摘要：
Example: Using object URLs to display PDF Object URLs can be used for other things than just images! They can be used to display embedded PDF files or 阅读全文
摘要：
FileReader.readAsDataURL() The readAsDataURL method is used to read the contents of the specified Blob or File. When the read operation is finished, t 阅读全文
摘要：
Selecting files using drag and drop You can also let the user drag and drop files into your web application. The first step is to establish a drop zon 阅读全文
摘要：
Using hidden file input elements using the click() method You can hide the admittedly ugly file <input> element and present your own interface for ope 阅读全文