is <code>[{ month: "january", income: 2000 }, { month: "february", income: 3200 }, { month: "march", income: 2100 }]</code>.</div>
<button id="refButton7" type="button">Is the client allowed to get the credit?</button>
<div id="result7"></div>
