Recent questions tagged Javascript

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javascript - Regular expression for number with length of 4, 5 or 6

I need a regular expression that validate for a number with length 4, 5, 6 I used ^[0-9]{4} to validate ... to include validation for 5 and 6. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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116 views

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javascript - default array values

Is there a way to assign a default values to arrays in javascript? ex: an array with 24 slots that defaults to 0 See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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222 views

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javascript - Programmatically pass arguments to grunt task?

I have a grunt task that calls other grunt tasks. I want to call a subtask with programmatically determined arguments. ... 1.6 grunt v0.4.0rc6 See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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226 views

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javascript - Is there a better jQuery solution to this.form.submit();?

I want to trigger the submit event of the form the current element is in. A method I know works sometimes ... the input/select/textarea is in? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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451 views

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javascript - Fire oninput event with jQuery

I have an oninput event on a textarea to check the height and resize it. Now I need to edit the ... oninput event programatically with jQuery? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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505 views

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javascript - Remove Event Listener On Unmount React

I had higher order component in react like this: export default function (InnerComponent) { class InfiniteScrolling ... as mentioned before! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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316 views

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javascript - jquery.mobile 1.4.5 Uncaught TypeError: Cannot read property 'concat' of undefined

I have created a sample index.html file and included the latest jquery (3.1.0) and jquery mobile (1.4.5). On ... issue. Can any one tell me why? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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440 views

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javascript - How to convert a string to ObjectId in nodejs mongodb native driver?

I'm using mongodb native driver in a nodejs environment and I need to convert an id string to ObjectId to use it ... query, how can I do this? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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179 views

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javascript - Why isn't setTimeout cancelling my loop?

I wondered how many times can a JavaScript while statement (in Chrome's console) can increment a variable in a ... how can I solve it? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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287 views

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javascript - Can I see if a timer is still running?

Simple question here that I can't seem to find an answer for: Once a setTimeout is set, is there any way to ... , just if it's still running. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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139 views

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javascript - Changing the page title with Jquery

How to make dynamic changing <title> tag with jquery? example: adding 3 > symbols one by one > title >> title >>> title See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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364 views

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javascript - JQuery Datatables : Cannot read property 'aDataSort' of undefined

I created this fiddle to and it works well as per my requirements: Fiddle However, when I use the same in my application I ... name" }] }); } }) See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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227 views

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javascript - flot graph, use legend to turn on/off series

I want to be able to use the legend of a flot graph to turn on/off the series of my graph. I found the ... ; } plotAccordingToChoices(); }) }); See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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169 views

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javascript - canvas- Cropping images in different shapes

I'm working on a website that I need to crop images on different shapes . I found lots of libraries and ... manage this problem ? King Regards See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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288 views

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javascript - How to add a new hidden input fields to the form on submit

I want to pass certain hidden parameters in a request when some conditions are met. For example I want to pass ... input> </fieldset> </form> See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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331 views

1 answer

javascript - jQuery selector to target any class name (of multiple present) starting with a prefix?

I'm considering one selection statement that would target one of many css class names in a single class attribute ... class name of the bunch. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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445 views

1 answer

javascript - use text-align smartly (if english dir=ltr if arabic dir=rtl)

I have a community web site and I want that users write English posts with direction LTR / text-align: left) and Arabic ... i don't know how ?! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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248 views

1 answer

javascript - Differentiating Between an AJAX Call / Browser Request

Is there anything in the header of an HTTP request that would allow me to differentiate between an AJAX call ... usually the same regardless? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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321 views

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javascript - ASP.NET MVC Partial view ajax post?

Index.html (View) <div class="categories_content_container"> @Html.Action("_AddCategory", "Categories") </div> ... with using AJAX post? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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406 views

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javascript - Affix is not working in Bootstrap 4 (alpha)

According to Bootstrap 3 docs I have added following attributes to a navbar: <nav class="navbar no-margin-bottom" ... and jQuery.js are working. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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454 views

1 answer

javascript - YouTube Player API: How to get duration of a loaded/cued video without playing it?

I'm not able to get the correct video duration/length (in seconds) of a loaded/cued video via the getDuration() method ... /div> </body> </html> See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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187 views

1 answer

javascript - Include SVG files with HTML, and still be able to apply styles to them?

You can include SVG files into your HTML file via embed object and svg tags. Using an embed or object tag ... just get undefined. Thank you! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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275 views

1 answer

javascript - ZLIB Decompression - Client Side

I am receiving data as an "ZLIB" compressed inputstream. Using Javascript/Ajax/JQuery, I need to uncompress it on the client ... .. ...... so on See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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346 views

1 answer

javascript - Periodically autosave form

How to implement a periodical save of a form in the background? Same kinda thing that gmail does. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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200 views

1 answer

javascript - JQuery: Toggle Element that is clicked and hide all other

I want to hide any visible span elements if any is visible, and toggle it again if a element is clicked <div ... and I want to toggle this See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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231 views

1 answer

javascript - Freeze Header until Irrelevant (HTML, CSS and JS)

I have a few different tables that I want to display vertically down a page. The trouble is, the different ... just line up properly though. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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150 views

1 answer

javascript - Setting a timeout handler on a promise in angularjs

I'm trying to set a timeout in my controller so that if a response isn't received in 250ms it should ... toHaveBeenCalledWith("Timed out"); }) See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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292 views

1 answer

javascript - Youtube video autoplay on iPhone's Safari or UIWebView

Is it possible to get a youtube video to autoplay on Safari and/or UIWebView? I've seen this done in an ... ? Would getElementById().click work? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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