问题描述
我有 document 并且我想要 中的所有内容（足以呈现页面）
包括或不包括 (<html> 或 DOCTYPE)
document.save("name.html")
或
saveDocument(document,"name.html")
或者
var iframe = document.querySelector("#idOfIframe")
var innerDocument = iframe.contentDocument || iframe.contentwindow.document
saveDocument(innerDocument,"name.html")
解决方法
downloadString(documentToString(document),document.title + '.html')
function downloadString(string,filename,type) {
var file = new Blob([string],{ type: type })
if (window.navigator.msSaveOrOpenBlob) // IE10+
window.navigator.msSaveOrOpenBlob(file,filename)
else { // Others
var a = document.createElement("a"),url = URL.createObjectURL(file)
a.href = url
a.download = filename
document.body.appendChild(a)
a.click()
setTimeout(function () {
document.body.removeChild(a)
window.URL.revokeObjectURL(url)
},0)
}
}
function documentToString(document) {
let doctype = getDoctype(document)
return (doctype !== false ? doctype + '\n' : '') + document.documentElement.outerHTML
}
function getDoctype(document) {
var node = document.doctype
if (node) {
var html = "<!DOCTYPE "
+ node.name
+ (node.publicId ? ' PUBLIC "' + node.publicId + '"' : '')
+ (!node.publicId && node.systemId ? ' SYSTEM' : '')
+ (node.systemId ? ' "' + node.systemId + '"' : '')
+ '>'
}
if (html) {
return html
} else {
return false
}
}
如果您需要在 iframe 中获取文档：
var iframe = document.querySelector("#idOfIframe")
var innerDocument = iframe.contentDocument || iframe.contentWindow.document
downloadString(documentToString(innerDocument),innerDocument.title + '.html')
如果您想使用 new XMLSerializer().serializeToString(document) 而不是 document.documentElement.outerHTML
阅读此处的评论以查看差异：How to get the entire document HTML as a string?
downloadString(new XMLSerializer().serializeToString(document),document.title + '.html')
来源：
How to get the entire document HTML as a string?
Get DocType of an HTML as string with Javascript
JavaScript: Create and save file