\u5220\u9664\u6570\u7ec4\u6307\u5b9a\u7684\u67d0\u4e2a\u5143\u7d20<\/strong><\/div>\n
js\u5220\u9664\u6570\u7ec4\u4e2d\u67d0\u4e00\u9879\u6216\u51e0\u9879\u7684\u51e0\u79cd\u65b9\u6cd5 https:\/\/www.jb51.net\/article\/154737.htm<\/p>\n
\u9996\u5148\u53ef\u4ee5\u7ed9JS\u7684\u6570\u7ec4\u5bf9\u8c61\u5b9a\u4e49\u4e00\u4e2a\u51fd\u6570\uff0c\u7528\u4e8e\u67e5\u627e\u6307\u5b9a\u7684\u5143\u7d20\u5728\u6570\u7ec4\u4e2d\u7684\u4f4d\u7f6e\uff0c\u5373\u7d22\u5f15\uff0c\u4ee3\u7801\u4e3a\uff1a<\/p>\n
\r\nArray.prototype.indexOf = function(val) { \r\nfor (var i = 0; i < this.length; i++) { \r\nif (this[i] == val) return i; \r\n} \r\nreturn -1; \r\n};\r\n<\/pre>\n
\u7136\u540e\u4f7f\u7528\u901a\u8fc7\u5f97\u5230\u8fd9\u4e2a\u5143\u7d20\u7684\u7d22\u5f15\uff0c\u4f7f\u7528js\u6570\u7ec4\u81ea\u5df1\u56fa\u6709\u7684\u51fd\u6570\u53bb\u5220\u9664\u8fd9\u4e2a\u5143\u7d20\uff1a<\/p>\n
\u4ee3\u7801\u4e3a\uff1a<\/p>\n
\r\nArray.prototype.remove = function(val) { \r\nvar index = this.indexOf(val); \r\nif (index > -1) { \r\nthis.splice(index, 1); \r\n} \r\n};\r\n<\/pre>\n
\u8fd9\u6837\u5c31\u6784\u9020\u4e86\u8fd9\u6837\u4e00\u4e2a\u51fd\u6570\uff0c\u6bd4\u5982\u6211\u6709\u6709\u4e00\u4e2a\u6570\u7ec4\uff1a<\/p>\n
var emp = ['abs','dsf','sdf','fd']<\/pre>\n
\u5047\u5982\u6211\u4eec\u8981\u5220\u9664\u5176\u4e2d\u7684 'fd' ,\u5c31\u53ef\u4ee5\u4f7f\u7528\uff1a<\/p>\n
emp.remove('fd');<\/pre>\n
\u5220\u9664\u7684\u6570\u7ec4\u7684\u67d0\u4e00\u9879<\/strong><\/div>\n
splice(index,len,[item]) \u6ce8\u91ca\uff1a\u8be5\u65b9\u6cd5\u4f1a\u6539\u53d8\u539f\u59cb\u6570\u7ec4\u3002<\/p>\n
splice\u67093\u4e2a\u53c2\u6570\uff0c\u5b83\u4e5f\u53ef\u4ee5\u7528\u6765\u66ff\u6362\/\u5220\u9664\/\u6dfb\u52a0\u6570\u7ec4\u5185\u67d0\u4e00\u4e2a\u6216\u8005\u51e0\u4e2a\u503c<\/p>\n
index:\u6570\u7ec4\u5f00\u59cb\u4e0b\u6807 len: \u66ff\u6362\/\u5220\u9664\u7684\u957f\u5ea6 item:\u66ff\u6362\u7684\u503c\uff0c\u5220\u9664\u64cd\u4f5c\u7684\u8bdd item\u4e3a\u7a7a<\/p>\n
\u5982\uff1aarr = ['a','b','c','d']<\/code><\/p>\n
\u5220\u9664<\/strong><\/span><\/div>\n\r\n\/\/\u5220\u9664\u8d77\u59cb\u4e0b\u6807\u4e3a1\uff0c\u957f\u5ea6\u4e3a1\u7684\u4e00\u4e2a\u503c(len\u8bbe\u7f6e1\uff0c\u5982\u679c\u4e3a0\uff0c\u5219\u6570\u7ec4\u4e0d\u53d8) \r\nvar arr = ['a','b','c','d']; \r\narr.splice(1,1); \r\nconsole.log(arr); \r\n\/\/['a','c','d']; \r\n \r\n\/\/\u5220\u9664\u8d77\u59cb\u4e0b\u6807\u4e3a1\uff0c\u957f\u5ea6\u4e3a2\u7684\u4e00\u4e2a\u503c(len\u8bbe\u7f6e2) \r\nvar arr2 = ['a','b','c','d'] \r\narr2.splice(1,2); \r\nconsole.log(arr2); \r\n\/\/['a','d']\r\n<\/pre>\n\u66ff\u6362<\/strong><\/span><\/div>\n\r\n\/\/\u66ff\u6362\u8d77\u59cb\u4e0b\u6807\u4e3a1\uff0c\u957f\u5ea6\u4e3a1\u7684\u4e00\u4e2a\u503c\u4e3a\u2018ttt'\uff0clen\u8bbe\u7f6e\u76841 \r\nvar arr = ['a','b','c','d']; \r\narr.splice(1,1,'ttt'); \r\nconsole.log(arr); \r\n\/\/['a','ttt','c','d'] \r\nvar arr2 = ['a','b','c','d']; \r\narr2.splice(1,2,'ttt'); \r\nconsole.log(arr2); \r\n\/\/['a','ttt','d'] \u66ff\u6362\u8d77\u59cb\u4e0b\u6807\u4e3a1\uff0c\u957f\u5ea6\u4e3a2\u7684\u4e24\u4e2a\u503c\u4e3a\u2018ttt'\uff0clen\u8bbe\u7f6e\u76841\r\n<\/pre>\n\u6dfb\u52a0 ---- len\u8bbe\u7f6e\u4e3a0\uff0citem\u4e3a\u6dfb\u52a0\u7684\u503c<\/strong><\/span><\/div>\n\r\nvar arr = ['a','b','c','d']; \r\narr.splice(1,0,'ttt'); \r\nconsole.log(arr); \r\n\/\/['a','ttt','b','c','d'] \u8868\u793a\u5728\u4e0b\u6807\u4e3a1\u5904\u6dfb\u52a0\u4e00\u9879'ttt'\r\n<\/pre>\ndelete\u65b9\u6cd5\u5220\u9664\u6389\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u540e\uff0c\u4f1a\u628a\u8be5\u4e0b\u6807\u51fa\u7684\u503c\u7f6e\u4e3aundefined,\u6570\u7ec4\u7684\u957f\u5ea6\u4e0d\u4f1a\u53d8<\/p>\n \r\nvar arr = ['a','b','c','d']; \r\ndelete arr[1]; \r\narr; \r\n\/\/[\"a\", undefined \u00d7 1, \"c\", \"d\"] \u4e2d\u95f4\u51fa\u73b0\u4e24\u4e2a\u9017\u53f7\uff0c\u6570\u7ec4\u957f\u5ea6\u4e0d\u53d8\uff0c\u6709\u4e00\u9879\u4e3aundefined\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"js\u5220\u9664\u6570\u7ec4\u4e2d\u67d0\u4e00\u9879\u6216\u51e0\u9879\u7684\u51e0\u79cd\u65b9\u6cd5 https:\/\/www.jb51.net\/article\/154737. […]<\/p>\n","protected":false},"author":1903,"featured_media":236636,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[55],"tags":[],"class_list":["post-236606","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-thread"],"acf":[],"_links":{"self":[{"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/posts\/236606","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/users\/1903"}],"replies":[{"embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/comments?post=236606"}],"version-history":[{"count":2,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/posts\/236606\/revisions"}],"predecessor-version":[{"id":236635,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/posts\/236606\/revisions\/236635"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/media\/236636"}],"wp:attachment":[{"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/media?parent=236606"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/categories?post=236606"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/tags?post=236606"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}