Recent questions tagged Javascript

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javascript - Getter/setter in constructor

I recently read about the fact that there is a possibility of defining getters/setters in JavaScript. It seems ... and extending the prototype? 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 Title Case

Is there a built in way with jQuery to "title case" a string? So given something like bob smith, it turns into "Bob Smith"? See Question&Answers more detail:os...

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

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145 views

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javascript - Is jQuery traversal preferred over selectors?

Is using $("#vacations").find("li").last() is a better practice than $("#vacations li:last")? Background ... and will be faster than traversal? 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 long should you debounce text input

Lets say we have a simple example as below. <input id="filter" type="text" /> <script> function reload() ... anyone done any studies on 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 - Handlebars.js: How to access parent index in nested each?

How to access parent @index value in each-loop? Tried the following: {{#each company}} {{#each employee}} {{../ ... : Expecting 'ID', got 'DATA' 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 - Where condition for joined table in Sequelize ORM

I want to get query like this with sequelize ORM: SELECT "A".*, FROM "A" LEFT OUTER JOIN "B" ON "A"." ... or I should just stick to raw queries? 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 clear all intervals?

I am using varName = setInterval(function() { ... }, 1000); to set a couple of intervals in a jquery ... new function(func, interval) { } See Question&Answers more detail:os...

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

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188 views

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javascript - jquery: get id from class selector

Is there any way that I can get the id of an element from something like: <a href="#" class="test" id=" ... of the elements I get back the id? 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 - Multiple populates - mongoosejs

Just a simple query, for example with a double ref in the model. Schema / Model var OrderSchema = new Schema ... is get two populates working ? 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 - React Router Authorization

What are the best practices for authorization checking prior to a component mounting? I use react-router 1.x Here are my ... </h1> ); } }); See Question&Answers more detail:os...

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

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318 views

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javascript - Most efficient way to iterate over all DOM elements

Unfortunately I need to iterate over all the DOM elements of a page and I'm wondering what the most efficient ... over child nodes in parallel. 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 - Should I be removing console.log from production code?

I currently have this JS statement everywhere in my code: window.console && console.log("Foo"); I am wondering ... being sent to the client. See Question&Answers more detail:os...

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

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185 views

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javascript - How to template If-Else structures in data-bound views?

I constantly find myself using this idiom in KO-based HTML templates:  <td><input type=" ... td>hello</td></tr></tbody> See Question&Answers more detail:os...

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

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212 views

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javascript - How to have multiple data-bind attributes on one element?

I need to have multiple data bindings on one element. For example, I want a href as well as a html data ... data-prop" attribute on one element? See Question&Answers more detail:os...

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

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214 views

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javascript - Loop through childNodes

I'm trying to loop through childNodes like this: var children = element.childNodes; children.forEach(function(item){ ... know what's going on? See Question&Answers more detail:os...

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

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763 views

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javascript - How to mock an exported const in jest

I have a file that relies on an exported const variable. This variable is set to true but if ever needed can be set ... is still true }); }); See Question&Answers more detail:os...

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

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177 views

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javascript - single page application with angularjs and facebook share button

I follow this post to deploy facebook share botton in my app http://www.hyperarts.com/blog/tutorial-how-to-add-facebook- ... /li> </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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313 views

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javascript - What is the difference and relationship between execution context and lexical environment?

In JavaScript: Understanding the Weird Parts lexical environment is explained as the scope of your code while execution ... how it does 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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154 views

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javascript - Backbone.js How to use with PHP

I have been looking into backbone.js and I can't seem to figure out how to get it communicate with php in order ... "Read", "Delete" etc. 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 - Dynamic database connection to mongodb or mongoose from nodejs

I am trying to create a multi-tenant app (saas), where each client has its own database. My situation is: I ... Or from the model? 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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171 views

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javascript - how to use q.js promises to work with multiple asynchronous operations

Note: This question is also cross-posted in Q.js mailing list over here. i had a situation with multiple asynchronous ... of Promises in Q.js? See Question&Answers more detail:os...

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

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267 views

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javascript - How does google analytics collect its data?

Yes, I know you have to embed the google analytics javascript into your page. But how is the collected ... the confusing google javascript code? See Question&Answers more detail:os...

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

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259 views

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javascript - Creating heatmaps using <canvas> element?

Are there any JavaScript libraries out there that allow you to create heatmaps using in-browser graphic rendering ... creating such a tool? See Question&Answers more detail:os...

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

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148 views

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javascript - When does parsing HTML DOM tree happen?

I always see a rendering flow for a web page like the following image shows: So the painting only begins after ... time of parsing DOM tree? See Question&Answers more detail:os...

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

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209 views

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javascript - Chain multiple "then" in jQuery.when

I have a function that does something like this: function do_something() { // some code return $.when(foo, bar, baz). ... How can I do it in JS? See Question&Answers more detail:os...

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

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210 views

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javascript - Get ID from URL with jQuery

I've got a url like this: http://www.site.com/234234234 I need to grab the Id after /, so in this case 234234234 How can i do this easily? See Question&Answers more detail:os...

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

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261 views

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javascript - Angularjs: How to display loading-icon when using 'resolve' in $routeProvider?

The following code reads via a service and shows on the web page a list of 'page' objects for a specific 'page category' ( ... }</a> </li> </ul> See Question&Answers more detail:os...

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

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135 views

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javascript - error handling in asynchronous node.js calls

I'm new to node.js although I'm pretty familiar with JavaScript in general. My question is regarding "best ... a good, rock solid 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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