{"id":630,"date":"2019-08-24T15:59:47","date_gmt":"2019-08-24T07:59:47","guid":{"rendered":"http:\/\/blog.xrhoujie.com\/?p=630"},"modified":"2019-11-24T16:03:22","modified_gmt":"2019-11-24T08:03:22","slug":"javascript-array%e7%9b%b8%e5%85%b3%e5%9f%ba%e7%a1%80%e5%b1%9e%e6%80%a7%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"http:\/\/blog.xrhoujie.com\/?p=630","title":{"rendered":"JavaScript-Array\u76f8\u5173\u57fa\u7840\u5c5e\u6027\u65b9\u6cd5(\u8f6c)"},"content":{"rendered":"

Array<\/h3>\n

\u6570\u7ec4\uff0c\u5217\u8868\u3002\u6309\u7167\u987a\u5e8f\u6392\u5217\u6570\u636e\uff0c\u6216\u8005\u8bf4\u5185\u90e8\u6570\u636e\u662f\u6309\u7167\u81ea\u7136\u6570\u987a\u5e8f\u6392\u5217\uff080,1,2,3,4…n\uff09\uff0c\u5982\u4e0b\uff1a<\/p>\n

\/\/ \u5b57\u9762\u91cf\u521b\u5efa<\/span>\r\nvar<\/span> arr <\/span>=<\/span> [<\/span>1<\/span>,<\/span> 2<\/span>,<\/span> 3<\/span>,<\/span> 4<\/span>]<\/span>\r\n\r\n\/\/ \u6309\u7167\u81ea\u7136\u6570\u7d22\u5f15\u83b7\u53d6\uff0c\u8bb0\u4f4f\uff0c\u662f\u81ea\u7136\u6570\uff0c\u5c31\u662f\u8bf4\u4ece0\u5f00\u59cb\u7d22\u5f15\uff0c0\u4e3a\u7b2c\u4e00\u4e2a\uff0c1\u4e3a\u7b2c\u4e8c\u4e2a\u2026\u2026<\/span>\r\narr<\/span>[<\/span>0<\/span>]<\/span> \/\/ 1<\/span>\r\narr<\/span>[<\/span>1<\/span>]<\/span> \/\/ 2<\/span>\r\narr<\/span>[<\/span>2<\/span>]<\/span> \/\/ 3<\/span>\r\narr<\/span>[<\/span>3<\/span>]<\/span> \/\/ 4<\/span><\/code><\/pre>\n
\u4e0b\u9762\u7b80\u5355\u4ecb\u7ecd\u4e00\u4e9b\u5e38\u7528\u65b9\u6cd5\u6216\u5c5e\u6027\uff1a<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\u65b9\u6cd5\uff08\u6216\u5c5e\u6027\uff09<\/th>\n\u8bf4\u660e<\/th>\n<\/tr>\n<\/thead>\n
length<\/td>\n\u957f\u5ea6\uff0c\u5c5e\u6027<\/strong><\/td>\n<\/tr>\n
push<\/td>\n\u5c3e\u90e8\u6dfb\u52a0\u4e00\u4e2a\u5143\u7d20<\/td>\n<\/tr>\n
pop<\/td>\n\u5220\u9664\u5c3e\u90e8\u7684\u5143\u7d20<\/td>\n<\/tr>\n
shift<\/td>\n\u5220\u9664\u7b2c\u4e00\u4e2a\u5143\u7d20<\/td>\n<\/tr>\n
unshift<\/td>\n\u6dfb\u52a0\u5143\u7d20\u5230\u5934\u90e8<\/td>\n<\/tr>\n
splice<\/td>\n\u66ff\u6362\u6570\u636e\uff08\u6839\u636e\u4e0d\u540c\u4e1a\u52a1\uff0c\u53ef\u5b9e\u73b0\u5220\u9664\uff0c\u63d2\u5165\u4ee5\u53ca\u66ff\u6362\u529f\u80fd\uff09<\/td>\n<\/tr>\n
slice<\/td>\n\u622a\u53d6\u6570\u7ec4<\/td>\n<\/tr>\n
concat<\/td>\n\u62fc\u63a5\u6570\u7ec4<\/td>\n<\/tr>\n
join<\/td>\n\u6570\u7ec4\u8f6c\u5b57\u7b26\u4e32<\/td>\n<\/tr>\n
indexOf<\/td>\n\u67e5\u627e\u5143\u7d20\u7d22\u5f15<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\u5b9e\u4f8b\u5982\u4e0b\uff0c\u5176\u4e2darray = [3, 1, 2]<\/code>\u00a0\u6bcf\u6b21\u4f7f\u7528\u90fd\u662f\u8fd9\u4e2a\u503c\uff0c\u4e0d\u56e0\u4e3a\u4f8b\u5b50\u800c\u66f4\u6539<\/p>\n
array.length<\/code>\u00a03\uff0c\u83b7\u53d6\u6570\u7ec4\u7684\u957f\u5ea6<\/p>\n
array.push(4)<\/code>\u00a0array = [3, 1, 2, 4]\uff0c\u81ea\u8eab\u6dfb\u52a0\u5230\u6700\u540e\u4e00\u4e2a\uff0c\u8fd4\u56de\u957f\u5ea6<\/p>\n
array.pop()<\/code>\u00a0array = [3, 1]\uff0c\u81ea\u8eab\u5220\u9664\u6700\u540e\u4e00\u4e2a\uff0c\u8fd4\u56de pop<\/p>\n
array.shift()<\/code>\u00a0array = [1, 2] \uff0c\u5220\u9664\u6570\u7ec4\u7b2c\u4e00\u4e2a\u5143\u7d20, \u5e76\u8fd4\u56de\u8be5\u5143\u7d20<\/p>\n
array.unshift(4)<\/code>\u00a0array = [4, 3, 1, 2]\uff0c\u6dfb\u52a0\u82e5\u5e72\u5230\u5f00\u5934, \u8fd4\u56de\u957f\u5ea6<\/p>\n
arr = array.slice(0, 1)<\/code>\u00a0arr = [3], array \u4e0d\u53d8\uff0c\u4ece\u4e0b\u6807 0\uff0c\u5230\u4e0b\u6807 1\uff08\u4e0b\u6807\u53ef\u4ee5\u662f\u8d1f\u6570\uff09\uff0c\u8fd4\u56de\u65b0\u6570\u7ec4\u5355\u4e0d\u5305\u542b\u6700\u540e\u4e00\u4e2a<\/p>\n
arr = array.slice()<\/code>\u00a0arr = [3, 1, 2]\uff0c\u6df1\u62f7\u8d1d\u7684\u4e00\u79cd\u65b9\u6cd5<\/p>\n
arr = array.concat(4, 5)<\/code>\u00a0arr = [3, 1, 2, 4, 5]\uff0c\u8fde\u63a5\u82e5\u5e72\u6570\u7ec4\u6216\u6570\u7ec4\u540e\u6dfb\u52a0\u503c<\/p>\n
arr = array.concat()<\/code>\u00a0arr = [3, 1, 2]\uff0c\u6df1\u62f7\u8d1d\u7684\u53e6\u4e00\u79cd\u65b9\u6cd5<\/p>\n
arr = array.join('-')<\/code>\u00a0arr = “3-1-2″\uff0c\u6570\u7ec4\u8f6c\u5b57\u7b26\u4e32\uff0c\u4e0d\u4f20\u53c2\u6570\u9ed8\u8ba4\u4f7f\u7528\u9017\u53f7<\/p>\n
arr = array.indexOf(1)<\/code>\u00a0arr = 1\uff0c\u83b7\u53d61\u8fd9\u4e2a\u5143\u7d20\u7684\u7d22\u5f15\u4f4d\u7f6e\uff0c\u7b2c\u4e8c\u4e2a\uff0c\u6240\u4ee5\u662f1<\/p>\n
\u6240\u8c13\u8fd4\u56de\u503c\u662f\u5bf9\u65b9\u6cd5\uff08\u5373\u51fd\u6570\uff09\u7684\u4e00\u79cd\u7279\u6027\u8868\u8ff0\uff0c\u53ef\u4ee5\u7b80\u5355\u7406\u89e3\u6210\uff0c\u51fd\u6570\u7684\u529f\u80fd\u662f\u5b8c\u6210\u4e00\u4ef6\u4e8b\u60c5\uff0c\u8fd4\u56de\u503c\u5c31\u662f\u8fd9\u4ef6\u4e8b\u60c5\u5b8c\u6210\u540e\u7684\u7ed3\u679c\uff0c\u6bd4\u5982\u6709\u4e2a\u51fd\u6570\uff08func1\uff09\u7684\u4f5c\u7528\u7684\u751f\u6210100\u8fd9\u4e2a\u6570\uff08\u867d\u7136\u6beb\u65e0\u610f\u4e49\uff09\uff0c\u90a3\u4e48\u5c31\u53ef\u4ee5\u8868\u8ff0\uff1avar a = func1()<\/code>\uff0c\u6b64\u65f6a\u5c31\u662f100\u4e86\u3002\u610f\u4e49\u5c31\u662fa\u63a5\u53d7\u4e86func1\u7684\u8fd4\u56de\u503c\u3002<\/p><\/blockquote>\n
\u4ee5\u4e0b\u8bf7\u81ea\u884c\u67e5\u9605\uff1a<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n
\u65b9\u6cd5\uff08\u6216\u5c5e\u6027\uff09<\/th>\n\u8bf4\u660e<\/th>\n<\/tr>\n<\/thead>\n
lastIndexOf<\/td>\n\u53cd\u5411\u67e5\u627e\u5143\u7d20\u7d22\u5f15<\/td>\n<\/tr>\n
forEach<\/td>\n\u904d\u5386\u6570\u7ec4\u5143\u7d20<\/td>\n<\/tr>\n
map<\/td>\n\u904d\u5386\u6570\u7ec4\u5143\u7d20<\/td>\n<\/tr>\n
filter<\/td>\n\u8fc7\u6ee4\u6570\u7ec4<\/td>\n<\/tr>\n
every<\/td>\n\u68c0\u67e5\u6570\u7ec4\u662f\u5426\u5168\u90e8\u7b26\u5408\u67d0\u6761\u4ef6<\/td>\n<\/tr>\n
some<\/td>\n\u68c0\u67e5\u6570\u7ec4\u662f\u5426\u5b58\u5728\u5143\u7d20\u7b26\u5408\u67d0\u6761\u4ef6<\/td>\n<\/tr>\n
reduce<\/td>\n\u8fed\u4ee3\u6570\u7ec4\u6240\u6709\u5143\u7d20\u5904\u7406<\/td>\n<\/tr>\n
reduceRight<\/td>\n\u53cd\u5411\u8fed\u4ee3\u6570\u7ec4\u6240\u6709\u5143\u7d20\u5904\u7406<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\u4f5c\u8005\uff1a\u524d\u7aef\u7ec5\u58eb
\n\u94fe\u63a5\uff1ahttps:\/\/www.imooc.com\/article\/49594<\/p>\n","protected":false},"excerpt":{"rendered":"
Array \u6570\u7ec4\uff0c\u5217\u8868\u3002\u6309\u7167\u987a\u5e8f\u6392\u5217\u6570\u636e\uff0c\u6216\u8005\u8bf4\u5185\u90e8\u6570\u636e\u662f\u6309\u7167\u81ea\u7136\u6570\u987a\u5e8f\u6392\u5217\uff080,1,2,3,4… […]<\/p>\n","protected":false},"author":1,"featured_media":180,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[10],"tags":[19],"_links":{"self":[{"href":"http:\/\/blog.xrhoujie.com\/index.php?rest_route=\/wp\/v2\/posts\/630"}],"collection":[{"href":"http:\/\/blog.xrhoujie.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/blog.xrhoujie.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/blog.xrhoujie.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/blog.xrhoujie.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=630"}],"version-history":[{"count":2,"href":"http:\/\/blog.xrhoujie.com\/index.php?rest_route=\/wp\/v2\/posts\/630\/revisions"}],"predecessor-version":[{"id":634,"href":"http:\/\/blog.xrhoujie.com\/index.php?rest_route=\/wp\/v2\/posts\/630\/revisions\/634"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/blog.xrhoujie.com\/index.php?rest_route=\/wp\/v2\/media\/180"}],"wp:attachment":[{"href":"http:\/\/blog.xrhoujie.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=630"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/blog.xrhoujie.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=630"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/blog.xrhoujie.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=630"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}