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file20.js
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file20.js
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/* JavaScript Document */
/*
目录:
1、工具函数
1.1、dom方法
1.2、事件相关
1.3、cookie与storage
1.4、增强函数
1.5、时间日期处理
1.6、格式化函数
1.7、浏览器相关
1.8、网络请求
1.9、项目中使用
1.10、跨域解决方案
1.99、自我拓展
2、常用插件
2.1、运动框架
2.2、轮播相关
2.3、特效
3、canvas操作
3.1、canvas
4、定位
4.1、高德地图相关
5、微信
5.1、微信支付与微信sdk调用
6、参考函数
6.1、各种参考函数
7、算法函数与设计模式
7.1、排序算法
7.2、其它算法
7.3、设计模式
8、vue框架
8.1、vue项目中用到
9、react框架
9.1、react项目中用到
10、严格模式
10.1、严格模式使用规则
*/
/*
1.1、dom方法
*/
//原生常用方法封装
function Id(id) {
return document.getElementById(id);
}
function Class(Class) {
return document.getElementsByClassName(Class);
}
function Tag(tag) {
return document.getElementsByTagName(tag);
}
function QS(Class) { //带上选择符号(包括属性),只能选一组中的一个元素
return document.querySelector(Class);
}
function QSA(Class) { //带上选择符号(包括属性),能选一组元素
return document.querySelectorAll(Class);
}
function Create(tag) {
return document.createElement(tag);
}
function Add(obj, obj1) {
obj.appendChild(obj1);
}
function Insert(obj, obj1, obj2) { //父元素,要插入的元素,插入元素的后一个兄弟元素
obj.insertBefore(obj1, obj2);
}
function Remove(obj, obj1) {
obj.removeChild(obj1);
}
function AddClass(obj, className) {
obj.classList.add(className);
}
function RemoveClass(obj, className) {
obj.classList.remove(className);
}
function ToggleClass(obj, className) {
obj.classList.toggle(className);
}
function HasClass(obj, className) {
return obj.classList.contains(className);
}
function parent(obj) {
return obj.parentElement || obj.parentNode;
}
function prevSibling(obj) {
return obj.previousElementSibling || obj.previousSibling;
}
function nextSibling(obj) {
return obj.nextElementSibling || obj.nextSibling;
}
function firstChild(obj) {
return obj.firstElementChild || obj.firstChild;
}
function lastChild(obj) {
return obj.lastElementChild || obj.lastChild;
}
//在指定的误差范围内,使用 Number.EPSILON 来比较两个数字是否相等
function numbersCloseEnoughToEqual(n1, n2) {
if (!Number.EPSILON) {
Number.EPSILON = Math.pow(2, -52);
}
return Math.abs(n1 - n2) < Number.EPSILON;
}
//滚动到指定位置
function scroll(obj, position, dis) {
var position = 'scroll' + position.toLowerCase().replace(/^[a-z]{1}/, position.charAt(0).toUpperCase());
if (obj === document || obj === document.body) {
document.documentElement[position] = document.body[position] = dis;
} else {
obj[position] = dis;
}
}
//获取对象样式
function getStyle(obj, attr) {
return obj.currentStyle ? obj.currentStyle[attr] : getComputedStyle(obj, false)[attr];
}
//获取到document的位置
function getPos(obj, attr) {
var obj1 = obj;
var value = 0;
var iPos = 0;
var i = 0;
while (obj) {
iPos = attr == 'left' ? obj.offsetLeft : iPos = obj.offsetTop;
value += iPos;
obj = obj.offsetParent;
i++;
}
return value;
}
//获取dom到document的位置和宽高集合
function getClientRect(dom) {
var rect = dom.getBoundingClientRect();
var scrollLeft = document.body.scrollLeft || document.documentElement.scrollLeft;
var scrollTop = document.body.scrollTop || document.documentElement.scrollTop;
var clientLeft = document.documentElement.clientLeft;
var clientTop = document.documentElement.clientTop;
var json = {
left: rect.left + scrollLeft - clientLeft,
top: rect.top + scrollTop - clientTop,
right: rect.right + scrollLeft,
bottom: rect.bottom + scrollTop,
dLeft: rect.left + clientLeft,
dTop: rect.top + clientTop,
rect: function () {
return {
left: this.left,
top: this.top,
right: this.right,
bottom: this.bottom,
dLeft: this.dLeft,
dTop: this.dTop,
width: rect.width || this.right - this.left,
height: rect.height || this.bottom - this.top,
};
},
};
return json.rect();
}
//碰撞检测(配合定时器使用)
function collide(obj1, obj2) {
var l1 = obj1.offsetLeft;
var r1 = obj1.offsetLeft + obj1.offsetWidth;
var t1 = obj1.offsetTop;
var b1 = obj1.offsetTop + obj1.offsetHeight;
var l2 = obj2.offsetLeft;
var r2 = obj2.offsetLeft + obj2.offsetWidth;
var t2 = obj2.offsetTop;
var b2 = obj2.offsetTop + obj2.offsetHeight;
return r1 < l2 || l1 > r2 || b1 < t2 || t1 > b2 ? false : true;
}
//实时监测两组物体碰撞并返回数据(性能良好:小于或等于2500次循环,性能上限:大于或等于10000次循环)
//class1,一组要做碰撞检测的元素的选择器字符串
//class2,另一组要做碰撞检测的元素的选择器字符串
//endFn,回调函数(处理逻辑)
//data[//返回的数据包
// {
// exist1:true,//碰撞元素1是否存在于碰撞数组
// exist2:true,//碰撞元素2是否存在于碰撞数组
// isRemove:true,//是否可以安全删除两个元素(两个元素都不存在于碰撞数组)
// obj1:obj1,//碰撞到的元素1
// obj2:obj2,//碰撞到的元素2
// pos1:{//碰撞元素1的位置
// left:left,
// top:top,
// },
// pos2:{//碰撞元素2的位置
// left:left,
// top:top,
// },
// }
//];
function watchObjectPZ(class1, class2, endFn) {
var colJson = {}; //保留准备处理的id
yydTimer(function () {
var data = [];
for (var i = 0; i < QSA(class1).length; i++) {
for (var j = 0; j < QSA(class2).length; j++) {
if (collide(QSA(class1)[i], QSA(class2)[j])) {
var exist1 = false;
var exist2 = false;
var condition = !colJson[QSA(class1)[i].id] && !colJson[QSA(class2)[j].id];
//元素是否存在于碰撞数组里
if (colJson[QSA(class1)[i].id]) exist1 = true;
if (colJson[QSA(class2)[j].id]) exist2 = true;
//用来存储碰撞后的id,以备下次判断使用
if (condition) colJson[QSA(class1)[i].id] = 1;
if (condition) colJson[QSA(class2)[j].id] = 1;
data.push({
exist1: exist1,
exist2: exist2,
isRemove: condition,
obj1: QSA(class1)[i],
obj2: QSA(class2)[j],
pos1: {
left: QSA(class1)[i].offsetLeft,
top: QSA(class1)[i].offsetTop,
},
pos2: {
left: QSA(class2)[j].offsetLeft,
top: QSA(class2)[j].offsetTop,
},
});
if (condition) break;
}
}
}
if (data.length) {
endFn && endFn(data);
}
}, 1000 / 60);
}
//选择器方式的碰撞检测
var collisionDetection = {
set: function (domList) { //设置以备检测列表的样式以及信息,父级需设置宽高,参数(元素列表)
var domList = domList.length ? domList : [domList];
for (var i = 0; i < domList.length; i++) {
var obj = domList[i];
var width = obj.offsetWidth;
var height = obj.offsetHeight;
var left = obj.offsetLeft;
var right = left + width;
var top = obj.offsetTop;
var bottom = top + height;
var dataInfo = {
name: obj.className,
width: width,
height: height,
left: left,
top: top,
};
obj.style.left = left + 'px';
obj.style.top = top + 'px';
obj.setAttribute('dataInfo', encodeURIComponent(JSON.stringify(dataInfo)));
}
for (var i = 0; i < obj.length; i++) {
var obj = obj[i];
obj.style.position = 'absolute';
}
return this;
},
get: function (self, other) { //获取当前元素碰撞到的元素列表,参数(当前元素,需检测元素的模板元素)
var otherDataInfo = JSON.parse(decodeURIComponent(other.getAttribute('dataInfo')) || '') || {};
var otherWidth = otherDataInfo.width;
var otherHeight = otherDataInfo.height;
var selfDataInfo = JSON.parse(decodeURIComponent(self.getAttribute('dataInfo')) || '') || {};
var selfWidth = selfDataInfo.width;
var selfHeight = selfDataInfo.height;
var selfLeft = selfDataInfo.left;
var selfTop = selfDataInfo.top;
var minLeftIndex = -1;
var maxLeftIndex = -1;
var minTopIndex = -1;
var maxTopIndex = -1;
var seletorInfo = {
name: 'floor',
width: otherWidth,
height: otherHeight,
};
var seletorArr = [];
minLeftIndex = Math.floor(selfLeft / otherWidth);
maxLeftIndex = Math.floor((selfLeft + selfWidth) / otherWidth);
minTopIndex = Math.floor(selfTop / otherHeight);
maxTopIndex = Math.floor((selfTop + selfHeight) / otherHeight);
if (~minLeftIndex && ~maxLeftIndex && ~minTopIndex && ~maxTopIndex) {
for (var i = minLeftIndex; i <= maxLeftIndex; i++) {
for (var j = minTopIndex; j <= maxTopIndex; j++) {
seletorInfo.left = i * otherWidth;
seletorInfo.top = j * otherHeight;
seletorArr.push(`[dataInfo="${encodeURIComponent(JSON.stringify(seletorInfo))}"]`);
}
}
}
var seletor = seletorArr.join(',');
var seletDom = QSA(seletor);
return seletDom;
},
};
//用js修改样式表
//linkHref(样式表完整名称)
//className(想要修改的选择器完整名称)
//json(json格式去写样式)
function jsStyle(linkHref, className, json) {
var sheets = document.styleSheets; //拿到所有样式表
var sheet = null;
for (var i = 0; i < sheets.length; i++) {
if (sheets[i].href) {
var sHref = sheets[i].href;
sHref = sHref.substring(sHref.lastIndexOf('/') + 1, sHref.length);
if (sHref == linkHref) {
sheet = sheets[i]; //拿到样式表对象
}
}
}
var rules = sheet.cssRules || sheet.rules; //拿到所有的样式
var rule = null;
for (var i = 0; i < rules.length; i++) {
if (rules[i].selectorText == className) {
rule = rules[i]; //拿到想要操作的那条样式
for (var attr in json) {
rule.style[attr] = json[attr];
}
}
}
return rule.cssText;
}
//重置file文件
//obj(file文件对象)
function resetFile(obj) {
var oFrom = document.createElement('form');
var oParent = obj.parentNode;
oFrom.appendChild(obj);
oFrom.reset();
oParent.appendChild(obj);
}
//路由切换回到顶部防闪屏(用于单页应用)
function routerChange() {
document.body.style.display = 'none';
setTimeout(function () {
document.body.style.display = 'block';
document.documentElement.scrollTop = document.body.scrollTop = 0;
});
}
//禁止与允许body滚动
function controlBodyScroll(disableScroll, goTop) {
var oHtml = document.documentElement;
var oBody = document.body;
if (disableScroll) {
oHtml.style.height = '100%';
oHtml.style.overflowY = 'hidden';
oBody.style.height = '100%';
oBody.style.overflowY = 'hidden';
} else {
oHtml.style.height = 'auto';
oHtml.style.overflowY = 'visible';
oBody.style.height = 'auto';
oBody.style.overflowY = 'visible';
}
if (goTop) {
oHtml.scrollTop = oBody.scrollTop = 0;
setTimeout(function () {
oHtml.scrollTop = oBody.scrollTop = 0;
});
}
}
/*
1.2、事件相关
*/
//绑定的方式阻止事件冒泡
function cBub(ev) {
var ev = ev || event;
if (ev.stopPropagation) ev.stopPropagation(); //标准
ev.cancelBubble = true; //ie
}
//绑定的方式阻止默认事件
function pDef(ev) {
var ev = ev || event;
if (ev.preventDefault) ev.preventDefault(); //标准
ev.returnValue = false; //ie
}
//兼容之前用到的fix函数
function fix(ev) {
pDef(ev);
}
//绑定事件,可重复绑定('事件名称'必须加引号)
function bind(obj, evname, fn) {
if (obj.addEventListener) {
obj.addEventListener(evname, fn, false);
if (evname == 'mousewheel') {
obj.addEventListener('DOMMouseScroll', fn, false);
}
} else {
obj.attachEvent('on' + evname, function () {
fn.call(obj);
});
}
}
//取消绑定,可重复取消('事件名称'必须加引号)
function unbind(obj, evname, fn) {
if (obj.removeEventListener) {
obj.removeEventListener(evname, fn, false);
if (evname == 'mousewheel') {
obj.removeEventListener('DOMMouseScroll', fn, false);
}
} else {
obj.detachEvent('on' + evname, fn);
}
}
//鼠标滚轮事件兼容
function MouseWheel(obj, upFn, downFn) {
bind(obj, 'mousewheel', mousewheelFn);
function mousewheelFn(ev) {
var ev = ev || event;
var up = true;
if (ev.wheelDelta) {
up = ev.wheelDelta > 0 ? true : false;
} else {
up = ev.detail < 0 ? true : false;
}
up ? upFn && upFn.call(obj, ev) : downFn && downFn.call(obj, ev);
pDef(ev);
}
}
//dom加载完毕执行函数
function domLoad(fn) {
var onOff = true;
setTimeout(function () {
if (document.readyState == 'complete') {
onOff && fn && fn('readyState');
onOff = false;
}
});
bind(document, 'DOMContentLoaded', function () {
onOff && fn && fn('DOMContentLoaded');
onOff = false;
});
bind(document, 'onreadystatechange', function () {
onOff && fn && fn('onreadystatechange');
onOff = false;
});
bind(window, 'load', function () {
onOff && fn && fn('load');
onOff = false;
});
}
//自动点击事件
function autoEvent(obj, event) {
if (document.createEvent) {
var evObj = document.createEvent('MouseEvents');
evObj.initEvent(event, true, false); //事件的类型、事件是否起泡、是否可以用 preventDefault() 方法取消事件
obj.dispatchEvent(evObj);
} else if (document.createEventObject) {
obj.fireEvent(event);
}
}
//生成32位唯一字符串(大小写字母数字组合)
function soleString32() {
var str = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
var timestamp = +new Date() + Math.floor(Math.random() * 10);
var resultStr = '';
for (var i = 0; i < 19; i++) {
resultStr += str.charAt(Math.floor(Math.random() * str.length));
}
resultStr += timestamp;
resultStr = resultStr.split('');
resultStr.sort(function (a, b) {
return Math.random() - 0.5;
});
resultStr = resultStr.join('');
return resultStr;
}
//生成添加boundary的字符串,用于小程序wx.request发送multipart/form-data请求的方法
function boundaryString(json) {
var id = soleString32();
var result = { id: id };
var data = '';
function createStr(key, value) {
var str = '--' + id + '\r\nContent-Disposition: form-data; name="' + key + '"\r\n\r\n' + value + '\r\n';
return str;
}
for (var attr in json) {
data += createStr(attr, json[attr]);
}
data += '--' + id + '--';
result.data = data;
return result;
}
//自定义事件的实现(发布订阅模式)
var customEvent = {
json: {},
on: function (evName, fn) {
if (Type(this.json[evName]) != 'object') {
this.json[evName] = {};
}
if (Type(fn) == 'function') {
fn.id = soleString32();
this.json[evName][fn.id] = fn;
}
return this;
},
emit: function (evName) {
var evFnArr = this.json[evName];
var params = Array.prototype.slice.call(arguments, 1);
if (Type(evFnArr) == 'object') {
for (var attr in this.json[evName]) {
if (Type(this.json[evName][attr]) == 'function') {
this.json[evName][attr].apply(this, params);
}
}
}
return this;
},
remove: function (evName, fn) {
var evFnArr = this.json[evName];
if (Type(evName) == 'string' && Type(evFnArr) == 'object') {
if (Type(fn) == 'function') {
if (fn.id) {
delete this.json[evName][fn.id];
} else {
for (var attr in this.json[evName]) {
if (this.json[evName][attr] + '' === fn + '') {
delete this.json[evName][attr];
break;
}
}
}
} else {
delete this.json[evName];
}
}
return this;
}
};
//兼容手机和pc端的拖拽事件方法(该方法不进行拖拽,只封装事件)
/*
option {
obj: obj, //被拖拽的对象
start: function (position, ev) {}, //拖拽开始的函数
move: function (position, ev) {}, //拖拽中的函数
end: function (position, ev) {}, //拖拽结束的函数
preventDefault: true, //是否阻止系统默认拖拽事件
}
*/
function onDrag(option) {
var obj = option.obj;
var start = option.start;
var move = option.move;
var end = option.end;
var preventDefault = option.preventDefault;
var position = {
sX: 0,
sY: 0,
mX: 0,
mY: 0,
eX: 0,
eY: 0,
};
isPhone() ? mo() : pc();
function mo() {
bind(obj, 'touchstart', fn1);
function fn1(ev) {
var ev = ev || event;
position.sX = ev.changedTouches[0].clientX;
position.sY = ev.changedTouches[0].clientY;
start && start.call(obj, position, ev);
}
bind(obj, 'touchmove', fn2);
function fn2(ev) {
var ev = ev || event;
position.mX = ev.changedTouches[0].clientX;
position.mY = ev.changedTouches[0].clientY;
move && move.call(obj, position, ev);
}
bind(obj, 'touchend', fn3);
function fn3() {
var ev = ev || event;
position.eX = ev.changedTouches[0].clientX;
position.eY = ev.changedTouches[0].clientY;
end && end.call(obj, position, ev);
}
}
function pc() {
obj.onmousedown = function (ev) {
var ev = ev || event;
position.sX = ev.clientX;
position.sY = ev.clientY;
if (obj.setCapture) obj.setCapture;
start && start.call(obj, position, ev);
document.onmousemove = function (ev) {
var ev = ev || event;
position.mX = ev.clientX;
position.mY = ev.clientY;
move && move.call(obj, position, ev);
};
document.onmouseup = function () {
document.onmousemove = document.onmouseup = null;
if (obj.releaseCapture) obj.releaseCapture;
var ev = ev || event;
position.eX = ev.clientX;
position.eY = ev.clientY;
end && end.call(obj, position, ev);
};
return false;
};
}
if (preventDefault) bind(obj, 'touchmove', pDef);
document.onselectstart = function () {
return false;
};
}
//兼容手机和电脑端的拖拽方法
function drag(obj, lMin, lMax, tMin, tMax, sFn, mFn, endFn) {
var disX = 0;
var disY = 0;
var lMin = lMin || 0;
var lMax = lMax || Math.max(document.documentElement.clientWidth, parseInt(getStyle(document.body, 'width'))) - parseInt(getStyle(obj, 'width'));
var tMin = tMin || 0;
var tMax = tMax || Math.max(document.documentElement.clientHeight, parseInt(getStyle(document.body, 'height'))) - parseInt(getStyle(obj, 'height'));
isPhone() ? mo() : pc();
function mo() {
bind(obj, 'touchstart', fn1);
function fn1(ev) {
var ev = ev || event;
disX = ev.changedTouches[0].clientX - css(obj, 'left');
disY = ev.changedTouches[0].clientY - css(obj, 'top');
sFn && sFn.call(obj, disX, disY);
}
bind(obj, 'touchmove', fn2);
function fn2(ev) {
var ev = ev || event;
var l = ev.changedTouches[0].clientX - disX;
var t = ev.changedTouches[0].clientY - disY;
if (l < lMin) l = lMin;
if (l > lMax) l = lMax;
if (t < tMin) t = tMin;
if (t > tMax) t = tMax;
css(obj, 'left', l + 'px');
css(obj, 'top', t + 'px');
mFn && mFn.call(obj, l, t);
}
bind(obj, 'touchend', fn3);
function fn3() {
endFn && endFn.call(obj);
}
}
function pc() {
obj.onmousedown = function (ev) {
var ev = ev || event;
disX = ev.clientX - css(obj, 'left');
disY = ev.clientY - css(obj, 'top');
if (obj.setCapture) obj.setCapture;
sFn && sFn.call(obj, disX, disY);
document.onmousemove = function (ev) {
var ev = ev || event;
var l = ev.clientX - disX;
var t = ev.clientY - disY;
if (l < lMin) l = lMin;
if (l > lMax) l = lMax;
if (t < tMin) t = tMin;
if (t > tMax) t = tMax;
css(obj, 'left', l + 'px');
css(obj, 'top', t + 'px');
mFn && mFn.call(obj, l, t);
};
document.onmouseup = function () {
document.onmousemove = document.onmouseup = null;
if (obj.releaseCapture) obj.releaseCapture;
endFn && endFn.call(obj);
};
return false;
};
}
bind(obj, 'touchmove', pDef);
document.onselectstart = function () {
return false;
};
}
/*
1.3、cookie与storage
*/
//cookie操作
var cookie = {
set: function (key, value, sec) {
var value = value;
var sec = sec || 60 * 60 * 24 * 30;
var type = Type(value);
var oDate = new Date();
switch (type) {
case 'object':
case 'array':
value = JSON.stringify(value);
break;
}
oDate.setSeconds(oDate.getSeconds() + sec);
oDate = oDate.toGMTString();
document.cookie = key + '=' + encodeURIComponent(value) + ';expires=' + oDate;
},
get: function (key) {
var str = document.cookie;
var reg = new RegExp('(^|(;\\s))' + key + '=([^;\\s]+)((;\\s)|$)');
var result = str.match(reg);
result = result ? decodeURIComponent(result[3]) : '';
try {
result = Type(+result) == 'number' ? result : JSON.parse(result);
} catch (e) {}
return result;
},
getKeys: function () {
var str = document.cookie;
var reg1 = /\=+/g;
var reg2 = /(\;|[\;\s])+/g;
try {
if (str.length) {
str = str.replace(reg1, '":"');
str = str.replace(reg2, '","');
str = '{"' + str;
str += '"}';
str = JSON.parse(str);
} else {
str = {};
}
} catch (e) {}
return str;
},
getAll: function () {
var json = {};
var keys = this.getKeys();
for (var attr in keys) {
json[attr] = this.get(attr);
}
return json;
},
remove: function (key) {
var oDate = new Date();
oDate.setDate(oDate.getDate() - 1);
oDate = oDate.toGMTString();
document.cookie = key + '=;expires=' + oDate;
},
clear: function () {
var keys = this.getKeys();
for (var attr in keys) {
this.remove(attr);
}
},
};
//创建Store对象(增强localStorage或sessionStorage,直接存取对象或者数组)
var Store = function () {
this.name = 'Store';
};
Store.prototype = {
init: function (type) {
this.store = window[type];
return this;
},
set: function (key, value) {
var type = Type(value);
switch (type) {
case 'object':
case 'array':
this.store.setItem(key, JSON.stringify(value));
break;
default:
this.store.setItem(key, value);
}
},
get: function (key) {
var value = this.store.getItem(key);
try {
value = Type(+value) == 'number' ? value : JSON.parse(value);
} catch (e) {}
return value;
},
getAll: function () {
var store = copyJson(this.store);
var json = {};
var value = '';
for (var attr in store) {
try {
value = store[attr];
value = Type(+value) == 'number' ? value : JSON.parse(value);
} catch (e) {}
json[attr] = value;
}
return json;
},
remove: function (key) {
this.store.removeItem(key);
},
clear: function () {
this.store.clear();
},
};
//localStorage操作
var lStore = new Store().init('localStorage');
//sessionStorage操作
var sStore = new Store().init('sessionStorage');
//js操作css变量
var cssVar = {
isSupport(callBack) {
var isSupported = window.CSS && window.CSS.supports && window.CSS.supports('--a', 0);
if (isSupported) {
return callBack && callBack();
} else {
console.log('当前浏览器不支持CSS变量');
}
},
set(key, value) {
this.isSupport(function () {
document.body.style.setProperty('--' + key, value);
});
},
get(key) {
return this.isSupport(function () {
return document.body.style.getPropertyValue('--' + key).trim();
});
},
remove(key) {
return this.isSupport(function () {
return document.body.style.removeProperty('--' + key);
});
},
};
/*
1.4、增强函数
*/
//判断数据类型的方法(对typeof的增强,9种常用类型的判断,返回小写字符串)
function Type(obj) {
var arr = ['null', 'undefined', 'number', 'string', 'boolean', 'nan', 'array', 'object', 'function'];
if (obj === null) {
return 'null';
}
if (obj !== obj) {
return 'nan';
}
if (typeof Array.isArray === 'function') {
if (Array.isArray(obj)) { //浏览器支持则使用isArray()方法
return 'array';
}
} else { //否则使用toString方法
if (Object.prototype.toString.call(obj) === '[object Array]') {
return 'array';
}
}
return (typeof obj).toLowerCase();
}
//判断数据类型的方法(对typeof的增强,11种类型的判断,返回小写字符串)
function Type1(obj) {
var arr = ['null', 'undefined', 'number', 'string', 'boolean', 'nan', 'array', 'object', 'function', 'date', 'regexp'];
var t, c, n;
if (obj === null) {
return 'null';
}
if (obj === undefined) {
return 'undefined';
}
if (obj === false || obj === true) {
return 'boolean';
}
if (obj !== obj) {
return 'nan';
}
if ((t = typeof obj) !== 'object') {
return t.toLowerCase();
}
if ((c = classof(obj)) !== 'Object') {