JavaScript中循环遍历Array与Map的方法小结_

1、JavaScript中循环遍历Array与Map的方法小结_ 这篇文章主要介绍了JavaScript中循环遍历Array与Map的各种方法,利用的都是js入门学习中的基础学问,需要的伴侣可以参考下 js循环数组各种方法 eg1： for (var i = 0; i myStringArray.length; i+) alert(myStringArrayi); /Do something eg2： Atotype.foo = foo!; var array = a, b, c; for (var i in array) alert(arrayi); for(var i in t

2、his.$GLOBAL_DETAIL.album_photo_ids)if(this.$GLOBAL_DETAIL.album_photo_idsi = 3487675024077108) alert(this.$GLOBAL_DETAIL.album_photo_idsi); eg3： 1,2,3,4.map( function(item) alert(item); ) eg4： var x = 1,2,3,4.map( function(item) return item * 10; ); / And now x is 10,20,30,40 eg5： var myStringArray

3、= Hello, World var len = myStringArray.length for (var i=0; ilen; +i) if (i in myStringArray) var s = myStringArrayi; . do something with s . eg6： var myStringArray = Hello, World myStringArray.forEach( function(s) . do something with s . ) eg7： var i=0,item,items = one,two,three; while(item=itemsi+

4、) console.log(item); / logs: one,two,three and for the reverse order, an even more efficient loop var items = one,two,three, i=items.length; while(i-) console.log(itemsi); / logs: three,two,one or the classical for loop var items = one,two,three for(var i=0,l=items.length; i l ; i+) console.log(item

5、si); / logs: one,two,three eg8： var myStringArray = Hello, World; / array uses not for (var i in myStringArray) console.log(i + - + myStringArrayi); / i is the index/key, not the item js循环map，猎取全部的key和value eg1： /Page地址 pageUrl : menu : loadPage.htm?url=/collect/menu.page, / 进入菜单页面 guangfaPage : loa

6、dPage.htm?url=/collect/menu.page, / 进入广发信息收集页面 pinganPage : loadPage.htm?url=/collect/menu.page, / 进入平安信息收集页面 nuonuoPage : loadPage.htm?url=/collect/menu.page, / 进入诺诺信息收集页面 youbangPage : loadPage.htm?url=/collect/menu.page, / 进入友邦信息收集页面 inputMobileNo : loadPage.htm?url=/collect/inputMobileNo.page, /

7、 进入输入手机号页面 readIdCard : loadPage.htm?url=/collect/readIdCard.page, / 进入读取身份证页面 member : loadPage.htm?url=/collect/member.page, / 进入输入会员卡号页面 bankCard : loadPage.htm?url=/collect/bankCard.page, / 进入插入银行卡页面 url : loadPage.htm?url=/collect/url.page / 进入跳转url页面 , for(var key in this.pageUrl) alert(key+ : +this.pageUrlkey); eg2： var obj = a: 1, b: 2, c: 3 ; for (var prop in obj) if (obj.hasOwnProperty(prop) / or if (Ototype.hasOwnProperty.call(obj,prop) for safety. alert(prop: + prop