How to perform sql “LIKE” operation on firebase?
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: Iamusingfirebasefordatastorage.Thedatastructureislikethis: products:{ product1:{ name:\"chocolate\", } product2:{......
Preserving a reference to “this” in JavaScript pro
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: Thisquestionalreadyhasananswerhere: Howtoaccessthecorrect`this`insideacallback? ......
javascript document.getElementsByClassName compati
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: Whatisthebestmethodtoretrieveanarrayofelementsthathaveacertainclass? Iwouldusedocument.getElementsByClassNamebutIEdoes......
Maximum size of a
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\'mworkingwithacanvaselementwithaheightof600to1000pixelsandawidthofseveraltensorhundredsofthousandsofpixels.Howeve......
How to create an accurate timer in 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: Ineedtocreateasimplebutaccuratetimer. Thisismycode: varseconds=0; setInterval(function(){ timer.innerHTML=seconds++; },10......
Are “(function ( ) { } ) ( )” and “(function ( ) {
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: Thisquestionalreadyhasananswerhere: Locationofparenthesisforauto-executinganonymousJavaScriptfunc......
Check whether user has a Chrome extension installe
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: IamintheprocessofbuildingaChromeextension,andforthewholethingtoworkthewayIwouldlikeitto,IneedanexternalJavaScript......
How to get the previous URL in 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: IsthereanywaytogetthepreviousURLinJavaScript?Somethinglikethis: alert(\"previousurlis:\"+window.history.previous.href); ......
Why can I add named properties to an array as if i
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: Thefollowingtwodifferentcodesnippetsseemequivalenttome: varmyArray=Array(); myArray[\'A\']=\"Athens\"; myArray[\'B\']=\"Berl......
Asynchronous for cycle in 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: Ineedaloopthatwaitsforanasynccallbeforecontinuing.Somethinglike: for(/*...*/){ someFunction(param1,praram2,function(......