{"id":1425,"date":"2022-07-18T19:07:28","date_gmt":"2022-07-18T11:07:28","guid":{"rendered":"https:\/\/zhuxinyong.com\/?p=1425"},"modified":"2022-07-19T15:14:01","modified_gmt":"2022-07-19T07:14:01","slug":"javascript-zhong-de-kong-yu-ju","status":"publish","type":"post","link":"https:\/\/zhuxinyong.com\/?p=1425","title":{"rendered":"JavaScript \u4e2d\u7684\u7a7a\u8bed\u53e5"},"content":{"rendered":"

\"\"<\/p>\n

\u539f\u6587\u5730\u5740\uff1ahttps:\/\/dev.to\/bhagatparwinder\/the-empty-statement-in-javascript-3lg7<\/a><\/p>\n

\u7a7a\u8bed\u53e5\u662f JavaScript \u4e2d\u4e00\u4e2a\u6709\u8da3\u548c\u5947\u602a\u7684\u4e1c\u897f\uff0c\u800c\u4e14\u4f60\u5e94\u8be5\u6709\u6240\u4e86\u89e3\u3002\u5b83\u53ef\u80fd\u6ca1\u6709\u4ec0\u4e48\u4f5c\u7528\uff0c\u4f46\u786e\u5b9e\u662f\u5b58\u5728\u7684\u800c\u4e14\u662f\u5408\u6cd5\u7684\u3002JavaScript \u4e2d\u7a7a\u8bed\u53e5\u5c31\u662f ;<\/code>\uff0c\u662f\u7684\uff0c\u4e00\u4e2a\u5206\u53f7\u3002<\/p>\n

\u5373\u4f7f JavaScript \u671f\u671b\u7a7a\u8bed\u53e5\u5305\u542b\u8bed\u53e5\uff0c\u4f46\u5176\u5b9e\u5b83\u6ca1\u6709\u63d0\u4f9b\uff0c\u5b83\u6ca1\u6709\u4efb\u4f55\u4f5c\u7528\u800c\u4e14\u4e5f\u4e0d\u6267\u884c\u4efb\u4f55\u52a8\u4f5c\u3002<\/p>\n

\u4e00\u4e2a\u5178\u578b\u7684\u6848\u4f8b\u5c31\u662f\u521b\u5efa\u4e00\u4e2a\u6ca1\u6709\u5faa\u73af\u4f53\u7684\u5faa\u73af\u3002<\/p>\n

const arr = [1, 2, 3, 4, 5];\n\nfor (i = 0; i < arr.length; arr[i++] = 0) ;\n\nconsole.log(arr); \/\/ [ 0, 0, 0, 0, 0 ]\n<\/code><\/pre>\n
\u5f53\u4f60\u9700\u8981\u7a7a\u8bed\u53e5\u7684\u65f6\u5019\uff0c\u5199\u4e0b\u6ce8\u91ca\u662f\u4e00\u4e2a\u597d\u4e60\u60ef\u3002<\/p>\n
const arr = [1, 2, 3, 4, 5];\n\nfor (i = 0; i < arr.length; arr[i++] = 0) \/* empty *\/ ;\n\nconsole.log(arr); \/\/ [ 0, 0, 0, 0, 0 ]\n<\/code><\/pre>\n
\u53e6\u4e00\u4e2a\u4f7f\u7528\u7a7a\u8bed\u53e5\u7684\u4f8b\u5b50\u662f\u94fe\u5f0f if-else<\/code>\u3002<\/p>\n
const name = "Lauren";\n\nif (name === "Parwinder")\n    console.log(name);\nelse if (name === "Lauren")\n    console.log(`Hello ${name}`); \/\/ Hello Lauren\nelse if (name === "Eliu"); \/\/ No action is taken if name passed is  "Eliu"\nelse if (name === "Robert")\n    console.log(`Good to see you ${name}`);\nelse\n    console.log("Goodbye");\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
\u539f\u6587\u5730\u5740\uff1ahttps:\/\/dev.to\/bhagatparwinder\/the-empty-stat...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2,20,3],"tags":[202],"class_list":["post-1425","post","type-post","status-publish","format-standard","hentry","category-all","category-frontend","category-tech","tag-202"],"_links":{"self":[{"href":"https:\/\/zhuxinyong.com\/index.php?rest_route=\/wp\/v2\/posts\/1425","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/zhuxinyong.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/zhuxinyong.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/zhuxinyong.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/zhuxinyong.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1425"}],"version-history":[{"count":1,"href":"https:\/\/zhuxinyong.com\/index.php?rest_route=\/wp\/v2\/posts\/1425\/revisions"}],"predecessor-version":[{"id":1426,"href":"https:\/\/zhuxinyong.com\/index.php?rest_route=\/wp\/v2\/posts\/1425\/revisions\/1426"}],"wp:attachment":[{"href":"https:\/\/zhuxinyong.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1425"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/zhuxinyong.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1425"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/zhuxinyong.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1425"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}