[Javascript] Closure Cove, Common mistake

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[Javascript] Closure Cove, Common mistake

They’ve got a problem with their existing code, which tries to use a closure. Check it out: function assignLaser( shark, sharkList ){ var stationAssignment; for(var i = 0; i<sharkList.length; i++){ if(shark == sharkList[i]){ stationAssignment = funct…

[Javascript] Closure Cove, 1

Returning a function from a function, complete with variables from an external scope, is called a closure. The entire contents of one of these inner functions will still be available outside the outermost function. Example: function buildTicket(allRi…

common mistake of closure in loops

[common mistake of closure in loops] 下例中item引用的始终是最后一个值. function showHelp(help) { document.getElementById('help').innerHTML = help; } function setupHelp() { var helpText = [ {'id': 'email', 'help': 'Your e-mail address'}, {'id': 'name', 'help': 'You…

如何理解javascript closure ?

接触过javascript的人应该听过闭包(closure),有一种观点认为是闭包赋予了javascript的强大能力,也赋予了它具备OOP的特征.既然javascript closure如此重要,那么问题来了,什么是closure呢?closure有什么作用?本文将结合我自己对closure的理解,用尽量通俗易懂的方式来进行阐述. 先看看老外对closure怎么定义的?A closure is an inner function that has access to the outer (en…

[Javascript]Clouse Cove, 2 ,Modifying Bound Values After Closure

function buildCoveTicketMarker(transport){ var passengerNumber = 0; return function(name){ passengerNumber++; alert("Ticket via the " +transport+ "Welcome, "+ name+ "#"+passengerNumber+"."); } } var getSubmarineTick…

javascript closure 闭包事件绑定

先来一个基本的例子  <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <body> <a href='#'> 第一个链接 </a> </br> <a href='#'> 第二个链接 </a> </br>…

About javascript closure

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Closures?redirectlocale=en-US&redirectslug=JavaScript%2FGuide%2FClosures http://www.jibbering.com/faq/notes/closures/ http://howtonode.org/why-use-closure http://lostechies.com/derekgreer/…