Recent questions tagged Javascript

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javascript - How to save an image from canvas

Recently I've been attempting to create a photo booth by relying on Webrtc and have nearly completed all of ... onto their computer from there. 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 - Enable CORS in my React App with Node.js backend

I used create-react-app to build my react app. This app does a POST call on another API (elasticsearch), ... and how? Any help 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 Check parent checkboxes in nested ul li

I have a script that will check and uncheck all children checkboxes in a nested list. I am now trying to get it so ... 'checked', false); } }); 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 - JSFiddle wrap in onLoad?

I'm trying to understand how JSFiddle 'wraps' code in 'onLoad' based on this description: [1]: http:// ... in advance if an armature question. 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 - Calculate point between two coordinates based on a percentage

I am looking for a function that returns a point (lat, long) between two points (where I also specify their ... the first point to the second. See Question&Answers more detail:os...

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

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321 views

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javascript - Replacing values in JSON object

I have the following JSON object data returned from my apicontroller : [ {"id":2,"text":"PROGRAMME","parent":null}, {" ... ); } }); }); 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 - Merge Multiple Videos using node fluent ffmpeg

requirement is to read all the files in the directory and merge them. I am using node fluent-ffmpeg to achieve ... 26) Any 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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javascript - Has anyone got processing.js working in IE?

I'm looking for examples of processing.js working in Internet Explorer via ExplorerCanvas or similar. 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 - Disable Internet Explorer shortcut keys

EDIT: After waited a while and didn't get anything yet, I've decided to do shortcut disable thingy only for ... to popup the print window. 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 - resize bar for sidenav in angular material design.

Is there a directive in angular material to resize sidenav? There is a sidenav which shows list of clients and the ... /div> </div> 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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324 views

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javascript - How to make onclick event to work only once

what I want to do is when someone click anywhere in the page. A new window will open, but I want this to happen ... </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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322 views

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javascript - how to find coordinates of an HTML button or image, cross browser?

There was a thread on this in comp.lang.javascript recently where victory was announced but no code was posted: On an ... I did try to find it. 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 - freeing memory in three.js

my application loads a lot of meshes. to get rid of old meshes i try to dispose them. but the memory is never ... } mymesh=Array(); </script> See Question&Answers more detail:os...

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

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768 views

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javascript - Node.js and mysql Callback : query in query callback

All I want to do is insert some data if my database doesn't have that, so I put Insert SQL into my ... QueryResults.queryResult ); db.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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346 views

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javascript - jQuery error TypeError: $.event.handle is undefined

I am using latest jQuery for jQuery.masonry its throwing following error: on line 47 in jquery-1.9.1.min.js TypeError: $ ... } ); }); </script> See Question&Answers more detail:os...

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

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379 views

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javascript - Difference of .bind() to arrow function () => usage in React

Suppose that I have a function generateList() that updates the state and mapping it to an onClick to a <li>. <li ... (which I mostly use it)? See Question&Answers more detail:os...

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

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568 views

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javascript - OAuth1.0 header in Node.js

I've been using an API via postman that uses OAuth1.0, successfully. Now I'm building an API that calls this ... request. Thanks for your time. See Question&Answers more detail:os...

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

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508 views

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javascript - jQuery Scroll function after 100px

Using this script: <script> $(function() { $(window).scroll(function(){ $('#Your element id').slideUp(' ... user has scrolled 100px or more? See Question&Answers more detail:os...

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

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367 views

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javascript - How to reselect already selected option

The title seems confusing but what I want to do is... I know how to handle only if the user select ... select 'green' again nothing happens. See Question&Answers more detail:os...

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

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782 views

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javascript - emscripten: How can I solve UnboundTypeError

I am trying to build with emscripten a program which uses std::vector and std::map and the compilation is ... Thank you 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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243 views

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javascript - switch statement in Jquery and List

I would like to know if my approach is efficient and correct. my code is not working though, I don't know why. <! ... Query</a> </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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509 views

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javascript - JQuery ajax freezes ui when response is very large

When I use JQuery ajax function and the response is quite large ~1mb the ui gets frozen just before the success ... in both. 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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379 views

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javascript - Passing an arrow function vs passing the function

Say I have a function: handleChange = (e) => { this.setState({ [e.target.id]: e.target.value }); } What is ... {(e) => this.handleChange(e)} /> 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 - Run a function every time any function in class is called using JS

I have simple class like this: module.exports = class MyClass { function middleware() { console.log('call me before ... way how to do 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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857 views

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javascript - Convert Persian date to Julian or Gregorian with keith wood calendars

I created a date object with Keith Wood calendar library with Persian instant: var d = $.calendars.newDate(1393, ... a jsbin for this problem . See Question&Answers more detail:os...

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

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294 views

1 answer

javascript - Count number of elements with certain properties inside JSON

I have some JSON data: {"humans": [ { "firstName" : "Paul", "lastName" : "Taylor", "hairs": 2 }, { "firstName" ... = 7) { count_array[6]++ } }); See Question&Answers more detail:os...

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

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511 views

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javascript - Why mongodb not giving me more than 100 documents?

Why does my query not working with more than 100 documents in collection? db.collection('allowedmacs').find().toArray ... <100 all works fine. See Question&Answers more detail:os...

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

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573 views

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javascript - how do you strip html tags in textarea input

I have set up a little web application where you add post-its to a page. It's just a project to help better ... this it would be great.. 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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