arrayLike2:"c",};console.log(Array.prototype.some.call(arrayLike,(x)=>typeofx==="number"));// false Specification ECMAScript® 2026 Language Specification #sec-array.prototype.some 参见 core-js中Array.prototype.every的 polyfill 索引集合 ...
Sign in to comment Metadata AssigneesNo one assigned Labels Content:WebExtWebExtensions docs TypeNo type ProjectsNo projects MilestoneNo milestone RelationshipsNone yet Development Code with Copilot Agent Mode Add await keyword to some JavaScript example codesmdn/content Participants Issue actions...
Javascript的Array.some()方法: Array.some()方法會呼叫回呼函式來對陣列中所有的元素進行測試,若是有任何一個元素測試通過, 則立即返回true,不再對其他元素進行測試。 對於被刪除的索引,或是未被指定初始值得元素,some()方法並不會為其呼叫回呼函式進行測試。 some()方法定義在ECMA-262第五版中,可能會有些瀏覽...
if we eventually break out of the loop through some means MDN URL https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Iterator/take What specific section or headline is this issue about? Using take() with a for...of loop What information was incorrect, unhelpful,...
or Log in Site links Home Feature index Browser usage table Feature suggestion list Caniuse data on GitHub Legend Green ✅ = Supported Red ❌ = Not supported Greenish yellow ◐ = Partial support Gray ﹖ = Support unknown ...
javascript ECMAScript模板文字(如“some ${string}”)不起作用JavaScript * 模板文本 * 需要反引号，而...
Array.prototype.some()is supported in IE9+, and there is a polyfill shown onthe MDN page. Now on to this week's tools! Support Web Tools Weekly:384 pages of CSS for $7 JavaScript Utilities and Mini Libraries LazyJsonUndoRedo "A 'drop in' history handler with automatic undo/redo functi...
I can open another part of the app without leaving my context. You’re deep in an app. You maybe browsed for movies, navigated to the 8th section, horizontally scrolled until you found the one you’re looking for. Before you hit play, you want to quickly check the name of that other...
MDN states that they do, but I wanted to see some numbers. So I ran a handful of quick n’ dirty tests in the Firefox console to check it out. For the sake of organization, here’s the setup:function bench(label, test, loops) { loops = +loops || 10; let t = []; for (let...
actual syntax errors, you may use the onerror event. TypeError An error in the expected var...