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Dom操作真麻烦

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托米2580242647

#1 Created at ... [Delete] [Delete and Lock User] 
// 选择<p>JavaScript</p>:
var js = document.getElementById('test-p');

// 选择<p>Python</p>,<p>Ruby</p>,<p>Swift</p>:
var arr = document.getElementsByClassName('c-red c-green')[0].getElementsByTagName('p');

// 选择<p>Haskell</p>:
var haskell = document.getElementsByClassName('c-green')[1]. lastElementChild;

头一次知道js也有selector 只会用jquery的

原来是因为浏览器兼容问题 js的selector很少用啊

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