自动滚动屏幕

最近迷上了圣殿春秋, 恰好网上有电子版. 稍微调了下格式, 然后写了个油猴脚本, 实现自动翻半屏.

圣殿春秋在线地址: http://www.99lib.net/book/9182/

stylish

稍微改下样式:

#content>div {
    font-size:22px;
    font-family:"Microsoft YH";
    max-width:760px;
    text-align:justfied;
    margin:0 auto;
}

TamperMonkey

// ==UserScript==
// @name         AutoScroll
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  try to take over the world!
// @author       You
// @match        http://www.99lib.net/*
// @grant        none
// ==/UserScript==

(function() {
    'use strict';
    var speed=50; var inispeed=speed;
    var initialIntv=50; //50s
    var ExeTimer; var currentSpeed;
    function ScrollHalfDown(){
        var currentPos=document.documentElement.scrollTop || document.body.scrollTop;
        var halfwh=window.innerHeight/2;
        document.documentElement.scrollTop = document.body.scrollTop =currentPos+halfwh;
        //window.scrollTo(0, document.body.clientHeight +window.innerHeight/2);
    }
    function SetSpeed(e){
        var evt = e || window.event;
        var keycode=evt.keyCode;
        console.log(keycode);
        if ( evt.ctrlKey){
            if (keycode == '38'){
                speed=speed-5;
            } else if (keycode=='40'){
                speed=speed+5;
            }
            if (speed<=0){
                speed=0;
            }
            console.log(keycode,speed);
            clearInterval(ExeTimer);
            currentSpeed=initialIntv*(speed/inispeed) * 1000;
            ExeTimer=setInterval(ScrollHalfDown, currentSpeed);
            console.log(currentSpeed);
            if (evt.altKey){
                if (keycode=='80'){
                    clearInterval(ExeTimer);
                }else if(keycode=='83'){
                    ExeTimer=setInterval(ScrollHalfDown, currentSpeed);
                }
            }
        }
    }

    ExeTimer=setInterval(ScrollHalfDown, initialIntv*1000);
    document.onkeyup=SetSpeed;
})();

主要功能: ctrl+上箭头加速, ctrl+下箭头减速. 默认速度50s翻一页.

目前好像ctrl+alt+p暂停滚动不行;