{"id":2909,"date":"2020-04-22T16:41:47","date_gmt":"2020-04-22T08:41:47","guid":{"rendered":"http:\/\/www.yuguoxy.com\/geekhome\/?p=2909"},"modified":"2026-08-18T12:35:30","modified_gmt":"2026-08-18T04:35:30","slug":"javascript%e4%b9%8b%e9%97%ad%e5%8c%85%e4%b8%83%ef%bc%88%e9%97%ad%e5%8c%85%e7%9a%84%e5%ba%94%e7%94%a8%e5%9c%ba%e6%99%af%ef%bc%89","status":"publish","type":"post","link":"https:\/\/ai.zhousir.top\/?p=2909","title":{"rendered":"javascript\u4e4b\u95ed\u5305\u4e03\uff08\u95ed\u5305\u7684\u5e94\u7528\u573a\u666f\uff09"},"content":{"rendered":"
\n

\u95ed\u5305\u4e0d\u53ea\u662f\u9762\u8bd5\u540d\u8bcd\uff0c\u5b83\u4f1a\u5728\u5b9a\u65f6\u5668\u4f20\u53c2\u3001\u4e8b\u4ef6\u56de\u8c03\u3001\u79c1\u6709\u53d8\u91cf\u3001\u5faa\u73af\u7ed1\u5b9a\u548c ES6 \u504f\u51fd\u6570\u91cc\u53cd\u590d\u51fa\u73b0\u3002\u4e0b\u9762\u6309\u539f\u6587\u4e94\u4e2a\u573a\u666f\u628a\u4f8b\u5b50\u644a\u5f00\u3002\u8bb0\u4f4f\u4e00\u6761\uff1a\u8fd4\u56de\u7684\u51fd\u6570\u4e0d\u8981\u968f\u624b\u53bb\u5f15\u7528\u5faa\u73af\u53d8\u91cf\u3002<\/p>\n

\u53c2\u8003\uff1aCSDN \u539f\u6587<\/a>\uff1b\u5ed6\u96ea\u5cf0\uff1a\u95ed\u5305<\/a>\u3002<\/p>\n

\u4e00\u3001setTimeout \u4f20\u53c2<\/h2>\n

\u539f\u751f setTimeout<\/code> \u4f20\u7684\u7b2c\u4e00\u4e2a\u51fd\u6570\u4e0d\u80fd\u5e26\u53c2\u6570\uff0c\u7528\u95ed\u5305\u53ef\u4ee5\u505a\u5230\u4f20\u53c2\uff1a<\/p>\n

    setTimeout(function(param){\n\n        alert(param)\n\n    },1000)\n\n\n\n    \/\/\u901a\u8fc7\u95ed\u5305\u53ef\u4ee5\u5b9e\u73b0\u4f20\u53c2\u6548\u679c\n\n    function func(param){\n\n        return function(){\n\n            alert(param)\n\n        }\n\n    }\n\n    var f1 = func(1);\n\n    setTimeout(f1,1000);<\/code><\/pre>\n
\u4e8c\u3001\u56de\u8c03<\/h2>\n
\u6211\u4eec\u5b9a\u4e49\u884c\u4e3a\uff0c\u518d\u628a\u5b83\u7ed1\u5230\u70b9\u51fb\u6216\u6309\u952e\u4e0a\u3002\u4ee3\u7801\u901a\u5e38\u4f5c\u4e3a\u56de\u8c03\uff08\u4e8b\u4ef6\u89e6\u53d1\u65f6\u8c03\u7528\u7684\u51fd\u6570\uff09\u6302\u4e0a\u53bb\uff1a<\/p>\n
<body>\n\n    <p>\u54c8\u54c8\u54c8\u54c8\u54c8\u54c8<\/p>\n\n    <h1>hhhhhhhhh<\/h1>\n\n    <h2>qqqqqqqqq<\/h2>\n\n    <a href=\"#\" id=\"size-12\">12<\/a>\n\n    <a href=\"#\" id=\"size-14\">14<\/a>\n\n    <a href=\"#\" id=\"size-16\">16<\/a>\n\n\n\n<script>\n\n    function changeSize(size){\n\n        return function(){\n\n            document.body.style.fontSize = size + 'px';\n\n        };\n\n    }\n\n\n\n    var size12 = changeSize(12);\n\n    var size14 = changeSize(14);\n\n    var size16 = changeSize(16);\n\n\n\n    document.getElementById('size-12').onclick = size12;\n\n    document.getElementById('size-14').onclick = size14;\n\n    document.getElementById('size-16').onclick = size16;\n\n<\/script>\n\n<\/body><\/code><\/pre>\n
\u4e09\u3001\u5c01\u88c5\u53d8\u91cf<\/h2>\n
\u7528\u95ed\u5305\u5b9a\u4e49\u80fd\u8bbf\u95ee\u79c1\u6709\u51fd\u6570\u548c\u79c1\u6709\u53d8\u91cf\u7684\u516c\u6709\u51fd\u6570\uff1a<\/p>\n
    var counter = (function(){\n\n        var privateCounter = 0; \/\/\u79c1\u6709\u53d8\u91cf\n\n        function change(val){\n\n            privateCounter += val;\n\n        }\n\n        return {\n\n            increment:function(){   \/\/\u4e09\u4e2a\u95ed\u5305\u5171\u4eab\u4e00\u4e2a\u8bcd\u6cd5\u73af\u5883\n\n                change(1);\n\n            },\n\n            decrement:function(){\n\n                change(-1);\n\n            },\n\n            value:function(){\n\n                return privateCounter;\n\n            }\n\n        };\n\n    })();\n\n\n\n    console.log(counter.value());\/\/0\n\n    counter.increment();\n\n    counter.increment();\/\/2<\/code><\/pre>\n
    \n
  • \n
    \u5171\u4eab\u7684\u73af\u5883\u521b\u5efa\u5728\u4e00\u4e2a\u533f\u540d\u51fd\u6570\u4f53\u5185\uff0c\u7acb\u5373\u6267\u884c\u3002<\/section>\n<\/li>\n
  • \n
    \u73af\u5883\u4e2d\u6709\u4e00\u4e2a\u5c40\u90e8\u53d8\u91cf\u3001\u4e00\u4e2a\u5c40\u90e8\u51fd\u6570\uff0c\u901a\u8fc7\u533f\u540d\u51fd\u6570\u8fd4\u56de\u7684\u5bf9\u8c61\u4e0a\u7684\u4e09\u4e2a\u516c\u5171\u51fd\u6570\u8bbf\u95ee\u3002<\/section>\n<\/li>\n<\/ul>\n
    \u53e6\u4e00\u4e2a\u8ba1\u6570\u5668<\/h3>\n
    \u7528 JavaScript \u521b\u5efa\u8ba1\u6570\u5668\uff1a<\/p>\n
    'use strict';\n\nfunction create_counter(initial) {\n\n    var x = initial || 0;\n\n    return {\n\n        inc: function () {\n\n            x += 1;\n\n            return x;\n\n        }\n\n    }\n\n}<\/code><\/pre>\n
    \u8fd0\u884c\u7ed3\u679c\uff1a<\/p>\n
    var c1 = create_counter();\n\nc1.inc(); \/\/ 1\n\nc1.inc(); \/\/ 2\n\nc1.inc(); \/\/ 3\n\n\n\nvar c2 = create_counter(10);\n\nc2.inc(); \/\/ 11\n\nc2.inc(); \/\/ 12\n\nc2.inc(); \/\/ 13<\/code><\/pre>\n
    \u8fd4\u56de\u5bf9\u8c61\u91cc\u5b9e\u73b0\u4e86\u4e00\u4e2a\u95ed\u5305\uff0c\u643a\u5e26\u5c40\u90e8\u53d8\u91cf x<\/code>\uff0c\u5916\u90e8\u6839\u672c\u8bbf\u95ee\u4e0d\u5230\u3002\u95ed\u5305\u5c31\u662f\u643a\u5e26\u72b6\u6001\u7684\u51fd\u6570\uff0c\u5e76\u4e14\u72b6\u6001\u53ef\u4ee5\u5b8c\u5168\u5bf9\u5916\u9690\u85cf\u3002<\/strong><\/p>\n\n\n\n\n\n\n\n\n\n
    \u573a\u666f<\/th>\n\u95ed\u5305\u505a\u4e86\u4ec0\u4e48<\/th>\n<\/tr>\n<\/thead>\n
    setTimeout<\/td>\n\u628a\u53c2\u6570\u5c01\u8fdb\u8fd4\u56de\u7684\u65e0\u53c2\u51fd\u6570<\/td>\n<\/tr>\n
    \u4e8b\u4ef6\u56de\u8c03<\/td>\nchangeSize(n) \u8fd4\u56de\u771f\u6b63\u7684 onclick<\/td>\n<\/tr>\n
    \u6a21\u5757\/\u8ba1\u6570\u5668<\/td>\nIIFE \u91cc\u7684\u79c1\u6709\u53d8\u91cf\u53ea\u7ecf\u516c\u5f00\u65b9\u6cd5\u6539<\/td>\n<\/tr>\n
    \u5faa\u73af\u7ed1\u5b9a<\/td>\n\u7528\u7acb\u5373\u6267\u884c\u51fd\u6570\u628a\u5f53\u524d i \u62f7\u5230 n<\/td>\n<\/tr>\n
    \u504f\u51fd\u6570 addX<\/td>\n\u5185\u5c42\u51fd\u6570\u4e00\u76f4\u80fd\u8bfb\u5230 x<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
    \u56db\u3001\u5faa\u73af\u7ed1\u5b9a\u7684\u7ecf\u5178\u5751<\/h2>\n
    function count() {\n\n    var arr = [];\n\n    for (var i=1; i<=3; i++) {\n\n        arr.push(function () {\n\n            return i * i;\n\n        });\n\n    }\n\n    return arr;\n\n}\n\n\n\nvar results = count();\n\nvar f1 = results[0];\n\nvar f2 = results[1];\n\nvar f3 = results[2];<\/code><\/pre>\n
    \u6bcf\u6b21\u5faa\u73af\u90fd\u521b\u5efa\u4e86\u4e00\u4e2a\u65b0\u51fd\u6570\uff0c\u4e09\u4e2a\u51fd\u6570\u653e\u8fdb\u6570\u7ec4\u8fd4\u56de\u3002\u4f60\u53ef\u80fd\u4ee5\u4e3a f1() \/ f2() \/ f3()<\/code> \u662f 1 4 9<\/code>\uff0c\u5b9e\u9645\u662f\uff1a<\/p>\n
    f1(); \/\/ 16\n\nf2(); \/\/ 16\n\nf3(); \/\/ 16<\/code><\/pre>\n
    \u5168\u90e8\u90fd\u662f 16\u3002\u8fd4\u56de\u7684\u51fd\u6570\u5f15\u7528\u4e86\u53d8\u91cf i\uff0c\u4f46\u5e76\u4e0d\u7acb\u523b\u6267\u884c\u3002\u4e09\u4e2a\u51fd\u6570\u90fd\u8fd4\u56de\u65f6\uff0c\u5b83\u4eec\u5f15\u7528\u7684 i \u5df2\u7ecf\u53d8\u6210 4\uff0c4\u00d74=16\u3002<\/p>\n
    \u8fd4\u56de\u95ed\u5305\u65f6\u7262\u8bb0\uff1a\u8fd4\u56de\u51fd\u6570\u4e0d\u8981\u5f15\u7528\u4efb\u4f55\u5faa\u73af\u53d8\u91cf\uff0c\u6216\u540e\u7eed\u4f1a\u53d8\u5316\u7684\u53d8\u91cf\u3002<\/strong><\/p>\n
    \u5982\u679c\u4e00\u5b9a\u8981\u5f15\u7528\uff0c\u518d\u5305\u4e00\u5c42\uff0c\u7528\u53c2\u6570\u7ed1\u4f4f\u5f53\u524d\u503c\uff1a<\/p>\n
    function count() {\n\n    var arr = [];\n\n    for (var i=1; i<=3; i++) {\n\n        arr.push((function (n) {\n\n            return function () {\n\n                return n * n;\n\n            }\n\n        })(i));\n\n    }\n\n    return arr;\n\n}\n\n\n\nvar results = count();\n\nvar f1 = results[0];\n\nvar f2 = results[1];\n\nvar f3 = results[2];\n\n\n\nf1(); \/\/ 1\n\nf2(); \/\/ 4\n\nf3(); \/\/ 9<\/code><\/pre>\n
    \u8fd9\u91cc\u7528\u7684\u662f\u300c\u521b\u5efa\u533f\u540d\u51fd\u6570\u5e76\u7acb\u523b\u6267\u884c\u300d\uff1a<\/p>\n
    (function (x) {\n\n    return x * x;\n\n})(3); \/\/ 9<\/code><\/pre>\n
    \u4e94\u3001ES6 \u91cc\u4e0d\u7ecf\u610f\u7684\u95ed\u5305<\/h2>\n
    \u5c40\u90e8\u5e94\u7528\uff08partial application\uff09\u5c31\u662f\u95ed\u5305\uff1a<\/p>\n
    let c = 4\n\nconst addX = x => n => n + x\n\nconst addThree = addX(3)\n\nlet d = addThree(c)\n\nconsole.log('example partial application', d)<\/code><\/pre>\n
    \u4e0d\u7528\u7bad\u5934\u51fd\u6570\u7684\u7b49\u6548\u5199\u6cd5\uff1a<\/p>\n
    let c = 4\n\nfunction addX(x) {\n\n  return function(n) {\n\n     return n + x\n\n  }\n\n}\n\nconst addThree = addX(3)\n\nlet d = addThree(c)\n\nconsole.log('example partial application', d)<\/code><\/pre>\n
    \u901a\u7528\u52a0\u6cd5 addX<\/code> \u63a5\u53d7 x\uff0c\u8fd4\u56de\u53e6\u4e00\u4e2a\u51fd\u6570\uff1b\u5185\u5c42\u628a\u53c2\u6570\u548c x \u76f8\u52a0\u3002x<\/code> \u662f\u95ed\u5305\u7684\u4e00\u90e8\u5206\u3002\u58f0\u660e addThree<\/code> \u65f6\uff0c\u5b83\u5e26\u7740\u51fd\u6570\u5b9a\u4e49\u548c\u542b x \u7684\u95ed\u5305\u3002\u8c03\u7528\u65f6\u65e2\u80fd\u8bfb\u5230 x\uff0c\u4e5f\u80fd\u8bfb\u5230\u4f20\u5165\u7684 n\uff0c\u63a7\u5236\u53f0\u6253\u5370 7\u3002<\/p>\n
    \n
    \u4e00\u53e5\u8bdd\u603b\u7ed3\uff1a\u95ed\u5305\u628a\u5916\u5c42\u53d8\u91cf\u5e26\u8fdb\u7a0d\u540e\u6267\u884c\u7684\u51fd\u6570\uff1a\u5b9a\u65f6\u5668\u3001\u56de\u8c03\u3001\u79c1\u6709\u72b6\u6001\u90fd\u9760\u5b83\uff1b\u5faa\u73af\u91cc\u8981\u7528 IIFE\/\u53c2\u6570\u628a\u5f53\u524d\u503c\u62f7\u8d70\uff0c\u5426\u5219\u51e0\u4e2a\u51fd\u6570\u4f1a\u5171\u4eab\u540c\u4e00\u4e2a\u53d8\u4e86\u7684 i\u3002<\/strong><\/p>\n<\/blockquote>\n<\/section>\n","protected":false},"excerpt":{"rendered":"
    \u95ed\u5305\u4e0d\u53ea\u662f\u9762\u8bd5\u540d\u8bcd\uff0c\u5b83\u4f1a\u5728\u5b9a\u65f6\u5668\u4f20\u53c2\u3001\u4e8b\u4ef6\u56de\u8c03\u3001\u79c1\u6709\u53d8\u91cf\u3001\u5faa\u73af\u7ed1\u5b9a\u548c ES6 \u504f\u51fd\u6570\u91cc\u53cd\u590d\u51fa\u73b0\u3002\u4e0b\u9762\u6309\u539f\u6587\u4e94\u4e2a […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[109,105,128],"tags":[150,139,140],"_links":{"self":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/2909"}],"collection":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2909"}],"version-history":[{"count":1,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/2909\/revisions"}],"predecessor-version":[{"id":2910,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/2909\/revisions\/2910"}],"wp:attachment":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2909"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2909"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2909"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}