Recent questions tagged JavaScript

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javascript - Why do we pass null to XMLHttpRequest.send?

Why is send so often called as xhr.send(null) instead of xhr.send() ? W3, MDN, and MSDN all state that it's ... } } } }; sa.send(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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javascript - Is there any way to call function 'before document ready' in Jquery?

I want to call function before document get ready, so is there any method in Jquery 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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208 views

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javascript - Can one set multiple properties inside an object literal to the same value?

For example, can I do this?: { a: b: c: d: 1, e: 2, geh: function() { alert("Hi!") } } EDIT: Is there ... 2, geh: function() { alert("Hi!") } } See Question&Answers more detail:os...

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

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303 views

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javascript - Back-tick vs single quote in js

Working on node.js (server side), I wonder if I should use all back-ticks (`) instead of the regular ... quotes are converted to back-ticks? See Question&Answers more detail:os...

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

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165 views

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javascript - Backbone.js - Given an element, how do I get the view?

I've created a bunch of Backbone.js views. Each view has an associated element (view.el). Given an element on ... Backbone with jQuery 1.5.) 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 move an element after another element using JS or jquery?

I would like to move one DIV element beside another, it is normally like this: <div class="box-content-top"> <div ... </div> </div> </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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javascript - Setting an ES6 class getter to enumerable

I have an ES6 class (transcompiled with babeljs) with a getter property. I understand that these properties are ... ['name'] Plunker Example 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 'private' functions in an angular service with Karma and Jasmine

I have a service in my angular app that looks something like this: angular.module('BracketService', []). ... the return statement? 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 - How can I make a really long string using IndexedDB without crashing the browser?

I'm writing a web app that generates a potentially large text file that the user will download, and all the ... from one the user provides. 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 doesn't .includes() work with .classList?

element.classList returns an array of classes, its my understanding .includes() is used with arrays, so I don't ... ]; ary.includes('a'); See Question&Answers more detail:os...

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

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348 views

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javascript - Provider 'xx' must return a value from $get factory method in AngularJs

I have written an angularjs factory as below module.factory('LogService', function () { function log(msg) { console. ... or at the next line? 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 - DeprecationWarning: Calling an asynchronous function without callback is deprecated. - how to find where the "function:" is?

I recently updated my node to 7.2.1 and noticed that there is a warning coming: (node:4346) DeprecationWarning: ... Where can I find the 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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272 views

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javascript - Mongoose: validation error path is required

I'm trying to save a new document in mongodb with mongoose, but I am getting ValidationError: Path 'email' is ... use null as temporary value? See Question&Answers more detail:os...

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

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353 views

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javascript - how to create line breaks in console.log() in node

Is there a way to get new lines in console.log when printing multiple objects? Suppose we have console.log(a,b, ... that does not work in node See Question&Answers more detail:os...

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

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232 views

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javascript - reactjs Cannot read property 'keys' of undefined

I am learning reactjs through a tutorial and ran into this error. That says "Cannot read property 'keys' of undefined ... > </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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4.3k views

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javascript - Print a website without printing the link locations?

I'm invoking the navigator print function using a simple window.print(); call. It prints perfect (I want to ... on Ubuntu an Windows XP/Vista. See Question&Answers more detail:os...

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

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2.2k views

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javascript - Is there a callback for window.scrollTo?

I want to call focus() on an input after the widow scrolled. I'm using the smooth behavior for the scrollTo() ... then el.focus() Any ideas? See Question&Answers more detail:os...

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

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430 views

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javascript - Get browser window width including scrollbar

I tried to get browser window width with $(window).width();. On IE 10, it does return the full browser width ... be exactly same as CSS. 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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209 views

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javascript - Detecting autocomplete on form input with jQuery

I have a form that detects if all the text-fields are valid on each keyup() and focus(); if they're all ... it's been changed, using jQuery? See Question&Answers more detail:os...

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

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198 views

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javascript - jQuery attr('onclick')

I'am trying to change "onclick" attribute in jQuery but it doesn't change, here is my code: $('#stop'). ... where is the solution please 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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264 views

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javascript - jQuery - Append an event handler to preexisting click event

I have a click event that is defined already. I was wondering what the best way would be to append another event ... true); return 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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516 views

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javascript - ES6 Proxy Polyfill for IE11

IE11 does not and will not implement ES2015 Proxy objects. Yet IE11's end of extended support is October 14, 2025. ... only has to work in IE11. See Question&Answers more detail:os...

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

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178 views

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javascript - Disable Angular 5 Input fields correct way

I have a FormGroup that was created like that: form: FormGroup; constructor(private _formBuilder: FormBuilder) { } ... not a good practice. 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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236 views

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javascript - Image scaling in IE 11, 10, and 9 is terrible

Before you say this is an existing question, or that all I need to use is ms-interpolation-mode, or that I just need ... for IE 9, 10, and 11. 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

1 answer

javascript - How to let react router respond with 404 status code?

I'm using react router as root and all requests under "/" are directed to react router. And when react router found ... 'some title' }); }); See Question&Answers more detail:os...

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

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304 views

1 answer

javascript - The Google Maps API server rejected your request

I m working on an application which renders google maps on an image as below <img alt="Google Maps ( ... the settings in google API console See Question&Answers more detail:os...

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

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349 views

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javascript - for-in vs Object.keys forEach without inherited properties

I was looking at a perf benchmark of Object.keys + forEach vs for-in with normal objects. This benchmark shows ... .keys + forEach in Chrome? See Question&Answers more detail:os...

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

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251 views

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javascript - How to call outer function's return from inner function?

I have such code: function allValid() { $('input').each(function(index) { if(something) { return false; } }); ... is "not possible" it is 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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