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javascript - event.preventDefault（）与return false(event.preventDefault() vs. return false)

When I want to prevent other event handlers from executing after a certain event is fired, I can use one of two techniques. (当我 ... way? (有什么更好的方法？) ask by RaYell translate from so...

asked Feb 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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305 views

1 answer

javascript - 使用ajax请求下载文件(download file using an ajax request)

I want to send an "ajax download request" when I click on a button, so I tried in this way: (当我单击按钮时，我想发送 ... Thank you in advance (先感谢您) ask by Manuel Di Iorio translate from so...

asked Feb 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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282 views

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javascript - Lambda将SQL传递到RDS数据API时出错(Error in Lambda Passing SQL to RDS Data API)

In following a tutorial, I am trying to set up an AWS Lambda function that will pass a SQL query to an AWS RDS Aurora Serverless ... ，和/或上述错误是什么意思？) ask by OJT translate from so...

asked Feb 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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277 views

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javascript - String.slice和String.substring有什么区别？(What is the difference between String.slice and String.substring?)

Does anyone know what the difference is between these two methods: (有谁知道这两种方法之间的区别是什么：) String.protorype.slice String.protorype.substring ask by tmim translate from so...

asked Feb 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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481 views

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javascript - 如何动态合并两个JavaScript对象的属性？(How can I merge properties of two JavaScript objects dynamically?)

I need to be able to merge two (very simple) JavaScript objects at runtime. (我需要能够在运行时合并两个（非常简单的）JavaScript对象 ) For ... 只需合并平面对象上的方法即可 ) ask by community wiki translate from so...

asked Feb 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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477 views

1 answer

javascript - 将命令行参数发送到npm脚本(Sending command line arguments to npm script)

The scripts portion of my package.json currently looks like this: (我的package.json的scripts部分当前如下所示：) "scripts": { " ... this possible? (这可能吗？) ask by arnemart translate from so...

asked Feb 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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348 views

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javascript - 非异步函数内部的异步函数与异步函数？(async function vs async function inside non async function?)

function scaryClown() { return new Promise(resolve => { setTimeout(() => { resolve('a') }, 1000) }); } function msg2() ... 和msg2这两个函数有什么区别？) ask by Henok Tesfaye translate from so...

asked Feb 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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307 views

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javascript - 如何检查某人是否有特定角色(How to check if someone has a certain role)

Ok, I know that there are similar questions out there but no matter what I try I get the same result. (好的，我知道 ... the OverBot-Admin role!") } ask by OverThrow translate from so...

asked Feb 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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171 views

1 answer

javascript - 如何在Firebase的authStateObserver中调用.isNewUser（）(How to call .isNewUser() in authStateObserver in firebase)

Its not at all clear in the documentation how to check if a freshly logged in user has logged into my web app ... 用程序中的javascript中 ) ask by michael powers translate from so...

asked Feb 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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431 views

1 answer

javascript - 获取对象的属性名称(Getting the object's property name)

I was wondering if there was any way in JavaScript to loop through an object like so. (我想知道JavaScript中是否有任何方法可以像这样遍历一个对 ... can offer. (谢谢你的尽心帮助 ) ask by Olical translate from so...

asked Feb 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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414 views

1 answer

javascript - 如何从React中的事件对象访问自定义属性？(How to access custom attributes from event object in React?)

React is able to render custom attributes as described at http://facebook.github.io/react/docs/jsx-gotchas.html : (React能够呈现自 ... . (这些都没有奏效 ) ask by andriy_sof translate from so...

asked Feb 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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165 views

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javascript - 抓取错误(Catching a fetch error)

My understanding is that a piece of code throwing error anywhere in callstack can be caught at final catch block. (我的理解是 ... 错误有什么特别之处？) ask by DrEarnest translate from so...

asked Feb 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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542 views

1 answer

javascript - JavaScript单击处理程序在for循环中没有按预期工作[duplicate](JavaScript click handler not working as expected inside a for loop [duplicate])

This question already has an answer here: (这个问题在这里已有答案：) How do JavaScript closures work? (JavaScript闭包如何工作？) 86 ... } ); } jsfiddle (的jsfiddle) ask by JS-coder translate from so...

asked Feb 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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123 views

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javascript - 如何在Jest中使用ESLint(How to use ESLint with Jest)

I'm attempting to use the ESLint linter with the Jest testing framework. (我正在尝试将ESLint linter与Jest测试框架一起使用 ) Jest tests run ... 式来应用规则，或者类似的方法？) ask by Retsam translate from so...

asked Feb 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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328 views

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javascript - 如何计算数组中某些元素的数量？(How to count the number of certain element in an array?)

If I have an array [1, 2, 3, 5, 2, 8, 9, 2] , I would like to check how many 2 s there are in the array. (如果我有 ... JavaScript中不使用for循环进行循环的最优雅的方法是什么？) ask by Leem translate from so...

asked Feb 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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256 views

1 answer

javascript - 如何使React Portal与React Hook一起使用？(How can I make React Portal work with React Hook?)

I have this specific need to listen to a custom event in the browser and from there, I have a button that will open a ... <div id="root"></div> ask by bsides translate from so...

asked Feb 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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247 views

1 answer

javascript - 'setInterval'vs'setTimeout'[复制]('setInterval' vs 'setTimeout' [duplicate])

This question already has an answer here: (这个问题在这里已有答案：) setTimeout or setInterval? (setTimeout还是setInterval？) ... JavaScript? (在JavaScript？) ask by Pranay Rana translate from so...

asked Feb 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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260 views

1 answer

javascript - 如何使React Portal与React Hook一起使用？(How can I make React Portal work with React Hook?)

I have this specific need to listen to a custom event in the browser and from there, I have a button that will open a ... <div id="root"></div> ask by bsides translate from so...

asked Feb 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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534 views

1 answer

javascript - 如何在JavaScript客户端中对网站进行屏幕截图/ Google是如何做到的？（无需访问硬盘）[重复](How to screenshot website in JavaScript client-side / how Google did it? (no need to access HDD) [duplicate])

This question already has an answer here: (这个问题已经在这里有了答案：) Using HTML5/Canvas/JavaScript to take in-browser screenshots 4 ... 某些屏幕上报告错误）) ask by Pawe? Szymański translate from so...

asked Feb 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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169 views

1 answer

javascript - 使用JavaScript获取DIV的内容(Get content of a DIV using JavaScript)

I have two DIV's called DIV1 and DIV2 and DIV1 consists of dynamic content and DIV2 is empty. (我有两个名为DIV1和DIV2的DIV，DIV1由动态 ... ="DIV2"> </div> </body> ask by lock translate from so...

asked Feb 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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193 views

1 answer

javascript - 使用map更新对象（内联es6）(Update an object with map ( inline es6 ))

I have this code , it's work (我有此代码，这是工作) series.map( el => { if ( !el.label ) { el.label = getTranslation(messages, ... )}) but it didn't work (但这没用) ask by Seb translate from so...

asked Feb 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

456 views

1 answer

javascript - 如何检测浏览器后退按钮事件-跨浏览器(How to Detect Browser Back Button event - Cross Browser)

How do you definitively detect whether or not the user has pressed the back button in the browser? (您如何确定用户是否按下浏览器中的后退按钮？) ... 什么浏览器后退按钮不触发自己的事件！？) ask by Xarus translate from so...

asked Feb 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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311 views

1 answer

javascript - 如何在加载页面时运行函数？(How to run a function when the page is loaded?)

I want to run a function when the page is loaded, but I don't want to use it in the <body> tag. (我想在页面加载时运行一个函数 ... ? (那么如何在加载页面时运行它？) ask by Claes Gustavsson translate from so...

asked Feb 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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605 views

1 answer

javascript - 错误：“ [Vue警告]：属性或方法” posts”未在实例上定义，但在渲染期间被引用。”以及“ books”(Errors: “[Vue warn]: Property or method ”posts“ is not defined on the instance but referenced during render.” and also for “books”)

enter image description here I am making an app in Nuxt and vue using storyblok as my CMS. (在此处输入图像描述我正在使用Storyblok作为CMS在 ... 助，我将不胜感激 ) Thanks (谢谢) ask by clean translate from so...

asked Feb 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

341 views

1 answer

javascript - 在Chrome控制台上调试JavaScript函数(debug javascript function on chrome console)

Two Questions about debugging in chrome console : (有关在chrome控制台中进行调试的两个问题：) How can I debug function that I am writing ... 卡？) Thank you. (谢谢 ) ask by dudi du translate from so...

asked Feb 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

442 views

1 answer

javascript - 单击按钮时使用jQuery播放音频文件(Play an audio file using jQuery when a button is clicked)

I am trying to play an audio file when I click the button, but it's not working, my html code is: (我点击按钮时尝试播放音频文件，但它 ... too. (我也为此创造了一个小提琴 ) ask by Suresh Pattu translate from so...

asked Feb 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

381 views

1 answer

javascript - 如何在JavaScript中创建二维数组？(How can I create a two dimensional array in JavaScript?)

I have been reading online and some places say it isn't possible, some say it is and then give an example and others refute ... [1]或myArray[0,1]吗？）) ask by Diego translate from so...

asked Feb 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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625 views

1 answer

javascript - 从字符串中删除不是字母数字字符。遇到[]字符时遇到问题(Remove not alphanumeric characters from string. Having trouble with the [] character)

I want to convert the following string to the provided output. (我想将以下字符串转换为提供的输出 ) Input: "\test ... ); Output 1: "testredbobfrednew" ask by Bobby Cannon translate from so...

asked Feb 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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