{"id":1858,"date":"2016-06-07T23:17:35","date_gmt":"2016-06-07T15:17:35","guid":{"rendered":"http:\/\/www.daliane.com\/?p=1858"},"modified":"2016-06-08T00:02:53","modified_gmt":"2016-06-07T16:02:53","slug":"js_shen_kao_bei_he_qian_kao_bei","status":"publish","type":"post","link":"http:\/\/www.daliane.com\/category\/jinjiaoyou\/js_shen_kao_bei_he_qian_kao_bei\/","title":{"rendered":"js\u6df1\u62f7\u8d1d\u548c\u6d45\u62f7\u8d1d"},"content":{"rendered":"

\u4e00.\u6570\u7ec4\u7684\u6df1\u6d45\u62f7\u8d1d<\/strong><\/p>\n

\u5728\u4f7f\u7528JavaScript\u5bf9\u6570\u7ec4\u8fdb\u884c\u64cd\u4f5c\u7684\u65f6\u5019\uff0c\u6211\u4eec\u7ecf\u5e38\u9700\u8981\u5c06\u6570\u7ec4\u8fdb\u884c\u5907\u4efd\uff0c\u4e8b\u5b9e\u8bc1\u660e\u5982\u679c\u53ea\u662f\u7b80\u5355\u7684\u5c06\u5b83\u8d4b\u4e88\u5176\u4ed6\u53d8\u91cf\uff0c\u90a3\u4e48\u6211\u4eec\u53ea\u8981\u66f4\u6539\u5176\u4e2d\u7684\u4efb\u4f55\u4e00\u4e2a\uff0c\u7136\u540e\u5176\u4ed6\u7684\u4e5f\u4f1a\u8ddf\u7740\u6539\u53d8\uff0c\u8fd9\u5c31\u5bfc\u81f4\u4e86\u95ee\u9898\u7684\u53d1\u751f\u3002<\/p>\n

\n
\n
Js\u4ee3\u7801 \u00a0\"\u6536\u85cf\u4ee3\u7801\"<\/a><\/div>\n<\/div>\n
    \n
  1. var<\/span>\u00a0arr\u00a0=\u00a0[“One”<\/span>,“Two”<\/span>,“Three”<\/span>];<\/li>\n
  2. <\/li>\n
  3. var<\/span>\u00a0arrto\u00a0=\u00a0arr;<\/li>\n
  4. arrto[1]\u00a0=\u00a0“test”<\/span>;<\/li>\n
  5. document.writeln(“\u6570\u7ec4\u7684\u539f\u59cb\u503c\uff1a”<\/span>\u00a0+\u00a0arr\u00a0+\u00a0“<br\u00a0\/>”<\/span>);\/\/Export:\u6570\u7ec4\u7684\u539f\u59cb\u503c\uff1aOne,test,Three<\/span><\/li>\n
  6. document.writeln(“\u6570\u7ec4\u7684\u65b0\u503c\uff1a”<\/span>\u00a0+\u00a0arrto\u00a0+\u00a0“<br\u00a0\/>”<\/span>);\/\/Export:\u6570\u7ec4\u7684\u65b0\u503c\uff1aOne,test,Three<\/span><\/li>\n<\/ol>\n<\/div>\n

    \u50cf\u4e0a\u9762\u7684\u8fd9\u79cd\u76f4\u63a5\u8d4b\u503c\u7684\u65b9\u5f0f\u5c31\u662f\u6d45\u62f7\u8d1d\uff0c\u5f88\u591a\u65f6\u5019\uff0c\u8fd9\u6837\u5e76\u4e0d\u662f\u6211\u4eec\u60f3\u8981\u5f97\u5230\u7684\u7ed3\u679c\uff0c\u5176\u5b9e\u6211\u4eec\u60f3\u8981\u7684\u662farr\u7684\u503c\u4e0d\u53d8\uff0c\u4e0d\u662f\u5417\uff1f<\/p>\n

    \u65b9\u6cd5\u4e00\uff1ajs\u7684slice\u51fd\u6570\u00a0<\/strong><\/p>\n

    \u5bf9\u4e8earray\u5bf9\u8c61\u7684slice\u51fd\u6570\uff0c\u8fd4\u56de\u4e00\u4e2a\u6570\u7ec4\u7684\u4e00\u6bb5\u3002\uff08\u4ecd\u4e3a\u6570\u7ec4\uff09<\/p>\n

    \u8bed\u6cd5\uff1aarrayObj.slice(start, [end])<\/p>\n

    \u53c2\u6570arrayObj\uff1a\u5fc5\u9009\u9879\u3002\u4e00\u4e2a Array \u5bf9\u8c61\u3002<\/p>\n

    start\uff1a\u5fc5\u9009\u9879\u3002arrayObj \u4e2d\u6240\u6307\u5b9a\u7684\u90e8\u5206\u7684\u5f00\u59cb\u5143\u7d20\u662f\u4ece\u96f6\u5f00\u59cb\u8ba1\u7b97\u7684\u4e0b\u6807\u3002<\/p>\n

    end\uff1a\u53ef\u9009\u9879\u3002arrayObj \u4e2d\u6240\u6307\u5b9a\u7684\u90e8\u5206\u7684\u7ed3\u675f\u5143\u7d20\u662f\u4ece\u96f6\u5f00\u59cb\u8ba1\u7b97\u7684\u4e0b\u6807\u3002<\/p>\n

    \u8bf4\u660e\uff1a<\/p>\n

    slice \u65b9\u6cd5\u8fd4\u56de\u4e00\u4e2a Array \u5bf9\u8c61\uff0c\u5176\u4e2d\u5305\u542b\u4e86 arrayObj \u7684\u6307\u5b9a\u90e8\u5206\u3002<\/p>\n

    slice \u65b9\u6cd5\u4e00\u76f4\u590d\u5236\u5230 end \u6240\u6307\u5b9a\u7684\u5143\u7d20\uff0c\u4f46\u662f\u4e0d\u5305\u62ec\u8be5\u5143\u7d20\u3002\u5982\u679c start \u4e3a\u8d1f\uff0c\u5c06\u5b83\u4f5c\u4e3a length + start\u5904\u7406\uff0c\u6b64\u5904 length \u4e3a\u6570\u7ec4\u7684\u957f\u5ea6\u3002\u5982\u679c end \u4e3a\u8d1f\uff0c\u5c31\u5c06\u5b83\u4f5c\u4e3a length + end \u5904\u7406\uff0c\u6b64\u5904 length \u4e3a\u6570\u7ec4\u7684\u957f\u5ea6\u3002\u5982\u679c\u7701\u7565 end \uff0c\u90a3\u4e48 slice \u65b9\u6cd5\u5c06\u4e00\u76f4\u590d\u5236\u5230 arrayObj \u7684\u7ed3\u5c3e\u3002\u5982\u679c end \u51fa\u73b0\u5728 start \u4e4b\u524d\uff0c\u4e0d\u590d\u5236\u4efb\u4f55\u5143\u7d20\u5230\u65b0\u6570\u7ec4\u4e2d\u3002<\/p>\n

    \n
    \n
    Js\u4ee3\u7801 \u00a0\"\u6536\u85cf\u4ee3\u7801\"<\/a><\/div>\n<\/div>\n
      \n
    1. var<\/span>\u00a0arr\u00a0=\u00a0[“One”<\/span>,“Two”<\/span>,“Three”<\/span>];<\/li>\n
    2. <\/li>\n
    3. var<\/span>\u00a0arrtoo\u00a0=\u00a0arr.slice(0);<\/li>\n
    4. arrtoo[1]\u00a0=\u00a0“set\u00a0Map”<\/span>;<\/li>\n
    5. document.writeln(“\u6570\u7ec4\u7684\u539f\u59cb\u503c\uff1a”<\/span>\u00a0+\u00a0arr\u00a0+\u00a0“<br\u00a0\/>”<\/span>);\/\/Export:\u6570\u7ec4\u7684\u539f\u59cb\u503c\uff1aOne,Two,Three<\/span><\/li>\n
    6. document.writeln(“\u6570\u7ec4\u7684\u65b0\u503c\uff1a”<\/span>\u00a0+\u00a0arrtoo\u00a0+\u00a0“<br\u00a0\/>”<\/span>);\/\/Export:\u6570\u7ec4\u7684\u65b0\u503c\uff1aOne,set\u00a0Map,Three<\/span><\/li>\n<\/ol>\n<\/div>\n

      \u65b9\u6cd5\u4e8c\uff1ajs\u7684concat\u65b9\u6cd5\u00a0<\/strong><\/p>\n

      concat() \u65b9\u6cd5\u7528\u4e8e\u8fde\u63a5\u4e24\u4e2a\u6216\u591a\u4e2a\u6570\u7ec4\u3002\u8be5\u65b9\u6cd5\u4e0d\u4f1a\u6539\u53d8\u73b0\u6709\u7684\u6570\u7ec4\uff0c\u800c\u4ec5\u4ec5\u4f1a\u8fd4\u56de\u88ab\u8fde\u63a5\u6570\u7ec4\u7684\u4e00\u4e2a\u526f\u672c\u3002<\/p>\n

      \u8bed\u6cd5\uff1aarrayObject.concat(arrayX,arrayX,……,arrayX)<\/p>\n

      \u8bf4\u660e\uff1a\u8fd4\u56de\u4e00\u4e2a\u65b0\u7684\u6570\u7ec4\u3002\u8be5\u6570\u7ec4\u662f\u901a\u8fc7\u628a\u6240\u6709 arrayX \u53c2\u6570\u6dfb\u52a0\u5230 arrayObject \u4e2d\u751f\u6210\u7684\u3002\u5982\u679c\u8981\u8fdb\u884c concat() \u64cd\u4f5c\u7684\u53c2\u6570\u662f\u6570\u7ec4\uff0c\u90a3\u4e48\u6dfb\u52a0\u7684\u662f\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\uff0c\u800c\u4e0d\u662f\u6570\u7ec4\u3002<\/p>\n

      \n
      \n
      Js\u4ee3\u7801 \u00a0\"\u6536\u85cf\u4ee3\u7801\"<\/a><\/div>\n<\/div>\n
        \n
      1. var<\/span>\u00a0arr\u00a0=\u00a0[“One”<\/span>,“Two”<\/span>,“Three”<\/span>];<\/li>\n
      2. <\/li>\n
      3. var<\/span>\u00a0arrtooo\u00a0=\u00a0arr.concat();<\/li>\n
      4. arrtooo[1]\u00a0=\u00a0“set\u00a0Map\u00a0To”<\/span>;<\/li>\n
      5. document.writeln(“\u6570\u7ec4\u7684\u539f\u59cb\u503c\uff1a”<\/span>\u00a0+\u00a0arr\u00a0+\u00a0“<br\u00a0\/>”<\/span>);\/\/Export:\u6570\u7ec4\u7684\u539f\u59cb\u503c\uff1aOne,Two,Three<\/span><\/li>\n
      6. document.writeln(“\u6570\u7ec4\u7684\u65b0\u503c\uff1a”<\/span>\u00a0+\u00a0arrtooo\u00a0+\u00a0“<br\u00a0\/>”<\/span>);\/\/Export:\u6570\u7ec4\u7684\u65b0\u503c\uff1aOne,set\u00a0Map\u00a0To,Three<\/span><\/li>\n<\/ol>\n<\/div>\n

        \u5b9e\u4f8b1\uff1a<\/strong><\/p>\n

        \"\"
        \n\u5b9e\u4f8b2\uff1a<\/strong><\/p>\n

        \"\"<\/p>\n

        \u4e8c.\u5bf9\u8c61\u7684\u6df1\u6d45\u62f7\u8d1d<\/strong><\/p>\n

        \n
        \n
        Js\u4ee3\u7801 \u00a0\"\u6536\u85cf\u4ee3\u7801\"<\/a><\/div>\n<\/div>\n
          \n
        1. var<\/span>\u00a0a={name:‘yy’<\/span>,age:26};<\/li>\n
        2. var<\/span>\u00a0b=new<\/span>\u00a0Object();<\/li>\n
        3. <\/li>\n
        4. b.name=a.name;<\/li>\n
        5. b.age=a.age;<\/li>\n
        6. a.name=‘xx’<\/span>;<\/li>\n
        7. console.log(b);\/\/Object\u00a0{\u00a0name=”yy”,\u00a0age=26}<\/span><\/li>\n
        8. console.log(a);\/\/Object\u00a0{\u00a0name=”xx”,\u00a0age=26}<\/span><\/li>\n<\/ol>\n<\/div>\n

          \u5c31\u662f\u628a\u5bf9\u8c61\u7684\u5c5e\u6027\u904d\u5386\u4e00\u904d\uff0c\u8d4b\u7ed9\u4e00\u4e2a\u65b0\u7684\u5bf9\u8c61\u3002<\/p>\n

          \n
          \n
          Js\u4ee3\u7801 \u00a0\"\u6536\u85cf\u4ee3\u7801\"<\/a><\/div>\n<\/div>\n
            \n
          1. var<\/span>\u00a0deepCopy=\u00a0function<\/span>(source)\u00a0{<\/li>\n
          2. var<\/span>\u00a0result={};<\/li>\n
          3. for<\/span>\u00a0(var<\/span>\u00a0key\u00a0in<\/span>\u00a0source)\u00a0{<\/li>\n
          4. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0result[key]\u00a0=\u00a0typeof<\/span>\u00a0source[key]===‘object’<\/span>?\u00a0deepCopy(source[key]):\u00a0source[key];<\/li>\n
          5. \u00a0\u00a0\u00a0}<\/li>\n
          6. \u00a0\u00a0\u00a0return<\/span>\u00a0result;<\/li>\n
          7. }<\/li>\n<\/ol>\n<\/div>\n

            \u5b9e\u4f8b1\uff1a<\/strong><\/p>\n

            \"\"<\/p>\n

            \u5b9e\u4f8b2\uff1a<\/strong><\/p>\n

            \"\"
            \n\u5f53\u7136\uff0c\u5982\u679c\u6709\u5f15\u7528JQuery\u5e93\uff0c\u90a3\u4e48\u53ef\u4ee5\u7528jQuery.extend(true, {}, oldObject);\uff0c<\/p>\n","protected":false},"excerpt":{"rendered":"

            \u4e00.\u6570\u7ec4\u7684\u6df1\u6d45\u62f7\u8d1d \u5728\u4f7f\u7528JavaScript\u5bf9\u6570\u7ec4\u8fdb\u884c\u64cd\u4f5c\u7684\u65f6\u5019\uff0c\u6211\u4eec\u7ecf\u5e38\u9700\u8981\u5c06\u6570\u7ec4\u8fdb\u884c\u5907\u4efd\uff0c\u4e8b\u5b9e\u8bc1\u660e\u5982\u679c\u53ea…<\/p>\n","protected":false},"author":2,"featured_media":228,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"footnotes":""},"categories":[38],"tags":[233],"_links":{"self":[{"href":"http:\/\/www.daliane.com\/category\/jinjiaoyou\/wp-json\/wp\/v2\/posts\/1858"}],"collection":[{"href":"http:\/\/www.daliane.com\/category\/jinjiaoyou\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.daliane.com\/category\/jinjiaoyou\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.daliane.com\/category\/jinjiaoyou\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/www.daliane.com\/category\/jinjiaoyou\/wp-json\/wp\/v2\/comments?post=1858"}],"version-history":[{"count":1,"href":"http:\/\/www.daliane.com\/category\/jinjiaoyou\/wp-json\/wp\/v2\/posts\/1858\/revisions"}],"predecessor-version":[{"id":1864,"href":"http:\/\/www.daliane.com\/category\/jinjiaoyou\/wp-json\/wp\/v2\/posts\/1858\/revisions\/1864"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/www.daliane.com\/category\/jinjiaoyou\/wp-json\/wp\/v2\/media\/228"}],"wp:attachment":[{"href":"http:\/\/www.daliane.com\/category\/jinjiaoyou\/wp-json\/wp\/v2\/media?parent=1858"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.daliane.com\/category\/jinjiaoyou\/wp-json\/wp\/v2\/categories?post=1858"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.daliane.com\/category\/jinjiaoyou\/wp-json\/wp\/v2\/tags?post=1858"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}