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283 views

1 answer

javascript - 迭代node.js中的对象键(Iterate over object keys in node.js)

Since Javascript 1.7 there is an Iterator object, which allows this: (从Javascript 1.7开始，有一个Iterator对象，允许这样：) var a={a:1,b:2, ... 将所有对象键存储在k中会产生大量开销 ) ask by stewe translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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348 views

1 answer

javascript - 如何在特定索引（JavaScript）的数组中插入项目？(How to insert an item into an array at a specific index (JavaScript)?)

I am looking for a JavaScript array insert method, in the style of: (我正在寻找一种JavaScript数组插入方法，其样式为：) arr.insert( ... jQuery中，但此时任何JavaScript实现都可以 ) ask by tags2k translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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116 views

1 answer

javascript - HTML“no-js”类的目的是什么？(What is the purpose of the HTML “no-js” class?)

I notice that in a lot of template engines, in the HTML5 Boilerplate , in various frameworks and in plain php sites there is the ... 以解释为什么经常这样做吗？) ask by Swader translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

280 views

1 answer

javascript - 如何为SVG多边形点设置动画？(How to animate SVG polygon points?)

I have created a line chart with SVG (polygon points) that I would like animated. (我用动画创建了带有SVG（多边形点）的折线图 ) I would like ... (任何提示将不胜感激，谢谢 ) ask by Keith Donegan translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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373 views

1 answer

javascript - 原型的目的是什么？ [重复](What’s the purpose of prototype? [duplicate])

Possible Duplicate: (可能重复：) Understanding prototypal inheritance in JavaScript (了解JavaScript中的原型继承) OK, So I am somewhat new to ... 所以有什么区别呢？) ask by Quinton Pike translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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408 views

1 answer

javascript - 如何克隆一个Date对象？(How to clone a Date object?)

Assigning a Date variable to another one will copy the reference to the same instance. (将Date变量分配给另一个变量会将引用复制到同一实例 ... 隆或复制Date实例？) ask by árvízt?r? tük?rfúrógép translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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304 views

1 answer

javascript - 如何用回调来衡量javascript代码的执行时间(How to measure execution time of javascript code with callbacks)

I have a piece of javascript code that I am executing using the node.js interpreter. (我有一段javascript代码，我正在使用node.js解释器执行 ) ... 码的异步性质，这将是不正确的 ) ask by Stormshadow translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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177 views

1 answer

javascript - 如何确定对象是否在数组中(How to determine if object is in array [duplicate])

This question already has an answer here: (这个问题已经在这里有了答案：) How do I check if an array includes a value in ... 例 ) no jquery (没有jQuery) ask by Caspar Kleijne translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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301 views

1 answer

javascript - 寻找哪个 <Option>在中选择<select> （没有JQuery）(Finding which <Option> is selected in <select> (without JQuery))

I have the following Element: (我有以下元素：) <select id="color" name="colorId" class="btn secondary"> <option value="347366" ... 用jQuery或任何其他类似的库）) ask by Guy Korland translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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286 views

1 answer

javascript - 在一个替换呼叫中替换多个字符(Replace multiple characters in one replace call)

Very simple little question, but I don't quite understand how to do it. (非常简单的小问题，但我不太明白该怎么做 ) I need to replace ... 还有另一种方法可以做到这一点吗？) ask by Shannon Hochkins translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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337 views

1 answer

javascript - 如何防止表格被提交？(How to prevent form from being submitted?)

I have a form that has a submit button in it somewhere. (我有一个表单，其中某处有一个提交按钮 ) However, I would like to somehow 'catch' ... 按钮，因为它是自定义控件的一部分 ) ask by Nathan Osman translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

222 views

1 answer

javascript - 如何将console.log（object）的输出保存到文件？(How to save the output of a console.log(object) to a file?)

I tried using JSON.stringify(object) , but it doesn't go down on the whole structure and hierarchy. (我尝试使用JSON.stringify( ... ，但是结构非常重要 ) ask by Eduard Florinescu translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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412 views

0 answers

javascript - 如何并行运行多个npm脚本？(How can I run multiple npm scripts in parallel?)

In my package.json I have these two scripts: (在我的package.json我有以下两个脚本：) "scripts": { "start-watch": "nodemon run-babel index ... 已经在另一个项目中使用了它 ) ask by André Pena translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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496 views

1 answer

javascript - 在for-of循环中访问ES6数组元素索引(Access to ES6 array element index inside for-of loop)

We can access array elements using a for-of loop: (我们可以使用for-of循环访问数组元素：) for (const j of [1, 2, 3, 4, 5]) ... 法来实现此目的，无论是forEach还是for-in ) ask by Abdennour TOUMI translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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438 views

1 answer

javascript - 用应该冻结其值的变量定义函数(Defining a function with a variable whose value should be frozen [duplicate])

This question already has an answer here: (这个问题已经在这里有了答案：) JavaScript closure inside loops - simple practical example ... (我怎么做？) ask by principal-ideal-domain translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

297 views

1 answer

javascript - 从fs.readFile获取数据(Get data from fs.readFile)

var content; fs.readFile('./Index.html', function read(err, data) { if (err) { throw err; } content = data; }); ... , why? (日志undefined ，为什么？) ask by karaxuna translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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240 views

1 answer

javascript - 从JavaScript中的对象获取值[重复](Get values from an object in JavaScript [duplicate])

This question already has an answer here: (这个问题在这里已有答案：) How to get all properties values of a Javascript Object (without ... 获取与属性名称无关的值？) ask by Hari krishnan translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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301 views

1 answer

javascript - 为什么parseInt（8,3）== NaN和parseInt（16,3）== 1？(Why is it that parseInt(8,3) == NaN and parseInt(16,3) == 1?)

I'm reading this but I'm confused by what is written in the parseInt with a radix argument chapter (我正在阅读这篇文章，但我 ... (16, 3)应该返回NaN) ask by Devid Farinelli translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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165 views

1 answer

javascript - 我如何解决JavaScript的parseInt八进制行为？(How do I work around JavaScript's parseInt octal behavior?)

Try executing the following in JavaScript: (尝试在JavaScript中执行以下操作：) parseInt('01'); //equals 1 parseInt('02'); //equals ... -up . (Mozilla 写得很好 ) ask by Portman translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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198 views

1 answer

javascript - 如何检索POST查询参数？(How to retrieve POST query parameters?)

Here is my simple form: (这是我的简单形式：) <form id="loginformA" action="userlogin" method="post"> <div> <label for="email">Email ... 电话时，它有效，所以..任何想法？) ask by murvinlai translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

256 views

1 answer

javascript - 在React-Native Formik onBlur（）函数中调用prop和function(Calling prop and function in React-Native formik onBlur() function)

At the moment I am trying to call a function and the formikProps in my onBlur TextInput function at the same time. (目前，我试图同 ... 't. (但事实并非如此 ) ask by louisrtz translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

544 views

1 answer

javascript - API请求返回两个对象：如何使用一个Reducer在Redux中分离状态？(API Request Returns Two Objects: How Do I Separate State in Redux with One Reducer?)

I have an API call, that is returning two objects: data and pageOutput. (我有一个API调用，它返回两个对象：data和pageOutput ) { data: "[{ ... 够清楚-乐于提供任何其他代码 ) ask by John Rogerson translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

217 views

1 answer

javascript - Express.js中res.send和res.json之间的区别(Difference between res.send and res.json in Express.js)

res.send和res.json之间的实际区别是什么，因为两者似乎都执行响应客户端的相同操作。 ask by ram translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

397 views

1 answer

javascript - jQuery禁用/启用提交按钮(jQuery disable/enable submit button)

I have this HTML: (我有这个HTML：) <input type="text" name="textField" /> <input type="submit" value="send" /> How can I do ... 用 ) Any ideas? (有任何想法吗？) ask by kmunky translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

271 views

1 answer

javascript - 如何在JavaScript中获取输入文本值(How to get an input text value in JavaScript)

How go get an input text value in JavaScript? (如何在JavaScript中获取输入文本值？) <script language="javascript" type="text/javascript"> ... why? (谁能告诉我为什么？) ask by Maria translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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173 views

1 answer

javascript - 将符号引入ES6的动机是什么？(What is the motivation for bringing Symbols to ES6?)

UPDATE : Recently a brilliant article from Mozilla came up. (更新：最近有来自Mozilla的精彩文章出现 ) Read it if you're curious. (好奇的 ... 解释我们是否真的需要JavaScript中的符号？) ask by Yanis translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

355 views

1 answer

javascript - jQuery禁用/启用提交按钮(jQuery disable/enable submit button)

I have this HTML: (我有这个HTML：) <input type="text" name="textField" /> <input type="submit" value="send" /> How can I do ... 用 ) Any ideas? (有任何想法吗？) ask by kmunky translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

163 views

1 answer

javascript - AngularJS 1.2 $注入器：modulerr(AngularJS 1.2 $injector:modulerr)

When using angular 1.2 instead of 1.07 the following piece of code is not valid anymore, why? (当使用角度1.2而不是1.07时，下面的代码不 ... 记错的话，这个问题始于angular 1.1.6 ) ask by Dawid translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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