如下:
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"http://top.zhan.com/mob/ielts/read/review-202-1-1.html",
"http://top.zhan.com/mob/ielts/read/review-204-1-1.html",
"http://top.zhan.com/mob/ielts/read/review-206-1-1.html",
"http://top.zhan.com/mob/ielts/read/review-208-1-1.html",
"http://top.zhan.com/mob/ielts/read/review-210-1-1.html",
"http://top.zhan.com/mob/ielts/read/review-212-1-1.html",
"http://top.zhan.com/mob/ielts/read/review-201-1-1.html",
"http://top.zhan.com/mob/ielts/read/review-203-1-1.html",
"http://top.zhan.com/mob/ielts/read/review-205-1-1.html",
"http://top.zhan.com/mob/ielts/read/review-207-1-1.html",
"http://top.zhan.com/mob/ielts/read/review-209-1-1.html",
"http://top.zhan.com/mob/ielts/read/review-211-1-1.html",
]
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xhr.open('GET', url, true)
xhr.setRequestHeader('Accept-Timezone', 'UTC+8')
xhr.onreadystatechange = () => {
if (xhr.readyState !== 4) return ''
window.setTimeout(run, 30)
}
xhr.send()
}
function run () {
var url = list.pop()
if (url) createXHR(url)
}