{"id":129,"date":"2014-09-01T15:28:28","date_gmt":"2014-09-01T07:28:28","guid":{"rendered":"http:\/\/yusemo.com\/?p=129"},"modified":"2015-05-21T21:25:56","modified_gmt":"2015-05-21T13:25:56","slug":"arguments%e5%af%b9%e8%b1%a1%e8%bd%ac%e6%8d%a2%e4%b8%ba%e6%95%b0%e7%bb%84","status":"publish","type":"post","link":"https:\/\/yusemo.com\/?p=129","title":{"rendered":"arguments\u5bf9\u8c61\u8f6c\u6362\u4e3a\u6570\u7ec4"},"content":{"rendered":"

\u51fd\u6570\u5185\u7684arguments \u5bf9\u8c61\uff0c\u6709\u4eba\u79f0\u4e4b\u4e3a\u201c\u7c7b\u6570\u7ec4\u201d\u5bf9\u8c61\uff0c\u56e0\u4e3a\u5b83\u5177\u6709\u6570\u7ec4\u7684\u4e00\u4e9b\u7279\u6027\uff1a\u62e5\u6709length \u5c5e\u6027\u3001\u5e76\u4e14\u7528\u6570\u5b57\u7d22\u5f15\u5b58\u653e\u7740\u53c2\u6570\u4ee5\u4fbf\u8bbf\u95ee\uff0c\u53ef\u5927\u5bb6\u90fd\u77e5\u9053\u5176\u5b9e\u5b83\u5e76\u4e0d\u662f\u6570\u7ec4\u3002<\/p>\n

\u6709\u7684\u65f6\u5019\u9700\u8981\u5c06\u53c2\u6570\u5217\u8868\u770b\u4f5c\u4e00\u6570\u7ec4\uff0c\u4ee5\u4fbf\u4f7f\u7528\u6570\u7ec4\u7684\u4e00\u4e9b\u65b9\u6cd5\uff08\u5982concat, splice \u7b49\uff09\u8fdb\u884c\u64cd\u4f5c\uff0c\u8fd9\u5c31\u8981\u60f3\u529e\u6cd5\u505a\u4e00\u4e2a\u8f6c\u6362\uff0c<\/p>\n

(function() {<\/p>\n

aArguments = Array.prototype.slice.apply(arguments);<\/p>\n

})(1,2,3);<\/p>\n

\u00a0<\/span>\u4e5f\u53ef\u4ee5\u7b80\u5355\u5199\u6210<\/p>\n

(function() {
\nvar aArguments = [].slice.apply(arguments);<\/p>\n

})(1,2,3);<\/p>\n

 <\/p>\n

\u6b64\u65f6aArguments \u5df2\u7ecf\u662f\u53c2\u6570\u6570\u7ec4[1, 2, 3] \u4e86\u3002<\/p>\n

slice \u65b9\u6cd5\u786e\u5b9e\u53ef\u7528\u4e8e\u62f7\u8d1d\u6570\u7ec4\uff0c\u4f46\u5b83\u662f\u5c5e\u4e8e\u6570\u7ec4\u7684\u65b9\u6cd5\uff0c\u76f4\u63a5arguments.slice() \u80af\u5b9a\u662f\u4e0d\u884c\u7684\u3002\u4e0a\u9762\u7684\u65b9\u6cd5\u5219\u6bd4\u8f83\u5de7\u5999\uff0c\u5b83\u5229\u7528\u4e86arguments \u5bf9\u8c61\u7684\u90a3\u4e9b\u6570\u7ec4\u7279\u6027\uff0c\u7136\u540e\u901a\u8fc7apply \u4f7f\u81ea\u8eab\u8fd0\u7528\u4e8e\u6570\u7ec4\u7684slice \u65b9\u6cd5\uff0c\u4ee5\u8fbe\u5230\u8f6c\u6362\u4e3a\u6570\u7ec4\u7c7b\u578b\u7684\u6548\u679c\u3002<\/p>\n

\u8865\u5145\uff1a<\/span>\u5728\u8fd9\u91cc\u4f7f\u7528\u4e86<\/p>\n

1
<\/div><\/td>
<span class="token punctuation">[<\/span><span class="token punctuation">]<\/span><span class="token punctuation">.<\/span>forEach<span class="token punctuation">.<\/span>call<\/div><\/td><\/tr><\/tbody><\/table><\/div>\n

\u800c\u4e0d\u662f<\/p>\n

1
<\/div><\/td>
Array<span class="token punctuation">.<\/span>prototype<span class="token punctuation">.<\/span>forEach<span class="token punctuation">.<\/span>call<\/div><\/td><\/tr><\/tbody><\/table><\/div>\n

\uff0c\u4e8c\u8005\u7b49\u4ef7\uff0c\u4f46\u662f\u524d\u8005\u53ef\u4ee5\u8282\u7701\u51e0\u4e2a\u5b57\u8282\u3002<\/p>\n

\u4e0b\u9762\u4e00\u4e2a\u5c0f\u4f8b\u5b50\uff1a<\/p>\n

\u4f7f\u7528mySort()\u80fd\u5c06\u4f20\u5165\u7684\u53c2\u6570\u6309\u7167\u4ece\u5c0f\u5230\u5927\u7684\u987a\u5e8f\u663e\u793a\u51fa\u6765<\/p>\n

function mySort(){<\/p>\n

var args=new Array(); \u00a0 \/\/\u4f7f\u7528\u6570\u7ec4\u4f5c\u4e3a\u53c2\u6570\u5b58\u50a8\u5bb9\u5668<\/p>\n

\/\/\u8865\u5145\u4ee3\u7801<\/p>\n

return args;<\/p>\n

}<\/p>\n

var result=mySort(50,11,16,24,88,57,…,10); \/\/\u4f20\u5165\u7684\u53c2\u6570\u4e2a\u6570\u4e0d\u5b9a<\/p>\n

console.log(result);<\/p>\n

 <\/p>\n

\u4e0b\u9762\u662f\u8865\u5145\u4ee3\u7801\uff1a<\/p>\n

\/\/ \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u65b9\u6cd51<\/p>\n

\/\/ \u00a0 \u00a0 \u00a0 \u00a0 \u00a0args=args.slice.call(arguments).sort(function(a,b){return a-b})<\/p>\n

\/\/ \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u65b9\u6cd52<\/p>\n

\/\/ \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0for(var i=0;i<arguments.length;i++) {<\/p>\n

\/\/ \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0args[i]=arguments[i];<\/p>\n

\/\/ \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0}<\/p>\n

\/\/ \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 args.sort(function(n1,n2){<\/p>\n

\/\/ \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0return n1-n2;<\/p>\n

\/\/ \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0});<\/p>\n

2014\u5e7412\u6708\u66f4\u65b0\uff1a<\/span><\/span><\/p>\n

http:\/\/blog.csdn.net\/myhahaxiao\/article\/details\/6952321<\/p>\n

\u6df1\u5165\u89e3\u6790apply\u548ccall\u7684\u533a\u522b\u548c\u7528\u6cd5<\/strong><\/p>\n

\u6211\u5728\u4e00\u5f00\u59cb\u770b\u5230javascript\u7684\u51fd\u6570apply\u548ccall\u65f6,\u975e\u5e38\u7684\u6a21\u7cca,\u770b\u4e5f\u770b\u4e0d\u61c2,\u6700\u8fd1\u5728\u7f51\u4e0a\u770b\u5230\u4e00\u4e9b\u6587\u7ae0\u5bf9apply\u65b9\u6cd5\u548ccall\u7684\u4e00\u4e9b\u793a\u4f8b,\u603b\u7b97\u662f\u770b\u7684\u6709\u70b9\u7709\u76ee\u4e86,\u5728\u8fd9\u91cc\u6211\u505a\u5982\u4e0b\u7b14\u8bb0,\u5e0c\u671b\u548c\u5927\u5bb6\u5206\u4eab..\u00a0 \u5982\u6709\u4ec0\u4e48\u4e0d\u5bf9\u7684\u6216\u8005\u8bf4\u6cd5\u4e0d\u660e\u786e\u7684\u5730\u65b9\u5e0c\u671b\u8bfb\u8005\u591a\u591a\u63d0\u4e00\u4e9b\u610f\u89c1,\u4ee5\u4fbf\u5171\u540c\u63d0\u9ad8..<\/p>\n

\u4e3b\u8981\u6211\u662f\u8981\u89e3\u51b3\u4e00\u4e0b\u51e0\u4e2a\u95ee\u9898:<\/p>\n

1.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0apply\u548ccall\u7684\u533a\u522b\u5728\u54ea\u91cc<\/strong><\/p>\n

2.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u4ec0\u4e48\u60c5\u51b5\u4e0b\u7528apply,\u4ec0\u4e48\u60c5\u51b5\u4e0b\u7528call<\/strong><\/p>\n

3.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0apply\u7684\u5176\u4ed6\u5de7\u5999\u7528\u6cd5\uff08\u4e00\u822c\u5728\u4ec0\u4e48\u60c5\u51b5\u4e0b\u53ef\u4ee5\u4f7f\u7528apply\uff09<\/strong><\/p><\/blockquote>\n

\u6211\u9996\u5148\u4ece\u7f51\u4e0a\u67e5\u5230\u5173\u4e8eapply\u548ccall\u7684\u5b9a\u4e49,\u7136\u540e\u7528\u793a\u4f8b\u6765\u89e3\u91ca\u8fd9\u4e24\u4e2a\u65b9\u6cd5\u7684\u610f\u601d\u548c\u5982\u4f55\u53bb\u7528.<\/p>\n

apply:\u65b9\u6cd5\u80fd\u52ab\u6301\u53e6\u5916\u4e00\u4e2a\u5bf9\u8c61\u7684\u65b9\u6cd5\uff0c\u7ee7\u627f\u53e6\u5916\u4e00\u4e2a\u5bf9\u8c61\u7684\u5c5e\u6027.<\/p>\n

\u00a0Function.apply(obj,args)\u65b9\u6cd5\u80fd\u63a5\u6536\u4e24\u4e2a\u53c2\u6570
\nobj\uff1a\u8fd9\u4e2a\u5bf9\u8c61\u5c06\u4ee3\u66ffFunction\u7c7b\u91ccthis\u5bf9\u8c61
\nargs\uff1a\u8fd9\u4e2a\u662f\u6570\u7ec4\uff0c\u5b83\u5c06\u4f5c\u4e3a\u53c2\u6570\u4f20\u7ed9Function\uff08args–>arguments\uff09<\/p><\/blockquote>\n

call:\u548capply\u7684\u610f\u601d\u4e00\u6837,\u53ea\u4e0d\u8fc7\u662f\u53c2\u6570\u5217\u8868\u4e0d\u4e00\u6837.<\/p>\n

\u00a0Function.call(obj,[param1[,param2[,\u2026[,paramN]]]])
\nobj\uff1a\u8fd9\u4e2a\u5bf9\u8c61\u5c06\u4ee3\u66ffFunction\u7c7b\u91ccthis\u5bf9\u8c61
\nparams\uff1a\u8fd9\u4e2a\u662f\u4e00\u4e2a\u53c2\u6570\u5217\u8868<\/p><\/blockquote>\n

1.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0apply\u793a\u4f8b:<\/p>\n

\n
<\/div>\n
    \n
  1. <script\u00a0type=“text\/javascript”<\/span>><\/li>\n
  2. \u00a0\u00a0\u00a0\u00a0\/*\u5b9a\u4e49\u4e00\u4e2a\u4eba\u7c7b*\/<\/span><\/li>\n
  3. \u00a0\u00a0\u00a0\u00a0function<\/span>\u00a0Person(name,age)<\/li>\n
  4. \u00a0\u00a0\u00a0\u00a0{<\/li>\n
  5. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0this<\/span>.name=name;<\/li>\n
  6. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0this<\/span>.age=age;<\/li>\n
  7. \u00a0\u00a0\u00a0\u00a0}<\/li>\n
  8. \u00a0\u00a0\u00a0\u00a0\/*\u5b9a\u4e49\u4e00\u4e2a\u5b66\u751f\u7c7b*\/<\/span><\/li>\n
  9. \u00a0\u00a0\u00a0\u00a0function Student(name,age,grade)<\/li>\n
  10. \u00a0\u00a0\u00a0\u00a0{<\/li>\n
  11. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Person.apply(this<\/span>,arguments);<\/li>\n
  12. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0this<\/span>.grade=grade;<\/li>\n
  13. \u00a0\u00a0\u00a0\u00a0}<\/li>\n
  14. \u00a0\u00a0\u00a0\u00a0\/\/\u521b\u5efa\u4e00\u4e2a\u5b66\u751f\u7c7b<\/span><\/li>\n
  15. \u00a0\u00a0\u00a0\u00a0var<\/span>\u00a0student=new<\/span>\u00a0Student(“zhangsan”<\/span>,21,“\u4e00\u5e74\u7ea7”<\/span>);<\/li>\n
  16. \u00a0\u00a0\u00a0\u00a0\/\/\u6d4b\u8bd5<\/span><\/li>\n
  17. \u00a0\u00a0\u00a0\u00a0alert(“name:”<\/span>+student.name+“\\n”<\/span>+“age:”<\/span>+student.age+“\\n”<\/span>+“grade:”<\/span>+student.grade);<\/li>\n
  18. \u00a0\u00a0\u00a0\u00a0\/\/\u5927\u5bb6\u53ef\u4ee5\u770b\u5230\u6d4b\u8bd5\u7ed3\u679cname:zhangsan\u00a0age:21\u00a0\u00a0grade:\u4e00\u5e74\u7ea7<\/span><\/li>\n
  19. \u00a0\u00a0\u00a0\u00a0\/\/\u5b66\u751f\u7c7b\u91cc\u9762\u6211\u6ca1\u6709\u7ed9name\u548cage\u5c5e\u6027\u8d4b\u503c\u554a,\u4e3a\u4ec0\u4e48\u53c8\u5b58\u5728\u8fd9\u4e24\u4e2a\u5c5e\u6027\u7684\u503c\u5462,\u8fd9\u4e2a\u5c31\u662fapply\u7684\u795e\u5947\u4e4b\u5904.<\/span><\/li>\n
  20. <\/script><\/li>\n<\/ol>\n<\/div>\n

     <\/p>\n

    \u5206\u6790: Person.apply(this,arguments);<\/strong><\/p>\n

    this:\u5728\u521b\u5efa\u5bf9\u8c61\u5728\u8fd9\u4e2a\u65f6\u5019\u4ee3\u8868\u7684\u662fstudent<\/strong><\/p>\n

    arguments:\u662f\u4e00\u4e2a\u6570\u7ec4,\u4e5f\u5c31\u662f[\u201czhangsan\u201d,\u201d21\u201d,\u201d\u4e00\u5e74\u7ea7\u201d];<\/strong><\/p>\n

    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u4e5f\u5c31\u662f\u901a\u4fd7\u4e00\u70b9\u8bb2\u5c31\u662f:\u7528student\u53bb\u6267\u884cPerson\u8fd9\u4e2a\u7c7b\u91cc\u9762\u7684\u5185\u5bb9,\u5728Person\u8fd9\u4e2a\u7c7b\u91cc\u9762\u5b58\u5728this.name\u7b49\u4e4b\u7c7b\u7684\u8bed\u53e5,\u8fd9\u6837\u5c31\u5c06\u5c5e\u6027\u521b\u5efa\u5230\u4e86student\u5bf9\u8c61\u91cc\u9762<\/strong><\/p>\n

    \u00a0<\/strong><\/p>\n

    2.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0call\u793a\u4f8b<\/p>\n

    \u5728Studen\u51fd\u6570\u91cc\u9762\u53ef\u4ee5\u5c06apply\u4e2d\u4fee\u6539\u6210\u5982\u4e0b:<\/p>\n

    Person.call(this,name,age);<\/p>\n

    \u8fd9\u6837\u5c31ok\u4e86<\/p>\n

    3.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u4ec0\u4e48\u60c5\u51b5\u4e0b\u7528apply,\u4ec0\u4e48\u60c5\u51b5\u4e0b\u7528call<\/p>\n

    \u5728\u7ed9\u5bf9\u8c61\u53c2\u6570\u7684\u60c5\u51b5\u4e0b,\u5982\u679c\u53c2\u6570\u7684\u5f62\u5f0f\u662f\u6570\u7ec4\u7684\u65f6\u5019,\u6bd4\u5982apply\u793a\u4f8b\u91cc\u9762\u4f20\u9012\u4e86\u53c2\u6570arguments,\u8fd9\u4e2a\u53c2\u6570\u662f\u6570\u7ec4\u7c7b\u578b,\u5e76\u4e14\u5728\u8c03\u7528Person\u7684\u65f6\u5019\u53c2\u6570\u7684\u5217\u8868\u662f\u5bf9\u5e94\u4e00\u81f4\u7684(\u4e5f\u5c31\u662fPerson\u548cStudent\u7684\u53c2\u6570\u5217\u8868\u524d\u4e24\u4f4d\u662f\u4e00\u81f4\u7684) \u5c31\u53ef\u4ee5\u91c7\u7528 apply , \u5982\u679c\u6211\u7684Person\u7684\u53c2\u6570\u5217\u8868\u662f\u8fd9\u6837\u7684(age,name),\u800cStudent\u7684\u53c2\u6570\u5217\u8868\u662f(name,age,grade),\u8fd9\u6837\u5c31\u53ef\u4ee5\u7528call\u6765\u5b9e\u73b0\u4e86,\u4e5f\u5c31\u662f\u76f4\u63a5\u6307\u5b9a\u53c2\u6570\u5217\u8868\u5bf9\u5e94\u503c\u7684\u4f4d\u7f6e(Person.call(this,age,name,grade));<\/p>\n

    4.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0apply\u7684\u4e00\u4e9b\u5176\u4ed6\u5de7\u5999\u7528\u6cd5<\/p>\n

    \u7ec6\u5fc3\u7684\u4eba\u53ef\u80fd\u5df2\u7ecf\u5bdf\u89c9\u5230,\u5728\u6211\u8c03\u7528apply\u65b9\u6cd5\u7684\u65f6\u5019,\u7b2c\u4e00\u4e2a\u53c2\u6570\u662f\u5bf9\u8c61(this), \u7b2c\u4e8c\u4e2a\u53c2\u6570\u662f\u4e00\u4e2a\u6570\u7ec4\u96c6\u5408, \u5728\u8c03\u7528Person\u7684\u65f6\u5019,\u4ed6\u9700\u8981\u7684\u4e0d\u662f\u4e00\u4e2a\u6570\u7ec4,\u4f46\u662f\u4e3a\u4ec0\u4e48\u4ed6\u7ed9\u6211\u4e00\u4e2a\u6570\u7ec4\u6211\u4ecd\u7136\u53ef\u4ee5\u5c06\u6570\u7ec4\u89e3\u6790\u4e3a\u4e00\u4e2a\u4e00\u4e2a\u7684\u53c2\u6570<\/strong>,\u8fd9\u4e2a\u5c31\u662fapply\u7684\u4e00\u4e2a\u5de7\u5999\u7684\u7528\u5904,\u53ef\u4ee5\u5c06\u4e00\u4e2a\u6570\u7ec4\u9ed8\u8ba4\u7684\u8f6c\u6362\u4e3a\u4e00\u4e2a\u53c2\u6570\u5217\u8868([param1,param2,param3] \u8f6c\u6362\u4e3a param1,param2,param3) \u8fd9\u4e2a\u5982\u679c\u8ba9\u6211\u4eec\u7528\u7a0b\u5e8f\u6765\u5b9e\u73b0\u5c06\u6570\u7ec4\u7684\u6bcf\u4e00\u4e2a\u9879,\u6765\u88c5\u6362\u4e3a\u53c2\u6570\u7684\u5217\u8868,\u53ef\u80fd\u90fd\u5f97\u8d39\u4e00\u4f1a\u529f\u592b,\u501f\u52a9apply\u7684\u8fd9\u70b9\u7279\u6027,\u6240\u4ee5\u5c31\u6709\u4e86\u4ee5\u4e0b\u9ad8\u6548\u7387\u7684\u65b9\u6cd5:<\/p>\n

     <\/p>\n

    a)\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Math.max \u53ef\u4ee5\u5b9e\u73b0\u5f97\u5230\u6570\u7ec4\u4e2d\u6700\u5927\u7684\u4e00\u9879<\/p>\n

    \u56e0\u4e3aMath.max \u53c2\u6570\u91cc\u9762\u4e0d\u652f\u6301Math.max([param1,param2]) \u4e5f\u5c31\u662f\u6570\u7ec4<\/p>\n

    \u4f46\u662f\u5b83\u652f\u6301Math.max(param1,param2,param3\u2026),\u6240\u4ee5\u53ef\u4ee5\u6839\u636e\u521a\u624dapply\u7684\u90a3\u4e2a\u7279\u70b9\u6765\u89e3\u51b3 var max=Math.max.apply(null,array),\u8fd9\u6837\u8f7b\u6613\u7684\u53ef\u4ee5\u5f97\u5230\u4e00\u4e2a\u6570\u7ec4\u4e2d\u6700\u5927\u7684\u4e00\u9879(apply\u4f1a\u5c06\u4e00\u4e2a\u6570\u7ec4\u88c5\u6362\u4e3a\u4e00\u4e2a\u53c2\u6570\u63a5\u4e00\u4e2a\u53c2\u6570\u7684\u4f20\u9012\u7ed9\u65b9\u6cd5<\/strong>)<\/p>\n

    \u8fd9\u5757\u5728\u8c03\u7528\u7684\u65f6\u5019\u7b2c\u4e00\u4e2a\u53c2\u6570\u7ed9\u4e86\u4e00\u4e2anull,\u8fd9\u4e2a\u662f\u56e0\u4e3a\u6ca1\u6709\u5bf9\u8c61\u53bb\u8c03\u7528\u8fd9\u4e2a\u65b9\u6cd5,\u6211\u53ea\u9700\u8981\u7528\u8fd9\u4e2a\u65b9\u6cd5\u5e2e\u6211\u8fd0\u7b97,\u5f97\u5230\u8fd4\u56de\u7684\u7ed3\u679c\u5c31\u884c,.\u6240\u4ee5\u76f4\u63a5\u4f20\u9012\u4e86\u4e00\u4e2anull\u8fc7\u53bb<\/p>\n

    b)\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Math.min\u00a0 \u53ef\u4ee5\u5b9e\u73b0\u5f97\u5230\u6570\u7ec4\u4e2d\u6700\u5c0f\u7684\u4e00\u9879<\/p>\n

    \u540c\u6837\u548c max\u662f\u4e00\u4e2a\u601d\u60f3 var min=Math.min.apply(null,array);<\/p>\n

    c)\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Array.prototype.push \u53ef\u4ee5\u5b9e\u73b0\u4e24\u4e2a\u6570\u7ec4\u5408\u5e76<\/p>\n

    \u540c\u6837push\u65b9\u6cd5\u6ca1\u6709\u63d0\u4f9bpush\u4e00\u4e2a\u6570\u7ec4,\u4f46\u662f\u5b83\u63d0\u4f9b\u4e86push(param1,param,\u2026paramN) \u6240\u4ee5\u540c\u6837\u4e5f\u53ef\u4ee5\u901a\u8fc7apply\u6765\u88c5\u6362\u4e00\u4e0b\u8fd9\u4e2a\u6570\u7ec4,\u5373:<\/p>\n

    \n
    <\/div>\n
      \n
    1. vararr1=new<\/span>\u00a0Array(“1”<\/span>,“2”<\/span>,“3”<\/span>);<\/li>\n
    2. <\/li>\n
    3. vararr2=new<\/span>\u00a0Array(“4”<\/span>,“5”<\/span>,“6”<\/span>);<\/li>\n
    4. <\/li>\n
    5. Array.prototype.push.apply(arr1,arr2);<\/li>\n<\/ol>\n<\/div>\n

       <\/p>\n

      \u4e5f\u53ef\u4ee5\u8fd9\u6837\u7406\u89e3,arr1\u8c03\u7528\u4e86push\u65b9\u6cd5,\u53c2\u6570\u662f\u901a\u8fc7apply\u5c06\u6570\u7ec4\u88c5\u6362\u4e3a\u53c2\u6570\u5217\u8868\u7684\u96c6\u5408.<\/p>\n

      \u901a\u5e38\u5728\u4ec0\u4e48\u60c5\u51b5\u4e0b,\u53ef\u4ee5\u4f7f\u7528apply\u7c7b\u4f3cMath.min\u7b49\u4e4b\u7c7b\u7684\u7279\u6b8a\u7528\u6cd5:<\/strong><\/p>\n

      \u4e00\u822c\u5728\u76ee\u6807\u51fd\u6570\u53ea\u9700\u8981n\u4e2a\u53c2\u6570\u5217\u8868,\u800c\u4e0d\u63a5\u6536\u4e00\u4e2a\u6570\u7ec4\u7684\u5f62\u5f0f\uff08[param1[,param2[,\u2026[,paramN]]]]\uff09,\u53ef\u4ee5\u901a\u8fc7apply\u7684\u65b9\u5f0f\u5de7\u5999\u5730\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898!<\/p><\/blockquote>\n

      5.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u603b\u7ed3:<\/p>\n

      \u4e00\u5f00\u59cb\u6211\u5bf9apply \u975e\u5e38\u7684\u4e0d\u61c2,\u6700\u540e\u591a\u770b\u4e86\u51e0\u904d,\u81ea\u5df1\u591a\u6572\u4e86\u51e0\u904d\u4ee3\u7801,\u624d\u660e\u767d\u4e86\u4e2d\u95f4\u7684\u9053\u7406,\u6240\u4ee5,\u4e0d\u7ba1\u505a\u4ec0\u4e48\u4e8b\u60c5,\u53ea\u8981\u81ea\u5df1\u80af\u52a8\u8111\u5b50,\u80af\u52a8\u624b\u6572\u4ee3\u7801,\u8fd9\u6837\u4e00\u4e2a\u6280\u672f\u5c31\u4f1a\u638c\u63e1\u2026<\/p>\n

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      \u51fd\u6570\u5185\u7684arguments \u5bf9\u8c61\uff0c\u6709\u4eba\u79f0\u4e4b\u4e3a\u201c\u7c7b\u6570\u7ec4\u201d\u5bf9\u8c61\uff0c\u56e0\u4e3a\u5b83\u5177\u6709\u6570\u7ec4\u7684\u4e00\u4e9b\u7279\u6027\uff1a\u62e5\u6709length \u5c5e\u6027\u3001 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[],"_links":{"self":[{"href":"https:\/\/yusemo.com\/index.php?rest_route=\/wp\/v2\/posts\/129"}],"collection":[{"href":"https:\/\/yusemo.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/yusemo.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/yusemo.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/yusemo.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=129"}],"version-history":[{"count":10,"href":"https:\/\/yusemo.com\/index.php?rest_route=\/wp\/v2\/posts\/129\/revisions"}],"predecessor-version":[{"id":145,"href":"https:\/\/yusemo.com\/index.php?rest_route=\/wp\/v2\/posts\/129\/revisions\/145"}],"wp:attachment":[{"href":"https:\/\/yusemo.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=129"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/yusemo.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=129"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/yusemo.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=129"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}