ã“ã“ã‹ã‚‰ã‚¹ã‚¿ãƒ¼ãƒˆ :: Add-ons for Firefox :: 開発者センターAdd-ons allow developers to extend and modify the functionality of Firefox. They are written using standard Web technologies - JavaScript, HTML, and CSS - plus some dedicated JavaScript APIs. Among other things, an add-on could: Change the appearance or content of particular websites Modify the Firefox user interface Add new features to Firefox There are several types of add-ons, but the most comm
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