Recent questions tagged JavaScript

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javascript - MongoDB queries optimisation

I wish to retrieve several information from my User model that looks like this: var userSchema = new ... performance / optimisation. 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 - await Promise.reject or throw error to bail out?

I am refactoring my promise chaining codes to async/await style. One of the reasons to do that is I want a single ... catch (error) { ... } 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 create async function using NAPI that return Promises

i am trying to create node module using NAPI .I have to create async function that returns promises. I don ... get blocked and return promises ? 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 - change all image sources jquery

I want to change all image sources if they fail to load. Some companies block access to dropbox so I like to use an ... ); } </script> </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 - firebase serve and debugging functions?

I ran firebase serve --only-functions Then ran functions inspect addMessage So I could debug the addMessage function. Debugging ... )); }); }); 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 - add cursor: pointer to audio element

got a quick one: how do I add a cursor style to my <audio> controls? When I add them via css the cursor ... that shouldn't come into play... 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 - DataTables - Open all Child Rows on Page Load

At the moment my table has child rows with a toggle to open each row in column 1. (I found this function online ... .addClass('shown'); } }); 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 Components.classes is undefined?

In Firefox when I am running the following code: var clazz = Components.classes["@mozilla.org/messenger;1"]; ... .org/en/docs/Components.classes See Question&Answers more detail:os...

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

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560 views

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javascript - Sort the series data for every X-Axis in Highcharts

I need to sort the data of series from largest to smallest for every series. Sample fiddle series: [{ name: 'John', data: [ ... 4}, {y: 1 }] }] 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 split Node.js files in several files

I have this code: var express = require("express"); var app = express(); var path = require("path"); app ... Node. How can I separate codes? 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 - Styling d3´s tooltip

I implement a tooltip over circles placed through d3 on a leafletmap like this: var tooltip = d3.select("body ... italic, different colors etc? 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 - Handling <?xml-stylesheet> similar to <link rel="stylesheet">?

During investigation of advantages and disadvantages of attaching CSS with <?xml-stylesheet> processing instruction, I ... xml-stylesheet> PI? See Question&Answers more detail:os...

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

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299 views

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javascript - how to check function is called or not in angular?

I am trying to test component in angular .following thing I need to test service function is called or not ... read property 'injector' of null See Question&Answers more detail:os...

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

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468 views

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javascript - How to generate a random weighted distribution of elements

I would like to return an array which has a set of unique elements randomly distributed according to custom frequency ... less often than C. See Question&Answers more detail:os...

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

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325 views

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javascript - Ember data changing primaryKey for a model from id to something else

Currently I have a model setup like this App.Specialty = DS.Model.extend({ //specialty_id: attr(), ... be searching for specialty_id instead? See Question&Answers more detail:os...

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

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453 views

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javascript - How to get the combination of array values from nested arrays in an array of objects

I have an array of objects with the following structure: var varientSections = [ { type: "frame", ... ); console.log(updatedVarientDetails); See Question&Answers more detail:os...

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

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405 views

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javascript - add overlay in specific position in HTML map

I have a static image made interactive using the concept of HTML maps. Coordinates of the image set by ... .net/woke_mushroom/2u3kbnv9/14/ See Question&Answers more detail:os...

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

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730 views

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javascript - Blur Select2 input after close

I want the select2 element to lose the focus when the select2-close event is triggered, what I have tried so ... ) non f these worked. JSFiddle See Question&Answers more detail:os...

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

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356 views

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javascript - Why wouldn't you use explicit annotations when defining controllers in AngularJS?

I am new to AngularJS and learning about the two styles of writing controller functions. It seems as though the only ... function($scope) {}]); See Question&Answers more detail:os...

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

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829 views

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javascript - How to get duration of video when I am using filereader to read the video file?

I am trying to upload a video to server, and on client end. I am reading it using FileReader's ... somebody please suggest me something? See Question&Answers more detail:os...

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

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483 views

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javascript - Show and hide dynamically fields in Django form

I have a form in Django: views.py: class SearchForm(forms.Form): type = forms.ChoiceField(choices = ...) list1 = ... here, but I don't know 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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726 views

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javascript - How do I prevent my dropdown from closing when clicking inside it?

I'm using Bootstrap to create a dropdown for my website, but I am having some problems with it. On my website, if ... ="dLabel"> </ul> </div> See Question&Answers more detail:os...

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

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504 views

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javascript - Rotating a div how to set around which point to rotate?

My javascript is: $(function() { var $elie = $(".circle"); rotate(0); function rotate(degree) { $elie.css({ ... > <div class="circle"> </div> 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 - From an array of objects, how to return property `b` of the object that has the highest property `a`?

I need to get the value of the property b from the object with the highest value of the property a. var ... ; var blah = getByValue(myArr); See Question&Answers more detail:os...

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

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649 views

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javascript - Moment.js isBefore function not working as expected

My console log is giving me an unexpected output. var bool = (moment("2017-04-08 23:00:00"). ... something I'm not understanding correctly? See Question&Answers more detail:os...

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

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646 views

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javascript - How to change the querystring when I submit my GET form using JQuery?

Suppose that I have a simple form in my page like this : <form action="/properties/search" method=" ... window.location.search = querystring; 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 - Unlink listener for parent does it applied to children in Firebase

I am using firebase to synch data in a real time app. After some treatment, I want to unlink all listeners ... I put off each level separately? See Question&Answers more detail:os...

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

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402 views

1 answer

javascript - Session management in Nodejs

I am beginner of NodeJS.And just started a simple project where I need a session management concept. So How to manage ... the Port 3000"); }); See Question&Answers more detail:os...

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

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