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· One min read
He Wei

在 iOS 系统中,如果打开文件下载链接,会像下图这样,不显示文件名称,只显示一个 null。

image

解决办法就是用下面这段代码实现下载功能:

function download (url, fileName) {
const x = new XMLHttpRequest()
x.responseType = 'blob'
x.open('GET', url, true)
x.send()
x.onload = () => {
const downloadElement = document.createElement('a')
const href = window.URL.createObjectURL(x.response) // create download url
downloadElement.href = href
downloadElement.download = fileName // set filename (include suffix)
document.body.appendChild(downloadElement) // append <a>
downloadElement.click() // click download
document.body.removeChild(downloadElement) // remove <a>
window.URL.revokeObjectURL(href) // revoke blob
}
}

参考链接:微信内置浏览器下载pdf的时候标题为null?