Recent questions tagged Javascript

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javascript - Node.js heap memory limit for single object

Does v8 have limits on the heap allocations for single objects? a = new Array(1024*1024*102) fails on node ... I wonder if it's relevant. 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 - Render XML document (obtained through ajax call) to a new window

Hi I'm looking for a way to render an XML document, that I retrieve using ajax, to a new browser window. I ... . But Gabby has a solution below. 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 - map function not working in React

I am new to React JS, I was testing out some functions in fiddler. I am not sure why I get an ... , document.getElementById('container') ); 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 do I check in Firefox and Chrome if a plugin is installed

I'm using an embedded plugin in my web app to enable scanning (Dynamsoft's webscanning plugin). I'm ... plugin is installed using javascript? 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 pass the method defined on prototype to Array.map as callback

I have an array var arr = [' A ', ' b ', 'c']; and I want to trim the spaces from each of ... How function can be passed as parameter to map See Question&Answers more detail:os...

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

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184 views

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javascript - Restart a node.js app from code level

I've an app which initially creates static config files (once) and after files were written I need to ... cleaner way to handle this? 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 - JS & ES6: Access static fields from within class

In ES6, given the following example: export default class MyStyle extends Stylesheet { static Color = { mainDark: ... (the static field)? 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 Detect Non "GSM 7 bit alphabet" characters in input field

I am trying to detect if a text input field has any character that doesn't belong to the GSM 7 bit alphabet. The ... </script> </body> </html> 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 access a prototype's parent this from within a method's function

I have this class/function function Menu() { this.closetimer = 0; this.dropdown = 0; } Menu.prototype. ... object from within menuTimer()? 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 - Client download of a server generated zip file

Before somebody says, "duplicate", I just want to make sure, that folks know, that I have already reviewed these ... answers, etc. are welcome! See Question&Answers more detail:os...

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

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322 views

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javascript - Does Force-Directed Layout of d3-js support image as node?

d3 has a demo of a Force-Directed Graph Layout. Instead of circles, I want all nodes in the graph to be ... images. What am I doing wrong? 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 background color animate not working

I want to change the background color of 'exampleDiv' from the original white background to when I call the code ... 't the code above work? See Question&Answers more detail:os...

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

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389 views

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javascript - Introducing Arrow(directed), in Force Directed Graph d3

I am using the force-directed graph in the sample here - http://bl.ocks.org/mbostock/4062045 But since my ... but a little help is 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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153 views

1 answer

javascript - How to get current index in Array prototype map?

I'm using Array.prototype.map.call to store in an array a bunch of node list objects: function ... will be greatly appreciated! Thanks See Question&Answers more detail:os...

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

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361 views

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javascript - Stop other promises when Promise.all() rejects

While all the questions about Promise.all focus on how to wait for all promises, I want to go the other way -- when ... "then3" <------- WHY? See Question&Answers more detail:os...

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

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344 views

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javascript - regexp to allow only one space in between words

I'm trying to write a regular expression to remove white spaces from just the beginning of the word, not after, ... be allowed. Is it possible? See Question&Answers more detail:os...

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

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275 views

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javascript - Update Stripe data-amount

I'm implementing Stripe into a django website and everything is working except for one part. In my cart, users can ... does not update. */ } See Question&Answers more detail:os...

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

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225 views

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javascript - How to include jQuery properly in angular cli 1.0.0-rc.0?

I use jQuery-based select2 component in my AngularJS project. I had similar issue as guys here: https://github. ... it as described in story. See Question&Answers more detail:os...

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

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175 views

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javascript - Express framework giving a very strange error

I'm trying to use Express in node, install everything okay, compiled, got npm and installed express with: ... a different version from express? See Question&Answers more detail:os...

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

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163 views

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javascript - Synchronous query to Web SQL Database

I'm working on a bit of JavaScript that interacts with a client-side SQLite database, via the newish window.openDatabase(. ... output; }, . . . See Question&Answers more detail:os...

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

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281 views

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javascript - ES6 reverse iterate an array using for..of, have I missed something in the spec?

In ES6 we now have iterators and for..of to iterate them. we have some built-ins for arrays; notably keys, values and ... ; <pre id="out"></pre> See Question&Answers more detail:os...

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

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153 views

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javascript - changing CSS class definition

Suppose I have this class: .MyClass{background:red;} This class applies to several divs. I want to change the ... one color to another. Thanks. See Question&Answers more detail:os...

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

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308 views

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javascript - How to crop and upload photo using cropit jquery plugin with php

So I currently found this photo cropping plugin called cropit . Demos are here . So ... =data%3Aimage%2Fpng%3Bbase64%2CiVBORw0KGgoAAAANSUhE... See Question&Answers more detail:os...

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

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555 views

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javascript - Detect added element to DOM with Mutation Observer

I'm adding some element to DOM after drag event. I need to detect this element and the moment when this element ... Can anybody help, much thx. See Question&Answers more detail:os...

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

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227 views

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javascript - Split a string to groups of 2 chars using split?

I have this simple string : "a1a2a3" Is there any regex expression which can be used with split command so it ... which can help me using split. See Question&Answers more detail:os...

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

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252 views

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javascript - Get Firebase child nodes' names without getting their children too in Firebase response?

I have the following hierarchy on firebase, some data are hidden for confidentiality: I'm trying to get a list ... retrive these IDs directly ? See Question&Answers more detail:os...

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

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328 views

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javascript - Get only countries to autocomplete from Google Maps API

I'm using Google Maps API to get autocomplete list of cities and countries (without other details), and ... countries into my autocomplete? See Question&Answers more detail:os...

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

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559 views

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javascript - showModalDialog alternative?

I'm managing an old site that's riddled with popup windows. They're quite annoying because they keep getting lost ... and receive JSON via XHR? See Question&Answers more detail:os...

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

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