Calling a function every 60 seconds
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: UsingsetTimeout()itispossibletolaunchafunctionataspecifiedtime: setTimeout(function,60000); ButwhatifIwouldliketolaunc......
How to update nested state properties in React
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: I\'mtryingtoorganizemystatebyusingnestedpropertylikethis: this.state={ someProperty:{ flag:true } } Butupdating......
How do I add a simple onClick event handler to a c
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: I\'manexperiencedJavaprogrammerbutamlookingatsomeJavaScript/HTML5stuffforthefirsttimeinaboutadecade.I\'mcompletelystum......
How to get progress from XMLHttpRequest
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: IsitpossibletogettheprogressofanXMLHttpRequest(bytesuploaded,bytesdownloaded)? Thiswouldbeusefultoshowaprogressbarwhe......
How to get a pixel's x,y coordinate color from
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: Isthereanywaytocheckifaselected(x,y)pointofaPNGimageistransparent? 回答1: BuildingonJeff\'sanswer,yourfirststepwoul......
Passing an array as a function parameter in JavaSc
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: I\'dliketocallafunctionusinganarrayasparameters: constx=[\'p0\',\'p1\',\'p2\']; call_me(x[0],x[1],x[2]);//Idon\'tlikei......
Is there a way to get element by XPath using JavaS
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: Iamlookingforsomethinglike: getElementByXpath(//html[1]/body[1]/div[1]).innerHTML IneedtogettheinnerHTMLofelementsusingJS(t......
node.js global variables?
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: Iaskedhere: node.jsrequireinheritance? andwastoldthatIcansetvariablestotheglobalscopebyleavingoutthevar. Thisdoesnot......
How to get a subset of a javascript object's p
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: SayIhaveanobject: elmo={ color:\'red\', annoying:true, height:\'unknown\', meta:{one:\'1\',two:\'2\'} }; Iwantto......
What's the difference between [removed] and [r
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: Shouldbothofthemreferencethesameobject? 回答1: AccordingtotheW3C,theyarethesame.Inreality,forcrossbrowsersafety,you......
How to prevent ENTER keypress to submit a web form
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: HowdoyoupreventanENTERkeypressfromsubmittingaforminaweb-basedapplication? 回答1: [revision2012,noinlinehandler,preser......
Accessing private member variables from prototype-
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: Isthereanywaytomakeprivatevariables(thosedefinedintheconstructor),availabletoprototype-definedmethods? TestClass=funct......
onKeyPress Vs. onKeyUp and onKeyDown
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: Whatisthedifferencebetweenthesethreeevents?UpongooglingIfoundthat TheKeyDowneventistriggeredwhen theuserpressesaKe......
JavaScript, Node.js: is Array.forEach asynchronous
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: IhaveaquestionregardingthenativeArray.forEachimplementationofJavaScript:Doesitbehaveasynchronously? Forexample,ifIcall: [m......
Constructor function vs Factory functions
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: CansomeoneclarifythedifferencebetweenaconstructorfunctionandafactoryfunctioninJavascript. Whentouseoneinsteadoftheother......
$on and $broadcast in angular
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: IhaveafooterControllerandcodeScannerControllerwithdifferentviews. angular.module(\'myApp\').controller(\'footerController\',[\"$sco......
Generate pdf from HTML in div using Javascript
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: Ihavethefollowinghtmlcode: <!DOCTYPEhtml> <html> <body> <p>don\'tprintthistopdf</p> <divid=\"pdf\">...
Pass props to parent component in React.js
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: Istherenotasimplewaytopassachild\'spropstoitsparentusingevents,inReact.js? varChild=React.createClass({ render:functi......
How do I use namespaces with TypeScript external m
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: Ihavesomecode: baseTypes.ts exportmoduleLiving.Things{ exportclassAnimal{ move(){/*...*/} } exportclassPlant{ ......
setImmediate vs. nextTick
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: Node.jsversion0.10wasreleasedtodayandintroducedsetImmediate.TheAPIchangesdocumentationsuggestsusingitwhendoingrecursivene......