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解决实际问题的 24 个 ES6 代码段

 4 years ago
source link: https://www.infoq.cn/article/6Llkjz50xDIEfZvtjR7R
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这篇文章基于实际使用场景总结了 24 个 ES6 代码段，可用来解决项目中可能遇到的一系列问题。

1. 如何隐藏所有指定元素？

复制代码

const hide = (...el) => [...el].forEach(e => (e.style.display = 'none'));

// Example

hide(document.querySelectorAll('img')); // 隐藏页面上的所有 <img> 元素

2. 如何确认元素是否具有指定的类？

复制代码

const hasClass = (el, className) => el.classList.contains(className);

// Example

hasClass(document.querySelector('p.special'), 'special'); // true

3. 如何切换元素的类？

复制代码

const toggleClass = (el, className) => el.classList.toggle(className);

// Example

toggleClass(document.querySelector('p.special'), 'special');

// 该段不再有 'special' 类


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