直接上代碼箱锐，摘自https://blog.csdn.net/qq_34627459/article/details/79569313，好人一生平安
function getObjectURL(file) {
var url = null;
if (window.createObjcectURL != undefined) {
url = window.createOjcectURL(file);
} else if (window.URL != undefined) {
url = window.URL.createObjectURL(file);
} else if (window.webkitURL != undefined) {
url = window.webkitURL.createObjectURL(file);
}
return url;
}
//使用方法
$("#file").change(function(){
var file = this.files[0];
var url = getObjectURL(file);//blob:http://doamin.com/5376c16a-02f9-489f-b30c-97a1808d5724
});
