在Mozilla的sample code for Downloads.jsm有幾行使用=>
我不知道的含義:Mozilla的JavaScript中`=>`是做什麼的?
let view = {
onDownloadAdded: download => console.log("Added", download),
onDownloadChanged: download => console.log("Changed", download),
onDownloadRemoved: download => console.log("Removed", download),
};
是什麼=>
在這裏做?
[JavaScript中「=>」的含義是什麼意思?](http://stackoverflow.com/q/24900875/1048572) – Bergi