Recent questions tagged Javascript

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javascript - Get X and Y pixel coordinates when iterating over HTML5 canvas getImageData

I am iterating over some image data pulled from a canvas like so: var imageData = this.context.getImageData(0, 0 ... coordinates that I am at? 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 - Cannot reinitialise JQuery DataTable

I'm using jquery datatables to display data inside grid. On init page load script take DateTime.Today and process ... the bottom of the page. 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 - Underscore.js : findWhere with nested property value

How do I go about the filtering below: [{ "id": 100, "title": "Tlt1", "tax": [{ "name": "Tax1 ... .net/7gcCz/2/ Any suggestion much 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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javascript - Append a param onto the current URL

I'd like to have a little easter egg button in the corner of a project site. When clicked, it just drops a ... I might go about doing so though. 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 - Styling a Google Maps v3 Polyline with Dashes or Dots?

I'd like to take a Google Map v3-based map with some custom polylines, and make some of those lines dotted or ... it possible, and if so, how? 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 - Redux: Why not put actions and reducer in same file?

I'm creating an app with Redux and am scratching my head as to why it is best to place actions and ... to be exported/imported between 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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javascript - Copy current URL to clipboard

Not sure why this has been so difficult for me today, but for some reason I cannot seem to get it to ... using some sort of hidden textfield. 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 - Adding members to an existing object

Suppose we have the following object: var obj = { fn1: function() { } } how can I dynamically add another member to it, say fn2: function() {} 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 detect IE and Edge browser?

Can't get Parallax working properly in IE or Microsoft Edge. I've looked in forums and haven't ... http://peaceandplentyinn.mybnbwebsite.com 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 js - Show message if ng-repeat is empty

The following AngularJS application is working with ng-repeat and an applied filter. A certain applied filter leaves no ... $apply(); } }); See Question&Answers more detail:os...

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

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339 views

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javascript - How to recursively search all parentNodes

I want to know, how to find out recursively all parent nodes of an element. Suppose i have following snippet <a ... the top most parent 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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javascript - D3.js binding an object to data and appending for each key

I'm a D3.js newbie and I'm learning how to play around with data. Let's say I have an object with names as keys, ... [i]; }); So am I close?? See Question&Answers more detail:os...

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

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268 views

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javascript - `pointermove` event not working with touch. Why not?

I have this pen: https://codepen.io/anon/pen/eyKeqK If you try it on a touch-screen device (f.e. visit the ... el ) ) return 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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375 views

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javascript - env-cmd error failed to locate ./.env file in gatsby?

I have a file name .env.development in the root folder. I had install env-cmd as dev dependencies when I start ... with a non-zero exit 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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javascript - jQuery UI Alert Dialog as a replacement for alert()

I'm using alert() to output my validation errors back to the user as my design does not make provision for ... or something similiar. 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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541 views

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javascript - Import from subfolder of npm package

I've been working on creating a small library of React components for use in several other projects. I am ... to material-ui handle 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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229 views

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javascript - Content Security Policy: cannot load Google API in Chrome extension

This is relative an Chrome extension. I am trying a simple one which uses the Google Chart API I have this code in ... src 'self'", } Any idea? 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 - How does react-router pass params to other components via props?

Thus far, the extent of my knowledge about how properties are passed from one component to another via parameters ... did not resonate with me. 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

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javascript - Clearing URL hash

Visit stackoverflow.com/#_=_ and window.location.hash evaluates to #_=_. Fine. Now execute window.location.hash = ' ... case of an empty hash.) See Question&Answers more detail:os...

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

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235 views

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javascript - ng-model no longer updates after typing into text input

I am new to AngularJS and I am having a problem that I am having trouble solving, there was a similar question on ... $scope.showedit = 1; }) } 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 - Puppeteer: Get innerHTML

Does anybody know how to get the innerHTML or text of an element? Or even better; how to click an element ... Thanks 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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331 views

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javascript - Is it possible to emulate non-enumerable properties?

ES5 has a enumerable flag. Example Example var getOwnPropertyDescriptor = Object.getOwnPropertyDescriptor , pd = ... Maybe with VBScript? See Question&Answers more detail:os...

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

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351 views

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javascript - Window.Open with PDF stream instead of PDF location

Based on the question Open PDF in new browser full window, it looks like I can use JavaScript to open a new window ... ), "pdf", script, 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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240 views

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javascript - angular.js ng-repeat li items with html content

I have a model that comes back from the server which contains html instead of text (for instance a b tag or an ... http://jsfiddle.net/gFFBa/1/ See Question&Answers more detail:os...

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

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580 views

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javascript - Is NaN falsy? Why NaN === false returns false

Why NaN === false => false, isn't NaN falsy? Why NaN === NaN => false, but !!NaN === !!NaN ... been racking my brain trying to figure this 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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1.3k views

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javascript - underscore/lodash unique by multiple properties

I have an array of objects with duplicates and I'm trying to get a unique listing, where uniqueness is ... I'm comparing multiple properties? 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 - Get checkbox list values with jQuery

In a div, I have some checkbox. I'd like when I push a button get all the name of all check box checked. Could you ... ></td> ... </div> 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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240 views

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javascript - Export more than one variable in ES6?

I'm trying to export more than one variable in ES6: exports.js var TestObject = Parse.Object.extend('TestObject') ... m doing it the wrong way? See Question&Answers more detail:os...

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

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