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46. HTML 类数组属性及其操作 #46

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ly525 opened this issue Oct 21, 2017 · 0 comments

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ly525 commented Oct 21, 2017

array like �attributes and it's operation

element.attributes
docuement.getElementsByClassName || getElementsByTagName || getElementsByName || querySelectorAll

let el = document.getElementById('app')
let attrs = el.attributes
Array.isArray(attrs)  // => false
// iterate
[...attrs].map(attrs, attr => {
     return {
           name: attr.name,
           value: attr.value
     }
})

// 参见vuejs源码
[].forEach.map(attrs, attr => {
     return {
           name: attr.name,
           value: attr.value
     }
})

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