// ==UserScript==
// @name         bilibili 倍速播放
// @namespace    https://bbs.tampermonkey.net.cn/
// @version      1.0.0
// @description  简易小 demo，看道总、之一gg的教程写的~
// @author       Xbai-hang
// @match        https://www.bilibili.com/video/*
// ==/UserScript==

(function() {
    var input = document.createElement('input');
    input.id = 'self-rate';
    input.placeholder = '输入倍速(0, 16]';
    input.type = 'text';

    var dom = document.querySelector('.video-desc-v1');
    dom.insertBefore(input, dom.firstChild);
    var rateDom = document.querySelector('#self-rate');
    rateDom.onblur = function() {
        var rate = rateDom.value;
        while(Object.is(parseInt(rate), NaN) || rate <= 0 || rate > 16) {
            rate = parseInt(prompt("倍速播放应该在 (0, 16] 之间, 输入数据不合法, 请更改数据"));
            rateDom.value = rate;
        }
        document.querySelector('video').playbackRate = rate;
    }
    rateDom.onkeydown = function(e){
        if(e.keyCode == 13){
            rateDom.onblur()
        }
    }
})();