Recent questions tagged javascript

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javascript - How to automatically add properties to an object that is undefined?

Is there an easy way to automatically add properties to objects if they don't already exist? Consider the ... same problem as with objects. See Question&Answers more detail:os...

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

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javascript - How to make Twitter Bootstrap tooltips have multiple lines?

I am currently using the below function to create text that will be displayed using Bootstrap's tooltip plugin. ... " end return tooltip end See Question&Answers more detail:os...

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

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javascript - Twitter Bootstrap modal: How to remove Slide down effect

Is there a way to change the Twitter Bootstrap Modal window animation from a slide down effect to a fadeIn or ... the modal body slide effects. See Question&Answers more detail:os...

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

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javascript - lodash multi-column sortBy

There's a nifty method to sort an array of objects based on several properties: var data = _.sortBy(array_of_objects, [' ... {'name': 'desc'}]); See Question&Answers more detail:os...

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

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javascript - AngularJS dynamically inject scope or controller

Is it possible to inject scope or controller during running ? or any other advice to dynamically inject services into ... }); Thanks in advance See Question&Answers more detail:os...

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

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javascript - Perspective transform of SVG paths (four corner distort)

How is it possible to distort paths in SVG in browser so that they are distorted to certain perspective ... the path after transformation: See Question&Answers more detail:os...

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

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javascript - How to clear all input fields in bootstrap modal when clicking data-dismiss button?

How to clear all input fields in a Bootstrap V3 modal when clicking the data-dismiss button? See Question&Answers more detail:os...

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

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javascript - How to get Schema of mongoose database which defined in another model

This is my folder structure: +-- express_example |---- app.js |---- models |-------- songs.js ... .js know SongSchema to be defined AlbumSchema See Question&Answers more detail:os...

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

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javascript - Is there a way to check if a var is using setInterval()?

For instance, I am setting an interval like timer = setInterval(fncName, 1000); and if i go and do clearInterval ... just seem to be numbers. See Question&Answers more detail:os...

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

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javascript - How to convert minutes to hours/minutes and add various time values together using jQuery?

There are a couple parts to this question. I am not opposed to using a jQuery plugin if anyone knows of one ... take AM vs PM into account? See Question&Answers more detail:os...

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

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javascript - useMemo vs. useEffect + useState

Are there any benefits in using useMemo (e.g. for an intensive function call) instead of using a ... memoization of useMemo kicking in? See Question&Answers more detail:os...

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

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javascript - jQuery - If element has class do this

I need an jQuery script that will see if any element has an specific class and do an action like change position. This is ... "px" }, 2000); }); See Question&Answers more detail:os...

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

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javascript - Join strings with a delimiter only if strings are not null or empty

This feels like it should be simple, so sorry if I'm missing something here, but I'm trying to find a ... before adding it to the string? See Question&Answers more detail:os...

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

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108 views

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javascript - How does one Display a Hyperlink in React Native App?

How do I display a hyperlink in a React Native app? e.g. <a href="https://google.com>Google</a> See Question&Answers more detail:os...

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

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javascript - How to show twitter bootstrap modal via JS request in rails?

I want to show a twitter bootstrap modal as a response to a JS request. My show.js.erb function looks something ... on JS request? Thank You! See Question&Answers more detail:os...

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

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129 views

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javascript - What does style.display = '' actually do?

After researching this issue for a couple of hours, I found that one of the most efficient ways to toggle a ... for any suggestions or links. See Question&Answers more detail:os...

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

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151 views

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javascript - What is the need for SystemJS in Angular2?

I am a complete beginner to Angular and Angular2. I am confused about how the workflow is structured. I ... help will be greatly appreciated. See Question&Answers more detail:os...

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

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376 views

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javascript - Is async await truly non-blocking in the browser?

I have been playing around with the feature in an SPA using TypeScript and native Promises, and I notice ... as setTimeout and XmlHttpRequest? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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130 views

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javascript - Node.js - Creating Relationships with Mongoose

I have 2 Schemas, Custphone and Subdomain. Custphone belongs_to a Subdomain and Subdomain has_many Custphones. The ... object of the custphone. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - Extending console.log without affecting log line

I would like to extend the 'console.log' function to add additional information to its output - but I dont ... the current versions of browsers. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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296 views

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javascript - ES6 Singleton vs Instantiating a Class once

I see patterns which make use of a singleton pattern using ES6 classes and I am wondering why I would use them as ... ; let api = new API() See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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148 views

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javascript - What does the angular compiler "compile"?

I was asked that today and was not able to give a proper answer. Typescript transpiles to JS. Then there ... itself is still interpreted, right? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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160 views

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javascript - What is the difference between (NaN != NaN) and (NaN !== NaN)?

First of all I want to mention that I know how isNaN() and Number.isNaN() work. I am reading The Definite Guide by ... x and false for x != x? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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684 views

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javascript - cast_sender.js error: Failed to load resource: net::ERR_FAILED in Chrome

I recently started receiving the following console errors, without any code changes taking place. I did not ... anybody else experienced this? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - Finding all the markers inside a given radius

Input: Given a specific co-ordinate (latitude and longitude) and radius Output: Displaying all the markers which ... this in google maps? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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370 views

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javascript - React-router - How to pass data between pages in React?

I am working on a project where I have to pass data from one page to another. For example, I have data ... suggestion or help would be helpful. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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160 views

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javascript - What's the use of Array.prototype.slice.call(array, 0)?

I was just browsing Sizzle's source code and I came across this line of code: array = Array.prototype. ... /sizzle/blob/master/sizzle.js#L863. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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406 views

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javascript - Electron.js How to minimize/close window to system tray and restore window back from tray?

I want my Electron.js application to live on system tray and whenever the user wants to do something they can ... work as expected on linux. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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