bootstrap+jq+ES5 真的比react/vue/angular+ES6 low吗?

想研究 JavaScript 框架的源码，有哪些值得推荐的框架或库？有哪些可以分享的源码阅读和学习的方法？

it falls within TACE

just include jQuery from a CDN

jQuery is, last I checked, over 200k unminified.

The focus event does not bubble in Internet Explorer. Therefore, scripts that rely on event delegation with the focus event will not work consistently across browsers. As of version 1.4.2, however, jQuery works around this limitation by mapping focus to the focusin event in its event delegation methods, .live() and .delegate().

jquery绑定input的change事件 背景：在做一个登录页时，如果用户未输入验证码则无法点击登录按钮，所以想到了用input的change事件，但是在写完后发现无法监听input值的改变。 解决办法：改为了input事件

$('input[name=myInput]').change(function() { ... });1. 在输入框内容变化的时候不会触发change，当鼠标在其他地方点一下才会触发

could a few carefully-placed lines of jQuery

your 40-pound jQuery file and 83 polyfills

only jquery

You can stop the loop from within the callback function by returning false.

Are you also tired and fed up with the bulkiness of jQuery, but also don't want to have to type document.querySelector("div").appendChild(document.createTextNode("hello")); just to add some text to an element?

If you are using a JavaScript library, chances are it comes with a client HTTP API. jQuery’s $.ajax() function, for example, has been particularly popular with frontend developers. But as developers move away from such libraries in favor of native APIs, dedicated HTTP clients have emerged to fill the gap.

var jq = document.createElement('script'); jq.src = "https://ajax.googleapis.com/ajax/libs/jquery/2.1.4/jquery.min.js"; document.getElementsByTagName('head')[0].appendChild(jq); // ... give time for script to load, then type (or see below for non wait option) jQuery.noConflict();

$("#q").on("typeahead:selected", function(eventObject, suggestion, name)

$

#registration

input

[name=confirmation]

If .ready() is called after the DOM has been initialized, the new handler passed in will be executed immediately.