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顺滑的滚动；使用j/k上下滚动，gg到顶部，G到底部
// ==UserScript==
// @name Vim Style Navigation
// @name:zh-CN Vim风格导航
// @namespace http://www.vatery.com/
// @version 1.1.2
// @description Scroll smoothly. Use (h,j,k,l) to scroll around. gg to go to top G to to bottom. d to PageDown u to PageUp.
// @description:zh-CN 顺滑的滚动；使用j/k上下滚动，gg到顶部，G到底部
// @author y-not-u
// @license MIT
// @match http*://*
// @match *://*/*
// @match *
// @grant none
// ==/UserScript==
(function() {
'use strict';
var keyLog = []
document.onkeypress = function (e) {
// if user is typing inside of a text box return
var nodeName = e.target.nodeName;
if (nodeName == 'INPUT' || nodeName == 'TEXTAREA' ) return;
// event
e = e || window.event;
// horizontal and vertical
var h = 0;
var v = 0;
// scroll amount
keyLog.push(e.keyCode)
// console.log(keyLog)
var sa = 100;
switch (e.keyCode){
case 104: // h
h -= sa;
keyLog = [];
break;
case 106: // j
v += sa;
keyLog = [];
break;
case 107: // k
v -= sa;
keyLog = [];
break;
case 108: // l
h += sa;
keyLog = [];
break;
case 100: // d
v = v + sa + 300;
keyLog = [];
break;
case 117: // u
v = v - sa - 300;
keyLog = [];
break;
case 120: // x
closeTab()
window.close()
break;
case 103: // gg
if (keyLog[keyLog.length-2] != 103) {
break;
}
keyLog = [];
scrollSmoothTo(0);
return;
case 71: // G
scrollSmoothTo(document.documentElement.scrollHeight)
keyLog = [];
return;
default:
keyLog = [];
break;
}
// window.scrollBy(h, v);
var scrollTop = document.documentElement.scrollTop || document.body.scrollTop;
scrollSmoothTo(v + scrollTop)
};
})();
var scrollSmoothTo = function (position) {
if (!window.requestAnimationFrame) {
window.requestAnimationFrame = function(callback, element) {
return setTimeout(callback, 17);
};
}
// 当前滚动高度
var scrollTop = document.documentElement.scrollTop || document.body.scrollTop;
// 滚动step方法
var step = function () {
// 距离目标滚动距离
var distance = position - scrollTop;
// 目标滚动位置
scrollTop = scrollTop + distance / 5;
if (Math.abs(distance) < 1) {
window.scrollTo(0, position);
} else {
window.scrollTo(0, scrollTop);
requestAnimationFrame(step);
}
};
step();
};