{"id":343,"date":"2024-12-19T00:19:06","date_gmt":"2024-12-18T16:19:06","guid":{"rendered":"https:\/\/www.laixuexila.com\/?p=343"},"modified":"2024-12-19T00:22:05","modified_gmt":"2024-12-18T16:22:05","slug":"javascript-%e4%b8%ad%e5%af%b9%e8%b1%a1%e5%92%8c%e6%95%b0%e7%bb%84%e7%9a%84%e5%b1%95%e5%bc%80%e8%bf%90%e7%ae%97%e7%ac%a6","status":"publish","type":"post","link":"https:\/\/www.laixuexila.com\/index.php\/2024\/12\/19\/javascript-%e4%b8%ad%e5%af%b9%e8%b1%a1%e5%92%8c%e6%95%b0%e7%bb%84%e7%9a%84%e5%b1%95%e5%bc%80%e8%bf%90%e7%ae%97%e7%ac%a6\/","title":{"rendered":"JavaScript \u4e2d\u5bf9\u8c61\u548c\u6570\u7ec4\u7684\u5c55\u5f00\u8fd0\u7b97\u7b26"},"content":{"rendered":"\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\u5728 JavaScript \u4e2d\uff0c<strong>\u5c55\u5f00\u8fd0\u7b97\u7b26\uff08spread operator\uff09<\/strong> \u662f\u4e00\u4e2a\u975e\u5e38\u6709\u7528\u7684\u8bed\u6cd5\uff0c\u5b83\u7528 <code>...<\/code> \u8868\u793a\uff0c\u53ef\u4ee5\u7528\u4e8e\u5bf9\u8c61\u548c\u6570\u7ec4\u7684\u64cd\u4f5c\u3002\u5c55\u5f00\u8fd0\u7b97\u7b26\u7684\u4f5c\u7528\u662f\u5c06\u4e00\u4e2a\u6570\u7ec4\u6216\u5bf9\u8c61\u7684\u5185\u5bb9\u5c55\u5f00\u4e3a\u5355\u4e2a\u5143\u7d20\u6216\u5c5e\u6027\uff0c\u4ece\u800c\u65b9\u4fbf\u5730\u8fdb\u884c\u5408\u5e76\u3001\u590d\u5236\u3001\u6d45\u62f7\u8d1d\u7b49\u64cd\u4f5c\u3002<\/p>\n<\/blockquote>\n\n\n\n<h3 class=\"wp-block-heading\">1. <strong>\u6570\u7ec4\u7684\u5c55\u5f00\u8fd0\u7b97\u7b26<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u6570\u7ec4\u4e2d\u7684\u5c55\u5f00\u8fd0\u7b97\u7b26\u53ef\u4ee5\u7528\u6765\u5c06\u4e00\u4e2a\u6570\u7ec4\u7684\u5143\u7d20\u62c6\u89e3\u5f00\u6765\uff0c\u6216\u5c06\u591a\u4e2a\u6570\u7ec4\u5408\u5e76\u4e3a\u4e00\u4e2a\u6570\u7ec4\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u8bed\u6cd5\uff1a<\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>let newArray = &#91;...array1, ...array2];<\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\">\u793a\u4f8b\uff1a<\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ \u5408\u5e76\u6570\u7ec4\nlet arr1 = &#91;1, 2, 3];\nlet arr2 = &#91;4, 5, 6];\nlet mergedArr = &#91;...arr1, ...arr2];  \/\/ &#91;1, 2, 3, 4, 5, 6]\nconsole.log(mergedArr);\n\n\/\/ \u590d\u5236\u6570\u7ec4\nlet arr3 = &#91;7, 8, 9];\nlet copyArr = &#91;...arr3];  \/\/ &#91;7, 8, 9]\nconsole.log(copyArr);\n\n\/\/ \u6570\u7ec4\u63d2\u5165\u5143\u7d20\nlet arr4 = &#91;4, 5, 6];\nlet newArr = &#91;1, 2, 3, ...arr4, 7, 8];  \/\/ &#91;1, 2, 3, 4, 5, 6, 7, 8]\nconsole.log(newArr);<\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\">\u5c55\u5f00\u8fd0\u7b97\u7b26\u7684\u4f18\u70b9\uff1a<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u7b80\u6d01<\/strong>\uff1a\u6bd4\u4f20\u7edf\u7684\u6570\u7ec4\u5408\u5e76\u65b9\u6cd5\uff08\u5982 <code>concat<\/code>\uff09\u66f4\u7b80\u6d01\u3002<\/li>\n\n\n\n<li><strong>\u6d45\u62f7\u8d1d<\/strong>\uff1a\u7528\u4e8e\u590d\u5236\u6570\u7ec4\u65f6\uff0c\u5b83\u662f\u6d45\u62f7\u8d1d\uff0c\u5373\u590d\u5236\u6570\u7ec4\u7684\u5f15\u7528\u5143\u7d20\uff0c\u4f46\u4e0d\u4f1a\u6df1\u5ea6\u590d\u5236\u5bf9\u8c61\u5143\u7d20\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">2. <strong>\u5bf9\u8c61\u7684\u5c55\u5f00\u8fd0\u7b97\u7b26<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5bf9\u8c61\u7684\u5c55\u5f00\u8fd0\u7b97\u7b26\u4e5f\u53ef\u4ee5\u5c06\u4e00\u4e2a\u5bf9\u8c61\u7684\u6240\u6709\u5c5e\u6027\u5c55\u5f00\u5230\u65b0\u7684\u5bf9\u8c61\u4e2d\uff0c\u7c7b\u4f3c\u4e8e\u6570\u7ec4\u7684\u5408\u5e76\u3002\u5b83\u4f7f\u5f97\u6211\u4eec\u53ef\u4ee5\u8f7b\u677e\u5730\u5408\u5e76\u5bf9\u8c61\u3001\u590d\u5236\u5bf9\u8c61\u6216\u66f4\u65b0\u5bf9\u8c61\u7684\u5c5e\u6027\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u8bed\u6cd5\uff1a<\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>let newObject = { ...object1, ...object2 };<\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\">\u793a\u4f8b\uff1a<\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ \u5408\u5e76\u5bf9\u8c61\nlet person = { name: \"John\", age: 30 };\nlet job = { jobTitle: \"Developer\", salary: 5000 };\nlet mergedObject = { ...person, ...job };\nconsole.log(mergedObject);\n\/\/ \u8f93\u51fa: { name: \"John\", age: 30, jobTitle: \"Developer\", salary: 5000 }\n\n\/\/ \u590d\u5236\u5bf9\u8c61\nlet copyPerson = { ...person };\nconsole.log(copyPerson);\n\/\/ \u8f93\u51fa: { name: \"John\", age: 30 }\n\n\/\/ \u66f4\u65b0\u5bf9\u8c61\u7684\u5c5e\u6027\nlet updatedPerson = { ...person, age: 31 };\nconsole.log(updatedPerson);\n\/\/ \u8f93\u51fa: { name: \"John\", age: 31 }<\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\">\u5bf9\u8c61\u5c55\u5f00\u8fd0\u7b97\u7b26\u7684\u6ce8\u610f\u4e8b\u9879\uff1a<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u6d45\u62f7\u8d1d<\/strong>\uff1a\u5b83\u662f\u6d45\u62f7\u8d1d\uff0c\u5373\u590d\u5236\u5bf9\u8c61\u7684\u5c5e\u6027\uff0c\u4f46\u5982\u679c\u5bf9\u8c61\u4e2d\u5305\u542b\u5d4c\u5957\u7684\u5bf9\u8c61\u6216\u6570\u7ec4\uff0c\u8fd9\u4e9b\u5d4c\u5957\u7684\u5bf9\u8c61\u6216\u6570\u7ec4\u4ecd\u7136\u662f\u5f15\u7528\u7c7b\u578b\uff0c\u5f15\u7528\u6307\u5411\u539f\u59cb\u5bf9\u8c61\u3002<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>  let original = { name: \"John\", address: { city: \"New York\" } };\n  let copy = { ...original };\n  copy.address.city = \"Los Angeles\";\n\n  console.log(original.address.city);  \/\/ \u8f93\u51fa: Los Angeles\n  console.log(copy.address.city);      \/\/ \u8f93\u51fa: Los Angeles<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u5c5e\u6027\u8986\u76d6<\/strong>\uff1a\u5f53\u591a\u4e2a\u5bf9\u8c61\u4e2d\u6709\u76f8\u540c\u7684\u5c5e\u6027\u65f6\uff0c\u540e\u9762\u7684\u5bf9\u8c61\u4f1a\u8986\u76d6\u524d\u9762\u7684\u5bf9\u8c61\u7684\u5c5e\u6027\u3002<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>  let obj1 = { a: 1, b: 2 };\n  let obj2 = { b: 3, c: 4 };\n  let mergedObj = { ...obj1, ...obj2 };\n  console.log(mergedObj);  \/\/ \u8f93\u51fa: { a: 1, b: 3, c: 4 }<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">3. <strong>\u6570\u7ec4\u4e0e\u5bf9\u8c61\u7ed3\u5408\u7684\u5c55\u5f00\u8fd0\u7b97\u7b26<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5c55\u5f00\u8fd0\u7b97\u7b26\u4e0d\u4ec5\u4ec5\u7528\u4e8e\u6570\u7ec4\u548c\u5bf9\u8c61\u672c\u8eab\uff0c\u8fd8\u53ef\u4ee5\u5c06\u6570\u7ec4\u4f5c\u4e3a\u5bf9\u8c61\u7684\u5c5e\u6027\uff0c\u6216\u8005\u5c06\u5bf9\u8c61\u4f5c\u4e3a\u6570\u7ec4\u7684\u5143\u7d20\uff0c\u7ed3\u5408\u6570\u7ec4\u548c\u5bf9\u8c61\u65f6\u975e\u5e38\u7075\u6d3b\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u793a\u4f8b\uff1a\u5bf9\u8c61\u4f5c\u4e3a\u6570\u7ec4\u7684\u5143\u7d20<\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>let obj1 = { name: \"John\" };\nlet obj2 = { age: 30 };\n\nlet arr = &#91;...&#91;obj1], ...&#91;obj2]];  \/\/ \u5408\u5e76\u6570\u7ec4\nconsole.log(arr);  \/\/ \u8f93\u51fa: &#91; { name: 'John' }, { age: 30 } ]<\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\">\u793a\u4f8b\uff1a\u6570\u7ec4\u4f5c\u4e3a\u5bf9\u8c61\u7684\u5c5e\u6027<\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>let obj = { ...{ name: \"Alice\", age: 25 }, ...{ hobbies: &#91;\"reading\", \"swimming\"] } };\nconsole.log(obj);\n\/\/ \u8f93\u51fa: { name: 'Alice', age: 25, hobbies: &#91;'reading', 'swimming'] }<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">4. <strong>\u5c55\u5f00\u8fd0\u7b97\u7b26\u4e0e\u51fd\u6570\u53c2\u6570<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5c55\u5f00\u8fd0\u7b97\u7b26\u4e5f\u53ef\u4ee5\u7528\u4e8e\u51fd\u6570\u53c2\u6570\u4e2d\uff0c\u7528\u6765\u5c06\u6570\u7ec4\u6216\u5bf9\u8c61\u5c55\u5f00\u4e3a\u5355\u72ec\u7684\u5143\u7d20\u6216\u5c5e\u6027\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u793a\u4f8b\uff1a\u51fd\u6570\u53c2\u6570\u4e2d\u7684\u6570\u7ec4\u5c55\u5f00<\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>function sum(...numbers) {\n    return numbers.reduce((total, num) =&gt; total + num, 0);\n}\n\nlet arr = &#91;1, 2, 3, 4];\nconsole.log(sum(...arr));  \/\/ \u8f93\u51fa: 10<\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\">\u793a\u4f8b\uff1a\u51fd\u6570\u53c2\u6570\u4e2d\u7684\u5bf9\u8c61\u5c55\u5f00<\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>function printDetails({ name, age }) {\n    console.log(`Name: ${name}, Age: ${age}`);\n}\n\nlet person = { name: \"John\", age: 30, city: \"New York\" };\nprintDetails(person);  \/\/ \u8f93\u51fa: Name: John, Age: 30<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">5. <strong>\u603b\u7ed3<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u6570\u7ec4\u5c55\u5f00\u8fd0\u7b97\u7b26\uff08<code>...<\/code>\uff09<\/strong>\uff1a\u7528\u4e8e\u5c06\u6570\u7ec4\u7684\u5143\u7d20\u5c55\u5f00\uff0c\u53ef\u4ee5\u7528\u4e8e\u5408\u5e76\u3001\u590d\u5236\u6570\u7ec4\u7b49\u64cd\u4f5c\u3002<\/li>\n\n\n\n<li><strong>\u5bf9\u8c61\u5c55\u5f00\u8fd0\u7b97\u7b26\uff08<code>...<\/code>\uff09<\/strong>\uff1a\u7528\u4e8e\u5c06\u5bf9\u8c61\u7684\u5c5e\u6027\u5c55\u5f00\uff0c\u53ef\u4ee5\u7528\u4e8e\u5408\u5e76\u3001\u590d\u5236\u5bf9\u8c61\uff0c\u6216\u8005\u66f4\u65b0\u5bf9\u8c61\u7684\u5c5e\u6027\u3002<\/li>\n\n\n\n<li><strong>\u4f18\u70b9<\/strong>\uff1a<\/li>\n\n\n\n<li>\u8bed\u6cd5\u7b80\u6d01\uff0c\u64cd\u4f5c\u76f4\u89c2\u3002<\/li>\n\n\n\n<li>\u53ef\u4ee5\u8f7b\u677e\u5b9e\u73b0\u6570\u7ec4\u548c\u5bf9\u8c61\u7684\u5408\u5e76\u4e0e\u590d\u5236\u3002<\/li>\n\n\n\n<li><strong>\u6ce8\u610f\u4e8b\u9879<\/strong>\uff1a<\/li>\n\n\n\n<li>\u5c55\u5f00\u8fd0\u7b97\u7b26\u662f\u6d45\u62f7\u8d1d\uff0c\u5d4c\u5957\u5bf9\u8c61\u548c\u6570\u7ec4\u4e0d\u4f1a\u6df1\u5ea6\u590d\u5236\u3002<\/li>\n\n\n\n<li>\u5bf9\u8c61\u7684\u5c5e\u6027\u4f1a\u88ab\u8986\u76d6\uff0c\u540e\u9762\u7684\u5bf9\u8c61\u4f1a\u8986\u76d6\u524d\u9762\u7684\u540c\u540d\u5c5e\u6027\u3002<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u5c55\u5f00\u8fd0\u7b97\u7b26\u5927\u5927\u7b80\u5316\u4e86\u6570\u7ec4\u548c\u5bf9\u8c61\u64cd\u4f5c\uff0c\u4f7f\u4ee3\u7801\u66f4\u7b80\u6d01\u3001\u53ef\u8bfb\u6027\u66f4\u9ad8\u3002\u66f4\u591a\u8be6\u7ec6\u5185\u5bb9\u8bf7\u5173\u6ce8\u5176\u4ed6\u76f8\u5173\u6587\u6587\u7ae0\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728 JavaScript \u4e2d\uff0c\u5c55\u5f00\u8fd0\u7b97\u7b26\uff08spread operator\uff09 \u662f\u4e00\u4e2a\u975e\u5e38\u6709\u7528\u7684\u8bed\u6cd5\uff0c\u5b83\u7528 &#8230; [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[46],"tags":[],"class_list":["post-343","post","type-post","status-publish","format-standard","hentry","category-javascript"],"_links":{"self":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/343","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/comments?post=343"}],"version-history":[{"count":3,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/343\/revisions"}],"predecessor-version":[{"id":346,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/343\/revisions\/346"}],"wp:attachment":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media?parent=343"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/categories?post=343"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/tags?post=343"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}