{"id":30,"date":"2007-07-20T17:01:00","date_gmt":"2007-07-20T21:01:00","guid":{"rendered":"http:\/\/prglab.com\/blog\/js-tutorial\/js-array"},"modified":"2010-11-11T15:34:56","modified_gmt":"2010-11-11T19:34:56","slug":"js-array","status":"publish","type":"page","link":"https:\/\/www.prglab.com\/blog\/js-tutorial\/js-array","title":{"rendered":"JavaScript \u4e2d\u7684\u6570\u7ec4Array"},"content":{"rendered":"

\u6570\u7ec4\u7528\u6765\u5728\u4e00\u4e2a\u53d8\u91cf\u540d\u4e0b\u5b58\u50a8\u4e00\u7ec4\u6570\u503c\u3002—————————————————————————<\/p>\n

\u5b9a\u4e49\u6570\u7ec4<\/h2>\n

\u5b9a\u4e49\u6570\u7ec4\u8981\u4f7f\u7528\u5173\u952e\u5b57 new\u3002\u4e0b\u9762\u8fd9\u884c\u4ee3\u7801\u5b9a\u4e49\u4e86\u4e00\u4e2a\u53eb\u505amyArray\u7684\u6570\u7ec4\u5bf9\u8c61\uff1a<\/p>\n\n\n\n
var myArray=new Array()<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u5411\u6570\u7ec4\u4e2d\u586b\u503c\u6709\u4e24\u79cd\u65b9\u6cd5\uff1a<\/p>\n

1\u3001\u5148\u5b9a\u4e49\u518d\u586b\u503c:<\/p>\n\n\n\n
var mycars=new Array()
\nmycars[0]=”Saab”
\nmycars[1]=”Volvo”
\nmycars[2]=”BMW”<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u4e0a\u9762\u7684\u5b9a\u4e49\u4e2d\u6ca1\u6709\u5b9a\u4e49\u6570\u7ec4\u7684\u5927\u5c0f\uff0c\u4f60\u53ef\u4ee5\u5411\u6570\u7ec4\u4e2d\u6dfb\u52a0\u4efb\u610f\u591a\u4e2a\u503c\u3002\u4f60\u4e5f\u53ef\u4ee5\u5728\u5b9a\u4e49\u6570\u7ec4\u5bf9\u8c61\u65f6\u5199\u5165\u4e00\u4e2a\u6574\u578b\u53c2\u6570\u6765\u63a7\u5236\u6570\u7ec4\u7684\u5927\u5c0f\uff0c\u4f8b\u5982\uff1a<\/p>\n\n\n\n
var mycars=new Array(3)
\nmycars[0]=”Saab”
\nmycars[1]=”Volvo”
\nmycars[2]=”BMW”<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

2\u3001\u5b9a\u4e49\u7684\u540c\u65f6\u586b\u503c:<\/p>\n\n\n\n
var mycars=new Array(“Saab”,”Volvo”,”BMW”)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u6ce8\u610f\uff1a<\/strong>\u5982\u679c\u5411\u6570\u7ec4\u4e2d\u586b\u5165\u6570\u5b57\u6216 true\/false \u503c\uff0c\u5219\u6570\u7ec4\u4e2d\u53d8\u91cf\u7c7b\u578b\u5c06\u4e3a\u6570\u5b57\u578b(numeric)\u6216\u5e03\u5c14\u578b(boolean)\uff0c\u800c\u4e0d\u662f\u5b57\u7b26\u4e32\u578b\u3002<\/p>\n

\n

\u8bbf\u95ee\u6570\u7ec4<\/h2>\n

\u4f60\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528\u6570\u7ec4\u7684\u540d\u79f0\u540e\u9762\u52a0\u7d22\u5f15\u53f7\u6765\u6307\u5411\u6570\u7ec4\u4e2d\u67d0\u4e00\u5143\u7d20\u3002\u7d22\u5f15\u53f7\u4ece\u96f6\u5f00\u59cb\u3002<\/p>\n

\u4e0b\u9762\u8fd9\u884c\u4ee3\u7801:<\/p>\n\n\n\n
document.write(mycars[0])<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u5c06\u8f93\u51fa\uff1a<\/p>\n\n\n\n
Saab<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\n

\u4fee\u6539\u73b0\u6709\u6570\u7ec4\u4e2d\u7684\u503c<\/h2>\n

\u8981\u4fee\u6539\u6570\u7ec4\u4e2d\u73b0\u6709\u7684\u503c\u53ea\u9700\u8981\u5c06\u65b0\u503c\u5199\u5165\u6570\u7ec4\u6307\u5b9a\u4f4d\u7f6e\u5373\u53ef\uff0c\u4f8b\u5982\uff1a<\/p>\n\n\n\n
mycars[0]=”Opel”<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u5219\u73b0\u5728\u4e0b\u9762\u8fd9\u884c\u4ee3\u7801\uff1a<\/p>\n\n\n\n
document.write(mycars[0])<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u4f1a\u5199\u51fa<\/p>\n\n\n\n
Opel<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\n

\u8303\u4f8b<\/strong>\uff1aFor…In \u8bed\u53e5<\/strong>\u600e\u6837\u5229\u7528for…in\u5faa\u73af\u6765\u8bbf\u95ee\u6570\u7ec4\u4e2d\u6bcf\u4e00\u4e2a\u503c<\/p>\n\n\n\n
<html>
\n<body>
\n<script type=”text\/javascript”>
\nvar x
\nvar mycars = new Array()
\nmycars[0] = “Saab”
\nmycars[1] = “Volvo”
\nmycars[2] = “BMW”<\/p>\n

for (x in mycars)
\n{
\ndocument.write(mycars[x] + “<br \/>”)
\n}
\n<\/script>
\n<\/body>
\n<\/html><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

——————————————————————————<\/p>\n

\u4f8b\uff1a\u5408\u5e76\u4e24\u4e2a\u6570\u7ec4–concat()<\/strong><\/p>\n

\u600e\u6837\u4f7f\u7528concat()\u51fd\u6570\u6765\u5408\u5e76\u4e24\u4e2a\u6570\u7ec4<\/p>\n\n\n\n
<html>
\n<body><\/p>\n

<script type=”text\/javascript”><\/p>\n

var arr = new Array(3)
\narr[0] = “Jani”
\narr[1] = “Tove”
\narr[2] = “Hege”<\/p>\n

var arr2 = new Array(3)
\narr2[0] = “John”
\narr2[1] = “Andy”
\narr2[2] = “Wendy”<\/p>\n

document.write(arr.concat(arr2))<\/p>\n

<\/script><\/p>\n

<\/body>
\n<\/html><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

—————————————————————————————<\/p>\n

\u4f8b\uff1a\u5c06\u6570\u7ec4\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32– join()<\/strong><\/p>\n

\u600e\u6837\u4f7f\u7528\u51fd\u6570join()\u5c06\u6570\u7ec4\u4e2d\u6240\u6709\u7684\u5143\u7d20\u8fde\u63a5\u4e3a\u4e00\u4e2a\u5b57\u7b26\u4e32<\/p>\n\n\n\n
<html>
\n<body><\/p>\n

<script type=”text\/javascript”><\/p>\n

var arr = new Array(3)
\narr[0] = “Jani”
\narr[1] = “Hege”
\narr[2] = “Stale”<\/p>\n

document.write(arr.join() + “<br \/>”)
\ndocument.write(arr.join(“.”))<\/p>\n

<\/script><\/p>\n

<\/body>
\n<\/html><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

—————————————————————————-<\/p>\n

\u4f8b\uff1a\u6587\u5b57\u6570\u7ec4\u7684\u6392\u5e8f — sort()<\/strong><\/p>\n

\u600e\u6837\u7528sort()\u51fd\u6570\u6392\u5217\u4e00\u4e2a\u6587\u5b57\u6570\u7ec4<\/p>\n\n\n\n
<html>
\n<body><\/p>\n

<script type=”text\/javascript”><\/p>\n

var arr = new Array(6)
\narr[0] = “Jani”
\narr[1] = “Hege”
\narr[2] = “Stale”
\narr[3] = “Kai Jim”
\narr[4] = “Borge”
\narr[5] = “Tove”<\/p>\n

document.write(arr + “<br \/>”)
\ndocument.write(arr.sort())
\n<\/script><\/p>\n

<\/body>
\n<\/html><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

—————————————————————————-<\/p>\n

\u4f8b\uff1a \u6570\u5b57\u6570\u7ec4\u7684<\/strong>\u6392\u5e8f<\/strong> — sort()<\/strong><\/p>\n

\u600e\u6837\u7528\u51fd\u6570sort()\u6765\u6392\u5217\u4e00\u4e2a\u6570\u5b57\u6570\u7ec4<\/p>\n\n\n\n
<html>
\n<body><\/p>\n

<script type=”text\/javascript”><\/p>\n

function sortNumber(a, b)
\n{
\nreturn a – b
\n}<\/p>\n

var arr = new Array(6)
\narr[0] = “10”
\narr[1] = “5”
\narr[2] = “40”
\narr[3] = “25”
\narr[4] = “1000”
\narr[5] = “1”<\/p>\n

document.write(arr + “<br \/>”)
\ndocument.write(arr.sort(sortNumber))<\/p>\n

<\/script><\/p>\n

<\/body>
\n<\/html><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

\u6570\u7ec4\u7528\u6765\u5728\u4e00\u4e2a\u53d8\u91cf\u540d\u4e0b\u5b58\u50a8\u4e00\u7ec4\u6570\u503c\u3002————————————————————————— \u5b9a\u4e49\u6570\u7ec4 \u5b9a\u4e49\u6570\u7ec4\u8981\u4f7f\u7528\u5173\u952e\u5b57 new\u3002\u4e0b\u9762\u8fd9\u884c\u4ee3\u7801\u5b9a\u4e49\u4e86\u4e00\u4e2a\u53eb\u505amyArray\u7684\u6570\u7ec4\u5bf9\u8c61\uff1a var myArray=new Array() \u5411\u6570\u7ec4\u4e2d\u586b\u503c\u6709\u4e24\u79cd\u65b9\u6cd5\uff1a 1\u3001\u5148\u5b9a\u4e49\u518d\u586b\u503c: var mycars=new Array() mycars[0]=”Saab” mycars[1]=”Volvo” mycars[2]=”BMW” \u4e0a\u9762\u7684\u5b9a\u4e49\u4e2d\u6ca1\u6709\u5b9a\u4e49\u6570\u7ec4\u7684\u5927\u5c0f\uff0c\u4f60\u53ef\u4ee5\u5411\u6570\u7ec4\u4e2d\u6dfb\u52a0\u4efb\u610f\u591a\u4e2a\u503c\u3002\u4f60\u4e5f\u53ef\u4ee5\u5728\u5b9a\u4e49\u6570\u7ec4\u5bf9\u8c61\u65f6\u5199\u5165\u4e00\u4e2a\u6574\u578b\u53c2\u6570\u6765\u63a7\u5236\u6570\u7ec4\u7684\u5927\u5c0f\uff0c\u4f8b\u5982\uff1a var mycars=new Array(3) mycars[0]=”Saab” mycars[1]=”Volvo” mycars[2]=”BMW” 2\u3001\u5b9a\u4e49\u7684\u540c\u65f6\u586b\u503c: var mycars=new Array(“Saab”,”Volvo”,”BMW”) \u6ce8\u610f\uff1a\u5982\u679c\u5411\u6570\u7ec4\u4e2d\u586b\u5165\u6570\u5b57\u6216 true\/false \u503c\uff0c\u5219\u6570\u7ec4\u4e2d\u53d8\u91cf\u7c7b\u578b\u5c06\u4e3a\u6570\u5b57\u578b(numeric)\u6216\u5e03\u5c14\u578b(boolean)\uff0c\u800c\u4e0d\u662f\u5b57\u7b26\u4e32\u578b\u3002 \u8bbf\u95ee\u6570\u7ec4 \u4f60\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528\u6570\u7ec4\u7684\u540d\u79f0\u540e\u9762\u52a0\u7d22\u5f15\u53f7\u6765\u6307\u5411\u6570\u7ec4\u4e2d\u67d0\u4e00\u5143\u7d20\u3002\u7d22\u5f15\u53f7\u4ece\u96f6\u5f00\u59cb\u3002 \u4e0b\u9762\u8fd9\u884c\u4ee3\u7801: document.write(mycars[0]) \u5c06\u8f93\u51fa\uff1a Saab \u4fee\u6539\u73b0\u6709\u6570\u7ec4\u4e2d\u7684\u503c \u8981\u4fee\u6539\u6570\u7ec4\u4e2d\u73b0\u6709\u7684\u503c\u53ea\u9700\u8981\u5c06\u65b0\u503c\u5199\u5165\u6570\u7ec4\u6307\u5b9a\u4f4d\u7f6e\u5373\u53ef\uff0c\u4f8b\u5982\uff1a mycars[0]=”Opel” \u5219\u73b0\u5728\u4e0b\u9762\u8fd9\u884c\u4ee3\u7801\uff1a document.write(mycars[0]) \u4f1a\u5199\u51fa Opel \u8303\u4f8b\uff1aFor…In \u8bed\u53e5\u600e\u6837\u5229\u7528for…in\u5faa\u73af\u6765\u8bbf\u95ee\u6570\u7ec4\u4e2d\u6bcf\u4e00\u4e2a\u503c <html> <body> <script type=”text\/javascript”> var x var mycars = new Array() […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":3,"menu_order":21,"comment_status":"open","ping_status":"open","template":"","meta":[],"_links":{"self":[{"href":"https:\/\/www.prglab.com\/blog\/wp-json\/wp\/v2\/pages\/30"}],"collection":[{"href":"https:\/\/www.prglab.com\/blog\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.prglab.com\/blog\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.prglab.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.prglab.com\/blog\/wp-json\/wp\/v2\/comments?post=30"}],"version-history":[{"count":3,"href":"https:\/\/www.prglab.com\/blog\/wp-json\/wp\/v2\/pages\/30\/revisions"}],"predecessor-version":[{"id":199,"href":"https:\/\/www.prglab.com\/blog\/wp-json\/wp\/v2\/pages\/30\/revisions\/199"}],"up":[{"embeddable":true,"href":"https:\/\/www.prglab.com\/blog\/wp-json\/wp\/v2\/pages\/3"}],"wp:attachment":[{"href":"https:\/\/www.prglab.com\/blog\/wp-json\/wp\/v2\/media?parent=30"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}