{"id":11708,"date":"2023-11-28T22:31:08","date_gmt":"2023-11-28T14:31:08","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=11708"},"modified":"2023-11-30T18:44:20","modified_gmt":"2023-11-30T10:44:20","slug":"javascript-zhong-dui-xiang-deprototype-yuan-xing-s","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/11\/28\/javascript-zhong-dui-xiang-deprototype-yuan-xing-s\/","title":{"rendered":"JavaScript \u4e2d\u5bf9\u8c61\u7684 prototype(\u539f\u578b)\u662f\u4ec0\u4e48\uff1f"},"content":{"rendered":"

\u5728 JavaScript \u4e2d\uff0c\u6bcf\u4e2a\u5bf9\u8c61\u90fd\u6709\u4e00\u4e2a\u5c5e\u6027\u79f0\u4e3a prototype<\/code>\uff08\u539f\u578b\uff09\uff0c\u5b83\u662f\u5bf9\u8c61\u7684\u4e00\u4e2a\u5c5e\u6027\uff0c\u7528\u4e8e\u5b9e\u73b0\u5bf9\u8c61\u4e4b\u95f4\u7684\u7ee7\u627f\u5173\u7cfb\u3002<\/p>\n

<\/span><\/a>prototype<\/code> \u5c5e\u6027\u7684\u4f5c\u7528\uff1a<\/h3>\n
    \n
  1. \n

    \u5b9e\u73b0\u7ee7\u627f\uff1a<\/strong> prototype<\/code> \u5141\u8bb8\u5bf9\u8c61\u7ee7\u627f\u53e6\u4e00\u4e2a\u5bf9\u8c61\u7684\u5c5e\u6027\u548c\u65b9\u6cd5\u3002\u5f53\u8bbf\u95ee\u5bf9\u8c61\u7684\u5c5e\u6027\u6216\u65b9\u6cd5\u65f6\uff0c\u5982\u679c\u5bf9\u8c61\u672c\u8eab\u6ca1\u6709\u8be5\u5c5e\u6027\u6216\u65b9\u6cd5\uff0c\u5b83\u4f1a\u53bb\u5176 prototype<\/code> \u4e2d\u67e5\u627e\uff0c\u5373\u5176\u539f\u578b\u94fe\u4e0a\u662f\u5426\u6709\u8be5\u5c5e\u6027\u6216\u65b9\u6cd5\u3002<\/p>\n<\/li>\n

  2. \n

    \u539f\u578b\u94fe\uff08Prototype Chain\uff09\uff1a<\/strong> \u5982\u679c\u5bf9\u8c61\u7684 prototype<\/code> \u4e2d\u5b58\u5728\u4e00\u4e2a\u5f15\u7528\uff0c\u4f46\u8be5\u5f15\u7528\u7684 prototype<\/code> \u53c8\u6307\u5411\u53e6\u4e00\u4e2a\u5bf9\u8c61\uff0c\u8fd9\u79cd\u94fe\u5f0f\u7ed3\u6784\u5f62\u6210\u4e86\u539f\u578b\u94fe\u3002JavaScript \u4e2d\u7684\u5bf9\u8c61\u5728\u67e5\u627e\u5c5e\u6027\u6216\u65b9\u6cd5\u65f6\u4f1a\u6cbf\u7740\u539f\u578b\u94fe\u5411\u4e0a\u67e5\u627e\uff0c\u76f4\u5230\u627e\u5230\u6216\u8005\u5230\u8fbe\u539f\u578b\u94fe\u7684\u672b\u7aef\uff08null<\/code>\uff09\u3002<\/p>\n<\/li>\n<\/ol>\n

    <\/span><\/a>\u793a\u4f8b\uff1a<\/h3>\n
    \/\/ \u521b\u5efa\u4e00\u4e2a\u5bf9\u8c61 person\nfunction Person(name) {\n  this.name = name;\n}\n\n\/\/ \u4e3a Person \u7684 prototype \u6dfb\u52a0\u65b9\u6cd5\nPerson.prototype.greet = function() {\n  return 'Hello, ' + this.name;\n};\n\n\/\/ \u521b\u5efa person1 \u548c person2 \u5b9e\u4f8b\nvar person1 = new Person('Alice');\nvar person2 = new Person('Bob');\n\n\/\/ person1 \u548c person2 \u7ee7\u627f\u4e86 Person \u7684 prototype \u65b9\u6cd5\nconsole.log(person1.greet()); \/\/ \u8f93\u51fa\uff1aHello, Alice\nconsole.log(person2.greet()); \/\/ \u8f93\u51fa\uff1aHello, Bob\n<\/code><\/pre>\n
    \u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0cPerson<\/code> \u662f\u4e00\u4e2a\u6784\u9020\u51fd\u6570\uff0cPerson.prototype<\/code> \u662f\u4e00\u4e2a\u5bf9\u8c61\uff0c\u5b83\u5305\u542b\u4e86\u6240\u6709 Person<\/code> \u5b9e\u4f8b\u5171\u4eab\u7684\u5c5e\u6027\u548c\u65b9\u6cd5\u3002\u5f53\u521b\u5efa person1<\/code> \u548c person2<\/code> \u5b9e\u4f8b\u65f6\uff0c\u5b83\u4eec\u7ee7\u627f\u4e86 Person.prototype<\/code> \u4e0a\u7684 greet()<\/code> \u65b9\u6cd5\u3002<\/p>\n
    prototype<\/code> \u5c5e\u6027\u5141\u8bb8 JavaScript \u5bf9\u8c61\u5b9e\u73b0\u4e86\u57fa\u4e8e\u539f\u578b\u7684\u7ee7\u627f\u673a\u5236\uff0c\u8fd9\u79cd\u673a\u5236\u662f JavaScript \u4e2d\u5bf9\u8c61\u95f4\u5173\u7cfb\u7684\u57fa\u7840\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
    \u5728 JavaScript \u4e2d\uff0c\u6bcf\u4e2a\u5bf9\u8c61\u90fd\u6709\u4e00\u4e2a\u5c5e\u6027\u79f0\u4e3a prototype\uff08\u539f\u578b\uff09\uff0c\u5b83\u662f\u5bf9\u8c61\u7684\u4e00\u4e2a\u5c5e\u6027\uff0c\u7528\u4e8e\u5b9e […]<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[115],"tags":[],"class_list":["post-11708","post","type-post","status-publish","format-standard","hentry","category-javascript"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/11708","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/comments?post=11708"}],"version-history":[{"count":2,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/11708\/revisions"}],"predecessor-version":[{"id":13648,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/11708\/revisions\/13648"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=11708"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=11708"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=11708"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}