{"id":620,"date":"2024-11-20T11:56:44","date_gmt":"2024-11-20T03:56:44","guid":{"rendered":"https:\/\/womeifei.cn\/?p=620"},"modified":"2024-11-20T11:56:44","modified_gmt":"2024-11-20T03:56:44","slug":"js%e8%bf%9b%e9%98%b6-callapplybind%e5%a4%84%e7%90%86this","status":"publish","type":"post","link":"https:\/\/womeifei.cn\/index.php\/2024\/11\/20\/js%e8%bf%9b%e9%98%b6-callapplybind%e5%a4%84%e7%90%86this\/","title":{"rendered":"JS\u8fdb\u9636-call,apply,bind\u5904\u7406this"},"content":{"rendered":"\n<p class=\"has-large-font-size wp-block-paragraph\"><strong>\u4e00.call() (\u4e86\u89e3)<\/strong> <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f7f\u7528call\u65b9\u6cd5\u8c03\u7528\u51fd\u6570 \u540c\u65f6\u6307\u5b9a\u88ab\u8c03\u7528\u51fd\u6570\u4e2dthis\u7684\u503c <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8bed\u6cd5:fun.call(\u60f3\u8981\u6307\u5411\u7684\u5bf9\u8c61,\u53c2\u6570)<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/womeifei.cn\/wp-content\/uploads\/2024\/11\/image-167.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"396\" height=\"258\" data-original=\"https:\/\/womeifei.cn\/wp-content\/uploads\/2024\/11\/image-167.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-621\" style=\"width:457px;height:auto\"  sizes=\"auto, (max-width: 396px) 100vw, 396px\" \/><\/div><\/figure>\n\n\n\n<p class=\"has-large-font-size wp-block-paragraph\"><strong>\u4e8c.apply()<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f7f\u7528apply\u65b9\u6cd5\u8c03\u7528\u51fd\u6570 \u540c\u65f6\u6307\u5b9a\u88ab\u8c03\u7528\u51fd\u6570\u4e2dthis\u7684\u503c<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8bed\u6cd5:fun.apply(\u60f3\u8981\u6307\u5411\u7684\u5bf9\u8c61,[argsArray]) <\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u4f20\u5165\u53c2\u6570\u5fc5\u987b\u662f\u4e00\u4e2a\u6570\u7ec4<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/womeifei.cn\/wp-content\/uploads\/2024\/11\/image-168.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"627\" height=\"289\" data-original=\"https:\/\/womeifei.cn\/wp-content\/uploads\/2024\/11\/image-168.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-622\"  sizes=\"auto, (max-width: 627px) 100vw, 627px\" \/><\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e3b\u8981\u8ddf\u6570\u7ec4\u6709\u5173\u7cfb \u6bd4\u5982\u53ef\u4ee5\u6c42\u6570\u7ec4\u6700\u5927\u503c<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">const max=<strong>Math.max<\/strong>.<strong>apply<\/strong>(Math,[1,3,2,5])<\/p>\n\n\n\n<p class=\"has-large-font-size wp-block-paragraph\"><strong>\u4e09.bind()<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">bind()\u65b9\u6cd5\u4e0d\u4f1a\u8c03\u7528\u51fd\u6570 \u4f46\u80fd\u6539\u53d8\u51fd\u6570\u5185\u90e8this\u6307\u5411<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u8fd4\u56de\u7531\u6307\u5b9a\u7684this\u503c\u548c\u521d\u59cb\u5316\u53c2\u6570\u6539\u9020\u7684\u539f\u62f7\u8d1d\u51fd\u6570(\u65b0\u51fd\u6570)<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/womeifei.cn\/wp-content\/uploads\/2024\/11\/image-169.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"639\" height=\"340\" data-original=\"https:\/\/womeifei.cn\/wp-content\/uploads\/2024\/11\/image-169.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-623\" style=\"width:456px;height:auto\"  sizes=\"auto, (max-width: 639px) 100vw, 639px\" \/><\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u5f53\u6211\u4eec\u53ea\u60f3\u6539\u53d8this\u6307\u5411 \u5e76\u4e14\u4e0d\u60f3\u4f7f\u7528\u8fd9\u4e2a\u51fd\u6570\u65f6 \u53ef\u4ee5\u4f7f\u7528bind \u6bd4\u5982\u6539\u53d8\u5b9a\u65f6\u5668\u5185\u90e8\u7684this\u6307\u5411<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5c0f\u6848\u4f8b:\u6709\u4e00\u4e2a\u6309\u94ae \u70b9\u51fb\u7acb\u5373\u5c31\u7981\u7528 2\u79d2\u540e\u5f00\u542f<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/womeifei.cn\/wp-content\/uploads\/2024\/11\/image-170.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"811\" height=\"162\" data-original=\"https:\/\/womeifei.cn\/wp-content\/uploads\/2024\/11\/image-170.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-624\"  sizes=\"auto, (max-width: 811px) 100vw, 811px\" \/><\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u6211\u4eec\u60f3\u8981\u901a\u8fc7this.disabled\u63a7\u5236\u6309\u94ae\u7684\u7981\u7528\u4e0e\u5426 \u800c\u5b9a\u65f6\u5668\u51fd\u6570\u672c\u8d28\u4e0a\u7531window\u8c03\u7528 \u5176this\u6307\u5411window<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6240\u4ee5\u6211\u4eec\u5c31\u8981\u901a\u8fc7bind\u6539\u53d8\u5b9a\u65f6\u5668\u51fd\u6570this\u6307\u5411 window &#8212; > button (\u7ed3\u5408\u524d\u9762\u770b\u8fd9\u91cc\u7684this\u5c31\u662fbutton)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e00.call() (\u4e86\u89e3) \u4f7f\u7528call\u65b9\u6cd5\u8c03\u7528\u51fd\u6570 \u540c\u65f6\u6307\u5b9a\u88ab\u8c03\u7528\u51fd\u6570\u4e2dthis\u7684\u503c \u8bed\u6cd5:fun.call [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10,1],"tags":[],"class_list":["post-620","post","type-post","status-publish","format-standard","hentry","category-javascript","category-1"],"_links":{"self":[{"href":"https:\/\/womeifei.cn\/index.php\/wp-json\/wp\/v2\/posts\/620","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/womeifei.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/womeifei.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/womeifei.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/womeifei.cn\/index.php\/wp-json\/wp\/v2\/comments?post=620"}],"version-history":[{"count":1,"href":"https:\/\/womeifei.cn\/index.php\/wp-json\/wp\/v2\/posts\/620\/revisions"}],"predecessor-version":[{"id":625,"href":"https:\/\/womeifei.cn\/index.php\/wp-json\/wp\/v2\/posts\/620\/revisions\/625"}],"wp:attachment":[{"href":"https:\/\/womeifei.cn\/index.php\/wp-json\/wp\/v2\/media?parent=620"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/womeifei.cn\/index.php\/wp-json\/wp\/v2\/categories?post=620"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/womeifei.cn\/index.php\/wp-json\/wp\/v2\/tags?post=620"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}