{"id":3359,"date":"2024-11-10T17:32:00","date_gmt":"2024-11-10T09:32:00","guid":{"rendered":"https:\/\/fwq.ai\/blog\/3359\/"},"modified":"2024-11-10T17:32:00","modified_gmt":"2024-11-10T09:32:00","slug":"js%e5%a6%82%e4%bd%95%e8%ae%be%e7%bd%ae%e8%ae%bf%e9%97%ae%e5%99%a8%e5%b1%9e%e6%80%a7","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/3359\/","title":{"rendered":"js\u5982\u4f55\u8bbe\u7f6e\u8bbf\u95ee\u5668\u5c5e\u6027"},"content":{"rendered":"<blockquote><p>\n  \u5728 javascript \u4e2d\u8bbe\u7f6e\u8bbf\u95ee\u5668\u5c5e\u6027\u7684\u6b65\u9aa4\uff1a\u4f7f\u7528 object.defineproperty() \u65b9\u6cd5\uff1aobject.defineproperty(object, propertyname, { get: getterfunction, set: setterfunction });\u5b9a\u4e49 getter \u51fd\u6570\uff1afunction getterfunction() { \/\/ \u8fd4\u56de\u5c5e\u6027\u503c };\u5b9a\u4e49 setter \u51fd\u6570\uff1afunction setterfunction(newvalue) { \/\/ \u8bbe\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/08\/2024110810361822676.jpg\" class=\"aligncenter\" title=\"js\u5982\u4f55\u8bbe\u7f6e\u8bbf\u95ee\u5668\u5c5e\u6027\u63d2\u56fe\" alt=\"js\u5982\u4f55\u8bbe\u7f6e\u8bbf\u95ee\u5668\u5c5e\u6027\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u4f7f\u7528 JavaScript \u8bbe\u7f6e\u8bbf\u95ee\u5668\u5c5e\u6027<\/strong><\/p>\n<p>\u5728 JavaScript \u4e2d\uff0c\u8bbf\u95ee\u5668\u5c5e\u6027\u662f\u4e00\u79cd\u7279\u6b8a\u7684\u5c5e\u6027\uff0c\u5b83\u5141\u8bb8\u81ea\u5b9a\u4e49\u83b7\u53d6\u548c\u8bbe\u7f6e\u64cd\u4f5c\u3002\u8bbf\u95ee\u5668\u5c5e\u6027\u7531\u4e24\u4e2a\u65b9\u6cd5\u7ec4\u6210\uff1a<\/p>\n<ul>\n<li> <strong>getter<\/strong>\uff1a\u83b7\u53d6\u5c5e\u6027\u503c\u7684\u65b9\u6cd5\u3002<\/li>\n<li> <strong>setter<\/strong>\uff1a\u8bbe\u7f6e\u5c5e\u6027\u503c\u7684\u65b9\u6cd5\u3002<\/li>\n<\/ul>\n<p><strong>\u8bbe\u7f6e\u8bbf\u95ee\u5668\u5c5e\u6027\u7684\u6b65\u9aa4\uff1a<\/strong><\/p>\n<ol>\n<li><strong>\u4f7f\u7528 Object.defineProperty() \u65b9\u6cd5\uff1a<\/strong><\/li>\n<\/ol>\n<pre>Object.defineProperty(object, propertyName, {\n  get: getterFunction,\n  set: setterFunction\n});<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u5176\u4e2d\uff1a<\/p>\n<ul>\n<li>object \u662f\u8981\u8bbe\u7f6e\u8bbf\u95ee\u5668\u5c5e\u6027\u7684\u5bf9\u8c61\u3002<\/li>\n<li>propertyName \u662f\u8bbf\u95ee\u5668\u5c5e\u6027\u7684\u540d\u79f0\u3002<\/li>\n<li>getterFunction \u662f\u83b7\u53d6\u5c5e\u6027\u503c\u7684\u65b9\u6cd5\u3002<\/li>\n<li>setterFunction \u662f\u8bbe\u7f6e\u5c5e\u6027\u503c\u7684\u65b9\u6cd5\u3002<\/li>\n<\/ul>\n<ol>\n<li> <strong>\u5b9a\u4e49 getter \u51fd\u6570\uff1a<\/strong><br \/>getter \u51fd\u6570\u8d1f\u8d23\u83b7\u53d6\u5c5e\u6027\u503c\u3002\u5b83\u7684\u8bed\u6cd5\u5982\u4e0b\uff1a<\/li>\n<\/ol>\n<pre>function getterFunction() {\n  \/\/ \u8fd4\u56de\u5c5e\u6027\u503c\n}<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<ol>\n<li> <strong>\u5b9a\u4e49 setter \u51fd\u6570\uff1a<\/strong><br \/>setter \u51fd\u6570\u8d1f\u8d23\u8bbe\u7f6e\u5c5e\u6027\u503c\u3002\u5b83\u7684\u8bed\u6cd5\u5982\u4e0b\uff1a<\/li>\n<\/ol>\n<pre>function setterFunction(newValue) {\n  \/\/ \u8bbe\u7f6e\u5c5e\u6027\u503c\n}<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p><strong>\u793a\u4f8b\uff1a<\/strong><\/p>\n<p>\u4ee5\u4e0b\u793a\u4f8b\u521b\u5efa\u4e00\u4e2a\u5177\u6709\u8bbf\u95ee\u5668\u5c5e\u6027 fullName \u7684\u5bf9\u8c61\uff1a<\/p>\n<pre>const person = {\n  firstName: \"John\",\n  lastName: \"Doe\"\n};\n\n\/\/ \u8bbe\u7f6e\u8bbf\u95ee\u5668\u5c5e\u6027\nObject.defineProperty(person, \"fullName\", {\n  get: function() {\n    return `${this.firstName} ${this.lastName}`;\n  },\n  set: function(newValue) {\n    const names = newValue.split(\" \");\n    this.firstName = names[0];\n    this.lastName = names[1];\n  }\n});<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u73b0\u5728\uff0c\u53ef\u4ee5\u901a\u8fc7 person.fullName \u83b7\u53d6\u5168\u540d\uff0c\u5e76\u4f7f\u7528 person.fullName = &#8220;Jane Smith&#8221; \u8bbe\u7f6e\u5168\u540d\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fjs\u5982\u4f55\u8bbe\u7f6e\u8bbf\u95ee\u5668\u5c5e\u6027\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728 javascript \u4e2d\u8bbe\u7f6e\u8bbf\u95ee\u5668\u5c5e\u6027\u7684\u6b65\u9aa4\uff1a\u4f7f\u7528 object.defineproperty() \u65b9\u6cd5\uff1aobject.defineproperty(object, propertyname, { get: getterfunction, set: setterfunction });\u5b9a\u4e49 getter \u51fd\u6570\uff1afunction getterfunction() { \/\/ \u8fd4\u56de\u5c5e\u6027\u503c };\u5b9a\u4e49 setter \u51fd\u6570\uff1afunction setterfunction(newvalue) { \/\/ \u8bbe \u5982\u4f55\u4f7f\u7528 JavaScript \u8bbe\u7f6e\u8bbf\u95ee\u5668\u5c5e\u6027 \u5728 JavaScript \u4e2d\uff0c\u8bbf\u95ee\u5668\u5c5e\u6027\u662f\u4e00\u79cd\u7279\u6b8a\u7684\u5c5e\u6027\uff0c\u5b83\u5141\u8bb8\u81ea\u5b9a\u4e49\u83b7\u53d6\u548c\u8bbe\u7f6e\u64cd\u4f5c\u3002\u8bbf\u95ee\u5668\u5c5e\u6027\u7531\u4e24\u4e2a\u65b9\u6cd5\u7ec4\u6210\uff1a getter\uff1a\u83b7\u53d6\u5c5e\u6027\u503c\u7684\u65b9\u6cd5\u3002 setter\uff1a\u8bbe\u7f6e\u5c5e\u6027\u503c\u7684\u65b9\u6cd5\u3002 \u8bbe\u7f6e\u8bbf\u95ee\u5668\u5c5e\u6027\u7684\u6b65\u9aa4\uff1a \u4f7f\u7528 Object.defineProperty() \u65b9\u6cd5\uff1a Object.defineProperty(object, propertyName, { get: getterFunction, set: setterFunction }); \u767b\u5f55\u540e\u590d\u5236 \u5176\u4e2d\uff1a object \u662f\u8981\u8bbe\u7f6e\u8bbf\u95ee\u5668\u5c5e\u6027\u7684\u5bf9\u8c61\u3002 propertyName \u662f\u8bbf\u95ee\u5668\u5c5e\u6027\u7684\u540d\u79f0\u3002 getterFunction \u662f\u83b7\u53d6\u5c5e\u6027\u503c\u7684\u65b9\u6cd5\u3002 setterFunction \u662f\u8bbe\u7f6e\u5c5e\u6027\u503c\u7684\u65b9\u6cd5\u3002 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-3359","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/3359","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=3359"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/3359\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=3359"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=3359"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=3359"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}