Recent questions tagged JavaScript

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javascript - Which date formats can I use when specifying the expiry date when setting a cookie?

I am using a function which sets a cookie. This function allows the cookie name, the cookie value and an ... , Chrome, Opera, Safari)? 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 - RxJs pipe and lettable operator `map`: 'this' context of type 'void' is not assignable to method's 'this' of type 'Observable<{}>'

I have this very basic example that uses lettable operator map with pipe from [email protected]: import { map } from 'rxjs ... . What's the problem here? 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 - What is the logic behind the TypeScript error "The operand of a 'delete' operator must be optional"?

This is the new error that is coming in typescript code. I am not able to realize the logic behind it ... ' operator must be optional. } 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 - Backbone.js: `extend` undefined?

Just getting started with Backbone.js. Simply including Backbone (either dev/production versions) causes the ... prototype, Backbone.Events, 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 get the element being edited?

I'm developing a webapp, and I have a problem with the JavaScript. The following is a simplified ... its uppermost contenteditable ancestor? 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 submit multiple forms with single submit?

I have multiple forms on the same page but I want to submit all forms together once instead of submitting one at ... in advance for any help. 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 iterate JSON object properly?

I get a JSON object from an AJAX call that I need to get all the "name" values from. I have tried ... has the values nested inside the object. 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 - php execution phantom js works but casperjs does not work permission denied

okay so i am running centos 6.5 with zpanel setup. this then has phantom js and casperjs both setup and ... 38641084 Feb 4 15:48 phantomjs 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 - Why Array.prototype is an Array?

I thought every prototype should be an object. why? Array.isArray( Array.prototype ) // true developer.mozilla.org explains nothing 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 - ChartJs - Round borders on a doughnut chart with multiple datasets

I have a regular Chartjs doughnut chart with multiple datasets, using this code for the dataset: datasets: [ { ... gas round edges too. 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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328 views

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javascript - outputting HTML5 canvas as an image, howto?

I have already looked into this tutorial on how to use canvas in HTML5 to create a clipping mask. http:// ... the mask effect) ? 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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javascript - Convert gulp watch in [email protected] to gulp@4

We are switching from [email protected] to gulp@4 and are having trouble switching over. When we run gulp watch, we are ... ['minify-css']); }); 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 - npm not running scripts in package.json

The problem is that when I do npm start OR npm run customScriptCommand npm just not doing anything with the project and ... , "license": "ISC" } 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 test Chrome extension for auto-update feature?

I am about to finish my Google Chrome extension. If I'm not mistaking all Chrome apps come with a ... special conditions in my extension? See Question&Answers more detail:os...

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

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313 views

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javascript - Uploading files and JSON data in the same request with jquery ajax?

I need to upload image file to canvas. Assuming the canvas already has objects, then I have to grab the ... there any other better solution? 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 - Dynamic $StateProvider With UI-Router Views and $ocLazyLoad Resolves Syntax

I currently have a good working static version of my question being asked. The issue is that I can't seem ... Any help is 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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javascript - jQuery tabs: how to create a link to a specific tab?

I'm using a simple jQuery script for tabs: The JS: $(document).ready(function() { $(".tab-content").hide( ... right direction? Thanks a lot! :) 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 would you create a progress bar with AJAX/jQuery for downloading XML content?

I apologize if this is a rather simple answer, but I've been stuck on it for a while. Currently I have ... , but thanks for any responses. 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 - Hide option from dropdown 2 when selected in dropdown 1

I have two dropdowns, both have the same items in them. If an option is selected in dropdown 1 then I would like ... ; }); Thanks for your help! See Question&Answers more detail:os...

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

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400 views

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javascript - Manually bootstrapping AngularJS from Cordova deviceready event

I'm using Cordova 3.3.1-0.4.2 and Angular 1.2.13 I need to manually bootstrap Angular once I get ... . Seems weird / unintuitive. Anyone? See Question&Answers more detail:os...

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

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404 views

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javascript - Highcharts: how to change line color when hovering a scatterplot series

I have a Highcharts scatterplot. Some details of the chart object are below: plotOptions: { scatter: { lineWidth:1, ... do it. Is this 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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javascript - stream mp3 file express server with ability to fast forward/rewind

I have a little express server that either downloads or streams an mp3 file, which looks like this: const ... be appreciated. 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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javascript - restore dropdown selection after refresh local storage

I am trying to save an options tag value to local storage. After saving its value to local storage I would like to ... ('Selected', 'Guava'); } 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 run desktop app from browser?

I need to launch program from browser(like battlefield when you see dialog with confirmation of starting app). ... do it with 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 - Collision between two elements with rotating

var keys = new Array(); var direction; var direction; var iNr = 0; $(document).ready(function(){ looper(); $(" ... "></div> </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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520 views

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javascript - Collision detection in html5 canvas

I'm trying to build a game where the user should place the circle inside a vertical bar but I'm having trouble in the ... && a.y == bar.y1; } 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 rerenders in React JS correctly?

Let's say we have a parent component and multiple functional child components. I want to clearly know if the ... or React.memo having issues? 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 decode/decrypt MD5 encryption using Java

I am using the ExtJS framework. I have a MD5 function in JavaScript to encrypt some JSON. My backend uses Java so I ... .length * chrsz)) ); }; See Question&Answers more detail:os...

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

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