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javascript - 初學(xué) React Router 請(qǐng)教在 ES6 下 如何實(shí)現(xiàn)路由跳轉(zhuǎn)前確認(rèn)

根據(jù) React Router 的官方文檔： React Router 提供一個(gè) routerWillLeave 生命周期鉤子，這使得 React 組件可以攔截正在發(fā)生的跳轉(zhuǎn)，或在離開 route 前提示用戶 鏈接：跳轉(zhuǎn)...

From [JavaScriptdiscussion group] 2017-04-11 12:57:34 0  2  1167

javascript - 回調(diào)函數(shù)中this指代問題

{代碼...}

From [JavaScriptdiscussion group] 2017-04-10 12:41:18 0  10  1167

javascript - Is there a way to play videos in the background in iOS WeChat?

Is there a way to play the video in the background in WeChat on iOS? Currently, when the video is played and c...

From [JavaScriptdiscussion group] 2017-07-05 11:06:56 0  2  1166

javascript - if determines whether to use else statement or return to execute another condition

{code...} Which one is better? The second one looks clearer, with less indentation, but one more character tha...

From [JavaScriptdiscussion group] 2017-06-12 09:31:02 0  6  1166

javascript - 使用requirejs說變量未定義是什么問題？

{代碼...} ReferenceError: a is not defined 這個(gè)是報(bào)的錯(cuò)誤 請(qǐng)問是什么問題啊 a不是定義了嗎？

From [JavaScriptdiscussion group] 2017-04-11 11:36:06 0  1  1166

前端 - javascript自動(dòng)補(bǔ)全

操作系統(tǒng)：windows 8 目前電腦上的IDE:zend、Notepad++ 不知道zend和notepad在編寫javascript的時(shí)候，可否設(shè)置自動(dòng)補(bǔ)全呢？ 如果不能的話，那有沒有插件可以實(shí)現(xiàn)？ 我主要是使用ze...

From [JavaScriptdiscussion group] 2017-04-10 14:33:37 0  13  1166

Canvas 全是幀動(dòng)畫嗎？ 為啥沒有像CSS3那種緩動(dòng)動(dòng)畫？

（ 比如 ，畫了一個(gè)方塊 ，然后設(shè)置他的目標(biāo)位置 ，然后，他自己就move過去 ，設(shè)置一個(gè)旋轉(zhuǎn)，設(shè)置時(shí)間，他就自己轉(zhuǎn)過去。）全是 幀動(dòng)畫（畫了一個(gè)方塊，然后用定時(shí)器，先清理畫布，再重新繪制變動(dòng)了位置的方塊，然后...

From [JavaScriptdiscussion group] 2016-11-07 15:12:08 0  1  1166

Dynamically generate span based on li

Dynamically generate span tags based on the number of li tags, and clicking the span tag will also display the...

From [JavaScriptdiscussion group] 2019-03-25 16:52:03 0  2  1165

javascript - Native JS and jQuety about setting image carousel timer

Regarding the image carousel, setting up automatic playback: If you use native JS code, I currently know two m...

From [JavaScriptdiscussion group] 2017-07-05 10:58:00 0  1  1165

javascript - How to make the online course video still playable after the mouse is moved away

The school has started online classes. I didn’t listen to them before, but now I want to read them. However, w...

From [JavaScriptdiscussion group] 2017-05-19 10:24:37 0  2  1165

javascript - Questions about ajax asynchronous

Async defaults to true, which is an asynchronous mode. After $.Ajax is executed, the script behind ajax will c...

From [JavaScriptdiscussion group] 2017-07-05 10:52:26 0  4  1164

JavaScript: Enter the selector of the specified type (only three simple CSS selectors such as id, class, and tagName are supported)

1. Write a JavaScript function and input a selector of a specified type (it only needs to support three simple...

From [JavaScriptdiscussion group] 2017-06-26 10:57:53 0  4  1164

javascript - Compatibility WeChat public account development

WeChat public account development Why does copying in the clipboard.js plug-in not work in the IOS system? How...

From [JavaScriptdiscussion group] 2017-06-12 09:31:05 0  1  1164

javascript - WeChat sharing H5, how to achieve this blur effect with background color?

The effect of our normal sharing is as follows. The sharing I got during the trial was as above with a backgro...

From [JavaScriptdiscussion group] 2017-06-12 09:29:10 0  3  1164

console - JavaScript中，使用for循環(huán)輸出如下圖形（等腰三角形，和平行四邊形）？原理是啥？

JavaScript中，使用for循環(huán)輸出如下圖形（等腰三角形，和平行四邊形）？原理是啥？最近在學(xué)習(xí)for循環(huán)，但是數(shù)學(xué)不是很好，老師說和數(shù)學(xué)沒有太大關(guān)系，但是我實(shí)在想不出來，求教各位了； 1；只是使用for循環(huán)，（最....

From [JavaScriptdiscussion group] 2017-04-11 13:11:59 0  5  1164