哪個JavaScript庫包含爲了解決「URL」不能respoved

Question

我試圖使用這個turturial https://developer.mozilla.org/en-US/docs/Web/API/HTMLCanvasElement/toBlob爲了加載blob（代表圖像）到畫布，但intellij編譯器沒有recognaize「URL」變量（未更改的變量或類型的URL）。

Answer 1

嘗試以下：

function resolve(url, base_url) { 
var doc  = document 
, old_base = doc.getElementsByTagName('base')[0] 
, old_href = old_base && old_base.href 
, doc_head = doc.head || doc.getElementsByTagName('head')[0] 
, our_base = old_base || doc_head.appendChild(doc.createElement('base')) 
, resolver = doc.createElement('a') 
, resolved_url 
; 
our_base.href = base_url || ''; 
resolver.href = url; 
resolved_url = resolver.href; // browser magic at work here 

if (old_base) old_base.href = old_href; 
else doc_head.removeChild(our_base); 
return resolved_url; 
}