js-Extensions-touchJS是一个非常简单的原生js touch扩展，用于适配移动端的常用touch操作（点击tab、双击dbTab、长按longPress、长按终止longPressCancel、滑动swipe以及具体滑动方向left right up down）
当前为
此脚本不应直接安装。它是供其他脚本使用的外部库，要使用该库请加入元指令 // @require https://update.gf.qytechs.cn/scripts/455704/1123826/js-Extensions-touchJS.js
// ==UserScript==
// @name js-Extensions-touchJS
// @namespace http://tampermonkey.net/
// @version 1.5
// @description js-Extensions-touchJS是一个非常简单的原生js touch扩展，用于适配移动端的常用touch操作（点击tab、双击dbTab、长按longPress、长按终止longPressCancel、滑动swipe以及具体滑动方向left right up down）
// @author tutu辣么可爱(greasyfork)/IcedWatermelonJuice(github)
// @grant none
// ==/UserScript==
(function() {
var touchJS = {}
function jsonExtend(json1 = {}, json2 = {}, json3 = {}) {
return Object.assign(json1, json2, json3)
}
function getFnName(fn) {
if (fn.name) {
return fn.name
} else {
var fnstr = fn.toString().match(/function\s*([^(]*)\(/);
return fnstr ? fnstr[1] : null
}
}
touchJS.bind = function(target, evt, fn, fnName = null) {
if (!target || typeof target !== "object") {
console.error("touchJS.bind(target, evt, fn, fnName)参数错误，对象(target)不存在");
return false;
}
// 预处理
var that = target;
that.libForTouchJsExt = that.libForTouchJsExt ? that.libForTouchJsExt : {};
var fnMap = jsonExtend({}, that.libForTouchJsExt),
fnKeyArray = ["swipe", "left", "right", "up", "down", "tap", "dbTap", "longPress",
"longPressCancel"
]; //可用的事件名
function addFn(e, f, n) {
if (fnKeyArray.indexOf(e) < 0) {
let msg = "touchJS.bind(target, evt, fn, fnName)参数错误，指定事件(evt)不支持。支持的事件列表:";
console.error(msg + fnKeyArray.toString());
return false;
}
fnMap[e] = fnMap[e] ? fnMap[e] : {};
if (!n) { //无方法名，获取并使用默认数字id
defAry = Object.keys(fnMap[e]).filter((v) => {
/^\d{1,}$/.test(v)
});
//获取可用数字id
if (!fnMap[e][defAry.length]) { //假设id连续，长度就是新id
n = defAry.length
} else { //说明id不连续（手动删过事件方法），寻找中间缺少的id
defAry.sort((a, b) => {
return a - b
});
for (let i = 0; i < defAry.length; i++) {
if (defAry[i] !== i) {
n = i;
break;
}
}
}
}
fnMap[e][n] = f
return true
}
if (typeof evt === "string" && typeof fn === "function") {
if (!addFn(evt, fn, fnName ? fnName : getFnName(fn))) {
return false
}
} else if (typeof evt === "object" && !fn) {
for (let e in evt) {
if (!addFn(e, evt[e], getFnName(evt[e]))) {
return false
}
}
}
that.libForTouchJsExt = jsonExtend({}, that.libForTouchJsExt, fnMap);
//添加事件
if (!that.libForTouchJsExt.eventLoaded) {
that.libForTouchJsExt.eventLoaded = true;
var execFn = function(evt,params={}) { //执行方法
if (!evt) {
return false
}
if (/left|right|up|down/.test(evt)) {
evt = [evt, "swipe"];
} else {
evt = [evt];
}
params.target = that;
evt.forEach((e) => {
e = that.libForTouchJsExt[e] ? that.libForTouchJsExt[e] : {};
for (let i in e) {
if (typeof e[i] === "function") {
e[i](params);
}
}
})
}
var lp_timer = -1,
tap_timer = -1,
lp_flag = false,
swipe_flag = false,
tap_sum = 0,
pos = {
x: 0,
y: 0
};
that.addEventListener('touchstart', ts, false);
that.addEventListener('touchmove', tm, false);
that.addEventListener('touchend', te, false);
//具体实现
function dir(past, now) { //判方向
if (Math.abs(past.x - now.x) > Math.abs(past.y - now.y)) {
if (now.x > past.x) {
return "right"
} else {
return "left"
}
} else {
if (now.y > past.y) {
return "down"
} else {
return "up"
}
}
return null
}
function ts(e) { //touchstart
e = e || window.event
lp_timer !== -1 && clearTimeout(lp_timer);
lp_timer = -1;
lp_flag = false;
swipe_flag = false;
pos = {
x: e.changedTouches[0].clientX,
y: e.changedTouches[0].clientY
}
lp_timer = setTimeout(function() {
if (!swipe_flag) {
lp_timer = -1;
lp_flag = true;
execFn("longPress", {
0: pos
});
}
}, 600)
}
function tm(e) { //touchmove
var e = e || window.event;
let temp = {
x: e.changedTouches[0].clientX,
y: e.changedTouches[0].clientY
}
if (!lp_flag && (Math.abs(pos.x - temp.x) > 10 || Math.abs(pos.y - temp.y) > 10)) {
swipe_flag = true;
lp_timer !== -1 && clearTimeout(lp_timer);
lp_timer = -1;
execFn(dir(pos, temp), {
0: pos,
1: temp
});
}
pos = temp;
}
function te(e) { //touchend
var e = e || window.event;
lp_timer !== -1 && clearTimeout(lp_timer);
tap_timer !== -1 && clearTimeout(tap_timer);
lp_timer = -1;
tap_timer = -1;
if (lp_flag) {
execFn("longPressCancel", {
0: pos
});
} else if (!swipe_flag) {
tap_sum += 1;
if (tap_sum >= 2) {
tap_sum = 0;
execFn("dbTap", {
0: pos
});
} else {
tap_timer = setTimeout(() => {
tap_sum = 0;
execFn("tap", {
0: pos
});
}, 200)
}
}
}
}
return that
}
touchJS.unbind = function(target, evt, fnName = null) {
if (!target || typeof target !== "object") {
console.error("touchJS.unbind(target, evt, fnName)参数错误，对象(target)不存在");
return false;
}
var that = target;
if (typeof evt === "string") {
that.libForTouchJsExt = that.libForTouchJsExt ? that.libForTouchJsExt : {};
if (that.libForTouchJsExt[evt]) {
if (fnName) {
fnName = typeof fnName === "function" ? getFnName(fnName) : fnName;
delete that.libForTouchJsExt[evt][fnName];
} else {
delete that.libForTouchJsExt[evt]
}
}
}
return that
}
window.touchJS=touchJS;
})();
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