Recent questions tagged Javascript

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javascript - Detecting collision of rectangle with circle

Actually I am trying to detect thee collision of the Rectangle with the circle in the following piece of code:- ... figure out what is wrong? See Question&Answers more detail:os...

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

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337 views

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javascript - Can't make paths draw growing slowly with D3

Using the d3 graphics library, I can't seem to make paths draw slowly so they can be seen growing. This site has ... , 'blue') .duration (1000); See Question&Answers more detail:os...

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

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225 views

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javascript - Highlight polygon and tint rest of map using Google Maps

I'd like to display a highlighted polygon using Google Maps. The idea is that the polygon in question would be ... be quite complicated to me. See Question&Answers more detail:os...

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

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javascript - jQuery $.ajax(), pass success data into separate function

I am using the jQuery $.ajax() function. I have put this into a parent function, which passes some values into the ... alert(data); } }); } See Question&Answers more detail:os...

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

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javascript - How to call a function after a div is ready?

I have the following in my javascript file: var divId = "divIDer"; jQuery(divId).ready(function() { createGrid(); // ... >'); tpl.apply({ }); See Question&Answers more detail:os...

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

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javascript - Writing binary data using node.js fs.writeFile to create an image file

I'm trying to write a canvas data with node.js fs.writeFile as a binary. JPEG file, but after the file is ... . What am I doing wrong here? See Question&Answers more detail:os...

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

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javascript - Don't load hidden images

I have a bunch of hidden images on my website. Their container DIVs have style="display: none". Depending on the ... ); } revealImage('flower'); See Question&Answers more detail:os...

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

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238 views

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javascript - Detect mouseover of certain points within an HTML canvas?

I've built an analytical data visualization engine for Canvas and have been requested to add tooltip-like hover over ... the mix. Any ideas? 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

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javascript - simplest cross-browser check if protocol handler is registered

When user clicks link with custom protocol (like myapp://superlink) I need either launch an app or allow user ... (latest), Firefox(latest) See Question&Answers more detail:os...

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

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172 views

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javascript - Initialize Firebase references in two separate files in the new API

I have upgraded to the new API and don't know how to initialize Firebase references in two separate files: /* ... file, and it worked okay. See Question&Answers more detail:os...

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

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191 views

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javascript - How do you completely remove Ionic and Cordova installation from mac?

How can I remove Cordova and ionic installation from my Mac completely? I am running mac os Yosemite 10.10.2 See Question&Answers more detail:os...

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

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470 views

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javascript - Why cookies and set-cookie headers can't be set while making xmlhttprequest using setRequestHeader?

I was wondering why one cannot set cookie headers using setRequestHeader. Is there any specific reason or just that they ... I go with my patch. See Question&Answers more detail:os...

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

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133 views

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javascript - jQuery asynchronous function call, no AJAX request

This seems silly, but I can't find how to do an asynchronous function call with jQuery that doesn't involve some ... is what I was going for. See Question&Answers more detail:os...

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

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152 views

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javascript - Switch case with conditions

Am I writing the correct switch case with conditions? var cnt = $("#div1 p").length; alert(cnt); ... occur when the conditions are matched! See Question&Answers more detail:os...

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

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205 views

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javascript - Replace url from youtube to embed code - Error: Permission denied to access property 'toString'

I have this code and this error in FireBug: Error: Permission denied to access property 'toString' How can i fix ... http://jsfiddle.net/9e48p/ See Question&Answers more detail:os...

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

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282 views

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javascript - Get image preview before uploading in React

Many examples of this on here but can't seem to find any for react. I have managed to convert the vanilla ... in React app? Regarding answer: See Question&Answers more detail:os...

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

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647 views

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javascript - reactjs event listener beforeunload added but not removed

I have a react component like : import React, { PropTypes, Component } from 'react' class MyComponent extends ... event on other pages? 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 - Getting the document object of an iframe

I'm trying to get the document object of an iframe, but none of the examples I've googled seem to help. My ... Firefox and Chrome to no avail. See Question&Answers more detail:os...

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

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211 views

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javascript - jquery use of bind vs on click

I have come across several methods for handling click events in jquery: bind: $('#mydiv').bind('click', function ... (see Simons answer below). See Question&Answers more detail:os...

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

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283 views

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javascript - Hide div element when screen size is smaller than a specific size

I have a div element that I want to hide when the width of the browser is less than or equal to 1026px. ... when it is less than 1026px width: See Question&Answers more detail:os...

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

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167 views

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javascript - google analytics - multiple trackers on one page (cookie conflict)

I'm writing a web application that's supposed to be embedded in other people's websites (kind of a widget). ... event and campaign tracking...) See Question&Answers more detail:os...

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

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225 views

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javascript - Setting attributes on a collection - backbone js

Collections in backbone js don't allow you to set attributes, but I often find that there is need to store ... place to set that information? See Question&Answers more detail:os...

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

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243 views

1 answer

javascript - Using setInterval() to do simplistic continuous polling

For a simple webapp that needs to refresh parts of data presented to the user in set intervals, are there ... processing job every 5 seconds. See Question&Answers more detail:os...

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

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471 views

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javascript - fadeOut() and slideUp() at the same time?

I have found jQuery: FadeOut then SlideUp and it's good, but it's not the one. How can I fadeOut() and ... page loaded. Has anyone done 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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1.2k views

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javascript - Resizing a leaflet map on container resize

I have a <div> containing a leaflet map. Upon certain events the height of the <div> will be altered. I'd ... the map remains at its old size. See Question&Answers more detail:os...

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

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297 views

1 answer

javascript - iphone/ipad triggering unexpected resize events

I'm working on a mobile version of my site. I'm using media queries and CSS as much as possible, but I'm ... get the alert. What's the deal? See Question&Answers more detail:os...

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

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436 views

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javascript - Reload an IFRAME without adding to the history

I'm changing an IFRAME's src in order to reload it, its working fine and firing the onload event when its ... and yet not affect the history? See Question&Answers more detail:os...

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

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234 views

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javascript - How to update the Context value in a Provider from the Consumer?

MyContext.js import React from "react"; const MyContext = React.createContext('test'); export default ... manipulate state of provider? See Question&Answers more detail:os...

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

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