dollar dayz

dollar dayz

The "dollar" function has become famous in recent years due to its inception in many popular JavaScript frameworks. MooTools, for example, uses the dollar function to select a single element from the DOM. This functionality is extremely helpful as it allows you to keep your code extremely short and readable, not to mention document.getElementById(''); can get annoying quickly.

由于在许多流行JavaScript框架中都诞生了“美元”功能，因此近年来变得闻名。 例如，MooTools使用美元功能从DOM中选择单个元素。 此功能非常有帮助，因为它使您可以使代码极短且易于阅读，更不用说document.getElementById('');了。 会很快变得烦人。

代码 (The Code)

function $(id) { return document.getElementById(id); }

You don't need to use a JavaScript framework to compact your code. If you frequently select unique DOM elements, you should create a dollar function for the sake of yourself and your users.

您不需要使用JavaScript框架来压缩代码。 如果您经常选择唯一的DOM元素，则应该为自己和用户创建一个Dollar函数。

翻译自: https://davidwalsh.name/javascript-dollar-function

dollar dayz