{"id":170209,"date":"2024-05-08T17:02:34","date_gmt":"2024-05-08T09:02:34","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/170209.html"},"modified":"2024-05-08T17:02:39","modified_gmt":"2024-05-08T09:02:39","slug":"javascript-%e7%a8%8b%e5%ba%8f%e4%b8%ad%e5%a6%82%e4%bd%95%e8%be%93%e5%87%ba-array","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/170209.html","title":{"rendered":"javascript \u7a0b\u5e8f\u4e2d\u5982\u4f55\u8f93\u51fa Array"},"content":{"rendered":"

\"javascript<\/p>\n

\u5728JavaScript\u7a0b\u5e8f\u4e2d\uff0c\u8f93\u51faArray\u7684\u65b9\u6cd5\u4e3b\u8981\u6709 \u63a7\u5236\u53f0\u6253\u5370\u3001\u4f7f\u7528alert\u7a97\u53e3\u3001\u4fee\u6539DOM\u6765\u5c55\u793a<\/strong> \u5728\u7f51\u9875\u4e2d\uff0c\u4ee5\u53ca \u5728\u6587\u6863\u5bf9\u8c61<\/strong> \u4e2d\u8f93\u51fa\u7b49\u624b\u6bb5\u3002\u63a7\u5236\u53f0\u6253\u5370<\/strong>\u662f\u5f00\u53d1\u4e2d\u6700\u5e38\u7528\u7684\u65b9\u5f0f\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528console.log()<\/code>\u65b9\u6cd5\u6765\u628a\u6570\u7ec4\u5185\u5bb9\u8f93\u51fa\u5230\u6d4f\u89c8\u5668\u7684\u5f00\u53d1\u8005\u63a7\u5236\u53f0\u3002\u8fd9\u4e2a\u65b9\u6cd5\u53ef\u4ee5\u76f4\u63a5\u8ba9\u4f60\u770b\u5230\u6570\u7ec4\u7684\u7ed3\u6784\u548c\u5185\u5bb9\uff0c\u975e\u5e38\u9002\u5408\u8c03\u8bd5\u76ee\u7684\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u63a7\u5236\u53f0\u6253\u5370<\/h3>\n<\/p>\n

\u63a7\u5236\u53f0\u6253\u5370\u662f\u6700\u7b80\u5355\u76f4\u63a5\u7684\u8f93\u51fa\u6570\u7ec4\u65b9\u6cd5\u3002\u5f00\u53d1\u8005\u53ef\u4ee5\u901a\u8fc7\u8c03\u8bd5\u5de5\u5177\u5feb\u901f\u67e5\u770b\u6570\u7ec4\u5185\u5bb9\u3002<\/p>\n<\/p>\n

\u4f7f\u7528console.log()<\/code><\/h4>\n<\/p>\n

let fruits = ["Apple", "Banana", "Cherry"];<\/p>\n
console.log(fruits);<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4f60\u53ef\u4ee5\u770b\u5230\u63a7\u5236\u53f0\u5c55\u793a\u4e86\u6570\u7ec4\u7684\u5143\u7d20\u4ee5\u53ca\u5b83\u4eec\u7684\u7d22\u5f15\u3002<\/p>\n<\/p>\n
\u4f7f\u7528console.table()<\/code><\/h4>\n<\/p>\n
\u5982\u679c\u4f60\u60f3\u4ee5\u8868\u683c\u7684\u5f62\u5f0f\u8f93\u51fa\u6570\u7ec4\uff0c\u4f7f\u5f97\u66f4\u76f4\u89c2\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528console.table()<\/code>\uff1a<\/p>\n<\/p>\n
let fruits = ["Apple", "Banana", "Cherry"];<\/p>\n
console.table(fruits);<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u4f1a\u5728\u63a7\u5236\u53f0\u663e\u793a\u4e00\u4e2a\u8868\u683c\uff0c\u5c06\u6570\u7ec4\u7684\u7d22\u5f15\u548c\u503c\u6e05\u6670\u5730\u5448\u73b0\u51fa\u6765\u3002<\/p>\n<\/p>\n
\u4e8c\u3001\u4f7f\u7528Alert\u7a97\u53e3<\/h3>\n<\/p>\n
\u5c3d\u7ba1\u4e0d\u5229\u4e8e\u5c55\u793a\u8f83\u5927\u7684\u6570\u7ec4\uff0c\u4f46alert()<\/code>\u51fd\u6570\u53ef\u4ee5\u7528\u4e8e\u5feb\u901f\u67e5\u770b\u8f83\u5c0f\u6570\u7ec4\u7684\u5185\u5bb9\u3002<\/p>\n<\/p>\n
\u5f39\u51fa\u7a97\u53e3\u663e\u793a<\/h4>\n<\/p>\n
let fruits = ["Apple", "Banana", "Cherry"];<\/p>\n
alert(fruits);<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u4f1a\u5f39\u51fa\u4e00\u4e2a\u5305\u542b\u4e86\u6570\u7ec4\u6240\u6709\u5143\u7d20\u7684\u7a97\u53e3\uff0c\u6570\u7ec4\u4f1a\u88ab\u8f6c\u6362\u6210\u4e00\u4e2a\u7531\u9017\u53f7\u5206\u9694\u7684\u5b57\u7b26\u4e32\u3002<\/p>\n<\/p>\n
\u4e09\u3001\u4fee\u6539DOM\u5143\u7d20<\/h3>\n<\/p>\n
\u901a\u8fc7JavaScript\u4fee\u6539DOM\u5143\u7d20\uff0c\u53ef\u4ee5\u5c06\u6570\u7ec4\u52a8\u6001\u5730\u663e\u793a\u5728\u7f51\u9875\u4e2d\u3002\u8fd9\u9002\u7528\u4e8e\u9700\u8981\u5411\u6700\u7ec8\u7528\u6237\u5c55\u793a\u6570\u7ec4\u5185\u5bb9\u7684\u60c5\u51b5\u3002<\/p>\n<\/p>\n
\u5728HTML\u5143\u7d20\u4e2d\u663e\u793a<\/h4>\n<\/p>\n
let fruits = ["Apple", "Banana", "Cherry"];<\/p>\n
document.getElementById("arrayOutput").innerText = fruits.join("\\n");<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5982\u679c\u4f60\u6709\u4e00\u4e2a\u5143\u7d20\u7684id<\/code>\u662farrayOutput<\/code>\uff0c\u4e0a\u9762\u8fd9\u6bb5\u4ee3\u7801\u4f1a\u5c06\u6570\u7ec4\u4e2d\u7684\u6bcf\u4e2a\u5143\u7d20\u8f93\u51fa\u4e3a\u4e00\u4e2a\u5355\u72ec\u7684\u884c\u3002<\/p>\n<\/p>\n
\u521b\u5efa\u5217\u8868\u663e\u793a<\/h4>\n<\/p>\n
\u53e6\u4e00\u79cd\u65b9\u5f0f\u662f\u521b\u5efa\u4e00\u4e2a\u5217\u8868\u6765\u5c55\u793a\u6570\u7ec4\u3002<\/p>\n<\/p>\n
let fruits = ["Apple", "Banana", "Cherry"];<\/p>\n
let html = '<ul>' + fruits.map(fruit => `<li>${fruit}<\/li>`).join('') + '<\/ul>';<\/p>\n
document.getElementById("arrayOutput").innerHTML = html;<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u6bb5\u4ee3\u7801\u4f7f\u7528\u4e86map()<\/code>\u65b9\u6cd5\u548c\u6a21\u677f\u5b57\u7b26\u4e32\u6765\u6784\u5efa\u4e00\u4e2a\u5305\u542b\u6570\u7ec4\u5143\u7d20\u7684\u65e0\u5e8f\u5217\u8868\uff0c\u5e76\u5c06\u5176\u63d2\u5165\u5230\u9875\u9762\u4e2d\u3002<\/p>\n<\/p>\n
\u56db\u3001\u5728\u6587\u6863\u5bf9\u8c61\u4e2d\u8f93\u51fa<\/h3>\n<\/p>\n
\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u4f60\u53ef\u80fd\u9700\u8981\u628a\u6570\u7ec4\u6570\u636e\u8f93\u51fa\u5230\u6587\u6863\u5bf9\u8c61\u4e2d\uff0c\u4f8b\u5982\u4e0b\u8f7d\u6587\u672c\u6587\u4ef6\u3002<\/p>\n<\/p>\n
\u751f\u6210\u6587\u672c\u6587\u4ef6\u4e0b\u8f7d<\/h4>\n<\/p>\n
\u4f60\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u53ef\u4e0b\u8f7d\u7684\u6587\u672c\u6587\u4ef6\u542b\u6709\u6570\u7ec4\u5185\u5bb9\uff1a<\/p>\n<\/p>\n
let fruits = ["Apple", "Banana", "Cherry"];<\/p>\n
let blob = new Blob([fruits.join("\\n")], { type: 'text\/plAI<\/a>n' });<\/p>\n
let link = document.createElement('a');<\/p>\n
link.download = 'fruits.txt';<\/p>\n
link.href = window.URL.createObjectURL(blob);<\/p>\n
link.click();<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4e0a\u8ff0\u4ee3\u7801\u521b\u5efa\u4e86\u4e00\u4e2a\u65b0\u7684Blob\u5bf9\u8c61\uff0c\u5e76\u4e14\u5c06\u6570\u7ec4\u8f6c\u6362\u6210\u6587\u672c\u3002\u63a5\u7740\u521b\u5efa\u4e00\u4e2a\u4e0b\u8f7d\u94fe\u63a5\uff0c\u5e76\u6a21\u62df\u70b9\u51fb\u8be5\u94fe\u63a5\uff0c\u4ece\u800c\u751f\u6210\u4e00\u4e2a\u5305\u542b\u6570\u7ec4\u5185\u5bb9\u7684fruits.txt<\/code>\u6587\u4ef6\u3002 <\/p>\n<\/p>\n
\u7efc\u4e0a\u6240\u8ff0\uff0c\u8f93\u51fa\u6570\u7ec4\u5728JavaScript\u7a0b\u5e8f\u4e2d\u662f\u4e00\u4ef6\u6613\u4e8e\u5b9e\u73b0\u7684\u5de5\u4f5c\uff0c\u4e0d\u540c\u7684\u65b9\u6cd5\u9002\u7528\u4e8e\u4e0d\u540c\u7684\u4f7f\u7528\u573a\u666f\u3002\u5f00\u53d1\u8005\u53ef\u4ee5\u6839\u636e\u5177\u4f53\u9700\u8981\u9009\u62e9\u6700\u5408\u9002\u7684\u8f93\u51fa\u65b9\u5f0f\u3002<\/p>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
\u95ee\u98981\uff1a\u5982\u4f55\u5728JavaScript\u7a0b\u5e8f\u4e2d\u5c06\u6570\u7ec4\u5185\u5bb9\u8f93\u51fa\u5230\u63a7\u5236\u53f0\uff1f<\/strong><\/p>\n
\u7b54\uff1a\u8981\u5728JavaScript\u7a0b\u5e8f\u4e2d\u8f93\u51fa\u6570\u7ec4\u5185\u5bb9\uff0c\u53ef\u4ee5\u4f7f\u7528console.log()<\/code>\u65b9\u6cd5\u6765\u6253\u5370\u6570\u7ec4\u3002\u53ea\u9700\u5c06\u6570\u7ec4\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\u7ed9console.log()<\/code>\u65b9\u6cd5\u5373\u53ef\u3002\u4f8b\u5982\uff1a<\/p>\n
var array = [1, 2, 3, 4, 5];\nconsole.log(array);\n<\/code><\/pre>\n
\u8fd0\u884c\u4e0a\u8ff0\u4ee3\u7801\u540e\uff0c\u4f60\u4f1a\u5728\u4f60\u7684\u6d4f\u89c8\u5668\u7684\u5f00\u53d1\u8005\u5de5\u5177\u63a7\u5236\u53f0\u4e2d\u770b\u5230\u6570\u7ec4\u7684\u5185\u5bb9\u8f93\u51fa\u3002<\/p>\n
\u95ee\u98982\uff1a\u9664\u4e86\u4f7f\u7528console.log()\uff0c\u8fd8\u6709\u5176\u4ed6\u65b9\u6cd5\u53ef\u4ee5\u5728JavaScript\u7a0b\u5e8f\u4e2d\u8f93\u51fa\u6570\u7ec4\u5417\uff1f<\/strong><\/p>\n
\u7b54\uff1a\u662f\u7684\uff0c\u9664\u4e86\u4f7f\u7528console.log()<\/code>\u6765\u8f93\u51fa\u6570\u7ec4\uff0c\u4f60\u8fd8\u53ef\u4ee5\u4f7f\u7528document.write()<\/code>\u6765\u5c06\u6570\u7ec4\u5185\u5bb9\u76f4\u63a5\u8f93\u51fa\u5230HTML\u9875\u9762\u4e0a\u3002\u8fd9\u5c06\u5728\u7f51\u9875\u4e0a\u663e\u793a\u6570\u7ec4\u5185\u5bb9\u3002\u4f8b\u5982\uff1a<\/p>\n
var array = [1, 2, 3, 4, 5];\ndocument.write(array);\n<\/code><\/pre>\n
\u4e0a\u8ff0\u4ee3\u7801\u5c06\u5728\u9875\u9762\u4e0a\u663e\u793a\u6570\u7ec4\u7684\u5185\u5bb9\u3002<\/p>\n
\u95ee\u98983\uff1a\u5982\u4f55\u5728JavaScript\u7a0b\u5e8f\u4e2d\u5c06\u6570\u7ec4\u5185\u5bb9\u4f5c\u4e3a\u5b57\u7b26\u4e32\u8f93\u51fa\uff1f<\/strong><\/p>\n
\u7b54\uff1a\u8981\u5c06\u6570\u7ec4\u5185\u5bb9\u4f5c\u4e3a\u5b57\u7b26\u4e32\u8f93\u51fa\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528toString()<\/code>\u65b9\u6cd5\u3002\u8be5\u65b9\u6cd5\u5c06\u6570\u7ec4\u8f6c\u6362\u4e3a\u4ee5\u9017\u53f7\u5206\u9694\u7684\u5b57\u7b26\u4e32\u3002\u4f8b\u5982\uff1a<\/p>\n
var array = [1, 2, 3, 4, 5];\nvar arrayString = array.toString();\nconsole.log(arrayString);\n<\/code><\/pre>\n
\u4e0a\u8ff0\u4ee3\u7801\u5c06\u5728\u63a7\u5236\u53f0\u8f93\u51fa"1,2,3,4,5"\u3002\u4f60\u53ef\u4ee5\u901a\u8fc7split()<\/code>\u65b9\u6cd5\u5c06\u8be5\u5b57\u7b26\u4e32\u5206\u5272\u6210\u4e00\u4e2a\u65b0\u7684\u6570\u7ec4\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728JavaScript\u7a0b\u5e8f\u4e2d\uff0c\u8f93\u51faArray\u7684\u65b9\u6cd5\u4e3b\u8981\u6709 \u63a7\u5236\u53f0\u6253\u5370\u3001\u4f7f\u7528alert\u7a97\u53e3\u3001\u4fee\u6539DOM\u6765\u5c55\u793a \u5728 […]","protected":false},"author":3,"featured_media":170219,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/170209"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=170209"}],"version-history":[{"count":0,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/170209\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/170219"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=170209"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=170209"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=170209"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}