for...of循环(ES6引入): for...in循环(不推荐用于数组遍历): for...in循环(不推荐用于数组遍历): 应用场景 数据处理:遍历数组进行数据转换、过滤或聚合。 DOM操作:遍历元素集合进行样式修改或事件绑定。 算法实现:实现各种算法逻辑,如排序、搜索等。
比如,String的 indexOf() 方法 or Object toString() 方法. 这是一个无序遍历。 不应该去循环Array,因为Array的index顺序是必须的。但是for in不能保证这个index的顺序。最好使用forEach和for of来遍历数组 总的来说,最好不要在遍历期间,添加删除或修改属性。操作后不能确保这个属性还可以访问。 会遍历出原型...
Create iteration loop for($VARKIND$ $INDEX$ = 0; $INDEX$ < $LIMIT$; $INDEX$++) { $END$ }forin Iterate (for..in) for ($VARKIND$ $VAR$ in $ARRAY$) { $END$ }forof Iterate (for..of) for ($VARKIND$ $VAR$ of $ARRAY$) { $END$ }importdefault Import statement - impor...
If you are a professional developer, you can consider these examples as a great reference for all of the quirks and unexpected edges of our beloved JavaScript. In any case, just read this. You're probably going to find something new. ...
JavaScript Coding Tips,by Axel Rauschmayer Philip Roberts: Help, I'm stuck in an event-loop: How JavaScript actually works 3.7.2 AUDIO The Origin of Javascript with Brendan Eich 5 Minutes of JavaScript 3.9 DEVELOPERS (TWITTER, BLOGS)
9//the number of lives remaining, handles collisions between the player's character and10//other obstacles and ensures the game graphics are drawn onto the at the11//right moment. This module contains the brains behind the game play and instructs other12//code modules to do the heavy lift...
+ ActiveSheet.UsedRange.Row - 1 '使用区域的总行数+所使用区域的开始第1行用-1 For r = ...
Well, we were guilty of a binding assumption here: our method just refers toname, which JavaScript will look for in the several valid levels of variables, ending up with the properties of thewindowobject. Of course our window does have anameproperty, but it’s empty by default, so no na...
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