Recent questions tagged Javascript

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javascript - How to upload an image to a canvas with Fabric.js?

I want that to create a process where the users can upload their images and then edit them in the browser in a Canvas ... .add(oImg); }); }); See Question&Answers more detail:os...

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

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257 views

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javascript - Bootstrap 3 Popover: display on hover AND on click, aka. Pin a Popover

Making a popover appear with the hover trigger works fine. Making a popover appear with the click trigger works ... mouseleave', exitHide) }); See Question&Answers more detail:os...

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

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333 views

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javascript - Event listeners registered for capturing phase not triggered before bubbling - why?

I'm trying to understand what determines the order in which event handlers are triggered when clicking a ... anyone explain the discrepancy? See Question&Answers more detail:os...

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

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360 views

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javascript - jQuery: Finding duplicate ID's and removing all but the first

$('[id]').each(function () { var ids = $('[id="' + this.id + '"]'); // remove duplicate ... should be kept when the append action takes place. See Question&Answers more detail:os...

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

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201 views

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javascript - How can I get the index from a JSON object with value?

This is my JSON string. [{ "name": "placeHolder", "section": "right" }, { "name": "Overview", "section": ... .log(q.indexOf( 'allInterests' ) ); 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 - Saving a model in local storage

I'm using Jerome's localStorage adapter with Backbone and it works great for collections. But, now I have a ... -a61f-ca12-2701dba9a09e" } } See Question&Answers more detail:os...

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

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385 views

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javascript - Find the Rotation and Skew of a Matrix transformation

I have the the following Transform Matrix in CSS // rotate the element 60deg element.style.transform = "matrix(0.5 ... i dont think it should. See Question&Answers more detail:os...

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

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283 views

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javascript - Electron function to read a local file - FS - Not reading

I have an electron project when I need to get electron to read a local file. Right now what I have is this ... README.md file in the console.log See Question&Answers more detail:os...

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

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151 views

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javascript - Simple function returning 'undefined' value

This is the function I am currently working on: function getSmallestDivisor(xVal) { if (xVal % 2 === 0) { ... I've created a jsfiddle demo. See Question&Answers more detail:os...

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

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155 views

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javascript - How to make SVG work with IE?

Does anybody know of a comprehensive library to make SVG work with IE (7 and 8 in particular)? I wanted ... to what excanvas does for Canvas. See Question&Answers more detail:os...

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

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724 views

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javascript - Dynamic bones animation in Three.js

Is it possible to create a dynamic animation by applying transformations to the bones of a 3D model using ... /gG_BcZcEKd/initial 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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341 views

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javascript - Improving regex for parsing YouTube / Vimeo URLs

I've made a function (in JavaScript) that takes an URL from either YouTube or Vimeo. It figures out the ... Any advice is greatly appreciated. See Question&Answers more detail:os...

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

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437 views

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javascript - Observable vs Subject and asObservable

I am learning RxJs, I am seeking confirmation or correction on my assumption. I am trying to make a public read ... object for said use 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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374 views

1 answer

javascript - How to add markers bulk in leaflet?

I have an array with ~30k elements and I need to create map with markers for each of them. I use ... optimize adding many elements to map? See Question&Answers more detail:os...

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

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282 views

1 answer

javascript - How to notify screen readers using WAI-ARIA that a div is now visible

How do you notify screen readers using WAI-ARIA that a div is now visible? If we got the html <div id="foo" ... focus on the now visible 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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337 views

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javascript - What are some real world uses for function.toString()?

I've noticed in JavaScript that if you define a function, say myfunction(), and then call myfunction.toString(), ... /real world uses of 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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165 views

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javascript - Showing many markers in Google Maps

I have this map and want to display a whole bunch of markers. But I need to find a way of showing this ... of showing a large group of markers? See Question&Answers more detail:os...

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

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476 views

1 answer

javascript - Highcharts - manually trigger hover event on a point

When you hover over a point in a Highcharts chart, you get a nice enlarged circle under you cursor (or other ... chart that I am going for. See Question&Answers more detail:os...

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

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292 views

1 answer

javascript - Fetch: post json data, application/json change to text/plain

I'm using chrome 53.0.2785.116 m (64-bit). I got the following headers on devtools. The problem is marked with ... /53.0.2785.116 Safari/537.36 See Question&Answers more detail:os...

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

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508 views

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javascript - Upload a base64 encoded image using FormData?

I have a jpeg as a base64 encoded string. var image = "/9j/4AAQSkZJRgABAQEAS..." I would like to upload this ... to append the image to 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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180 views

1 answer

javascript - HTML 5 File API

I hear that Firefox 3.6 adds support for the HTML local file API (Announcement here). Does this mean that I ... read / write simple text files. See Question&Answers more detail:os...

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

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155 views

1 answer

javascript - Path to WordPress Template Directory inside jQuery?

My header is calling a javascript file which sends out an email: <script type="text/javascript" src=" ... template directory inside 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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501 views

1 answer

javascript - Relationship between event loop,libuv and v8 engine

I am learning through the architecture of Node.js. I have following questions. Is event loop a part of libuv or ... or just Node.js does? See Question&Answers more detail:os...

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

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423 views

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javascript - How to decode the url in php where url is encoded with encodeURIComponent()

How to decode the url in php where url is encoded with encodeURIComponent()? I have tried the urldecode() but then ... have to do this in php.. See Question&Answers more detail:os...

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

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233 views

1 answer

javascript - jQuery UI sortable: determining in what order the items are

Here is an interesting use of JavaScript: reordering items with drag and drop. The implementation itself in my page ... item order in a cookie. See Question&Answers more detail:os...

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

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523 views

1 answer

javascript - Restrict to 2 decimal places in keypress of a text box?

I want to enter a decimal point in a text box. I want to restrict the user by entering more than 2 ... could be the issue? Thanks, Jollyguy See Question&Answers more detail:os...

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

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489 views

1 answer

javascript - Dynamically position Bootstrap tooltip (for dynamically generated elements)

I am using the Tooltips provided by Twitter Bootstrap (http://twitter.github.com/bootstrap/javascript.html#tooltips) ... ? Thanks in advance See Question&Answers more detail:os...

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

0 votes

165 views

1 answer

javascript - Changing body styles in vue router

I'm using Vue router with two pages: let routes = [ { path: '/', component: require('./components/HomeView.vue' ... /build.js"></script> </body> See Question&Answers more detail:os...

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

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