Recent questions tagged Javascript

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javascript - jQuery: how to filter out non-character keys on keypress event?

I tried searching but unsure of what terms to look for. I'm using jQuery and would like to use the keypress ... to determine if it is printable? 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 - jQuery drag and drop - checking for a drop outside a droppable

My apologies if this was answered in another question, I could not find an answer specific to my problem! I'm ... 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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275 views

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javascript - HTML5 File API: How to see the result of readAsText()

When readAsText() function is completed the result is stored in .result How do I see if the content of the ... to verify the the content? 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

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javascript - jQuery - Scroll element to the middle of the screen instead of to the top with an anchor link

I'm building a one-page site with a fixed-positioned navigation bar which scrolls smoothly to the different section ... know 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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javascript - List all bindings of an element (with jQuery)

Is there a way to list all bindings on a jQuery element? jQuery's bind() does only seem to attach them ... function that does get the bindings. 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 - How can I check the marker is or isn't in the bounds using google maps v3

This is my code, I think it may has some mistakes: var bounds_array; google.maps.event.addListener(map,'bounds_changed ... bounds is in or out? 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 prevent my functional component from re-rendering with React memo or React hooks?

When hiddenLogo changes value, the component is re-rendered. I want this component to never re-render, ... propTypes; export default Splash; See Question&Answers more detail:os...

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

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422 views

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javascript - Chrome extension compiled by Webpack throws `unsafe-eval` error

I get this error when reloading my Chrome Extension after compiling using Webpack: Uncaught EvalError: Refused to ... generate source maps)? 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 - Angular CLI gives me "TypeError: callbacks[i] is not a function" when I "ng serve"

I literally just made a fresh installation of the Angular CLI in order to try it out and I don't have ... sure I fulfilled the prerequisites. See Question&Answers more detail:os...

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

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191 views

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javascript - Detect browser support for cross-domain XMLHttpRequests?

I'm working on some Javascript that makes use of Firefox 3.5's ability to perform cross-domain XMLHttpRequests ... browser's support for them? See Question&Answers more detail:os...

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

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244 views

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javascript - Google Maps SVG marker doesn't display on IE 11

My SVG map marker disappears on IE11. It's visible in Chrome, Firefox, Safari, IE9 & 10, but not 11. I've uploaded ... "></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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172 views

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javascript - How to use canvas in Angular

The common approaching to use canvas in javascript is like : var canvas = document.getElementById('tutorial'); ... with the language TypeScript? See Question&Answers more detail:os...

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

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315 views

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javascript - Can I conditionally add a where() clause to my knex query?

I want to add a where() clause in my query, but conditionally. Specifically, I want it added only if a sepecific ... .send(results); }); }); See Question&Answers more detail:os...

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

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194 views

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javascript - How do I write an arrow function in ES6 recursively?

Arrow functions in ES6 do not have an arguments property and therefore arguments.callee will not work and would anyway ... and so on of-course? See Question&Answers more detail:os...

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

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146 views

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javascript - Browser size (width and height)

I'm trying to detect the browser's current size (width and height). I know it's super easy in jQuery ... do the same thing 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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132 views

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javascript - How to display whole PDF (not only one page) with PDF.JS?

I've created this demo: http://polishwords.com.pl/dev/pdfjs/test.html It displays one page. I would like to ... Firefox. How to acomplish 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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131 views

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javascript createElement(), style problem

today i wrote this function: function zoom(obj){ var img = (!document.getElementById(obj))?false:document. ... "px"; Preview: 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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311 views

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javascript - Does adding too many event listeners affect performance?

I have a general question about javascript (jQuery) events/listeners. Is there any limit for the ... without getting performance problems? See Question&Answers more detail:os...

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

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425 views

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javascript - jQuery css Visibility with animation

I have few div's placed underneath each other and I'm using css visibility to fade them in and out. The ... act as a fadeOut. Thanks alot See Question&Answers more detail:os...

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

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139 views

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javascript - Difference between $(window).width() vs $(document).width()

What is the major difference between $(window).width() vs $(document).width() in jQuery? Whether window denotes ... html page? Am I correct ? 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 - Lodash .clone and .cloneDeep behaviors

I try to clone an array of objects with nested objects. Something like: var data = [ { id: 1, values: { a: 'a' ... , clone[1].values.d == 'd' See Question&Answers more detail:os...

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

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780 views

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javascript - "element.dispatchEvent is not a function" js error caught in firebug of FF3.0

i am getting the following error while loading my index page in FF3.0. Sorry, i am unable to paste the script ... why this error is showing up. See Question&Answers more detail:os...

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

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1.1k views

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javascript - How to catch net::ERR_CONNECTION_REFUSED

Is there a way to catch failed to load resource: net::ERR_CONNECTION_REFUSED, I've tried: try { $.post('',{}, ... how to get the kind of 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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170 views

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javascript - How to select parent element of current element in d3.js

I want to access the parent element of current element Here is the structure of HTML svg g id=invisibleG g circle g ... element(g in my case)? 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 - Trying to use React.DOM to set body styles

How can I use React.DOM to change styles on HTML body? I tried this code and it's not working: var ... route using ReactJS and React Router? See Question&Answers more detail:os...

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

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420 views

1 answer

javascript - when do you use Object.defineProperty()

I'm wondering when I should use Object.defineProperty to create new properties for an object. I'm aware that I' ... () and for what reasons. See Question&Answers more detail:os...

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

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444 views

1 answer

javascript - How to exclude one particular field from a collection in Mongoose?

I have a NodeJS application with Mongoose ODM(Mongoose 3.3.1). I want to retrieve all fields except 1 from ... from a collection in Mongoose. See Question&Answers more detail:os...

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

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157 views

1 answer

javascript - if statement in ng-click

Is there a way to put a condition inside an ng-click? Here, I want that the form is not submitted if there are ... all, so it is not triggered. See Question&Answers more detail:os...

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

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