JavaScript
4. String 字符串操作
/**
* 去除空格
* @param {str}
* @param {type}
* type: 1-所有空格 2-前后空格 3-前空格 4-后空格
* @return {String}
*/
trim (str, type) {
type = type || 1
switch (type) {
case 1:
return str.replace(/\s+/g, "");
case 2:
return str.replace(/(^\s*)|(\s*$)/g, "");
case 3:
return str.replace(/(^\s*)/g, "");
case 4:
return str.replace(/(\s*$)/g, "");
default:
return str;
}
}
/**
* @param {str}
* @param {type}
* type: 1:首字母大写 2：首页母小写 3：大小写转换 4：全部大写 5：全部小写
* @return {String}
*/
changeCase (str, type) {
type = type || 4
switch (type) {
case 1:
return str.replace(/\b\w+\b/g, function (word) {
return word.substring(0, 1).toUpperCase() + word.substring(1).toLowerCase();
});
case 2:
return str.replace(/\b\w+\b/g, function (word) {
return word.substring(0, 1).toLowerCase() + word.substring(1).toUpperCase();
});
case 3:
return str.split('').map( function(word){
if (/[a-z]/.test(word)) {
return word.toUpperCase();
}else{
return word.toLowerCase()
}
}).join('')
case 4:
return str.toUpperCase();
case 5:
return str.toLowerCase();
default:
return str;
}
}
/*
检测密码强度
*/
checkPwd (str) {
var Lv = 0;
if (str.length < 6) {
return Lv
}
if (/[0-9]/.test(str)) {
Lv++
}
if (/[a-z]/.test(str)) {
Lv++
}
if (/[A-Z]/.test(str)) {
Lv++
}
if (/[\.|-|_]/.test(str)) {
Lv++
}
return Lv;
}
/*过滤html代码(把<>转换)*/
filterTag (str) {
str = str.replace(/&/ig, "&");
str = str.replace(/</ig, "<");
str = str.replace(/>/ig, ">");
str = str.replace(" ", " ");
return str;
}
5. Number
/*随机数范围*/
random (min, max) {
if (arguments.length === 2) {
return Math.floor(min + Math.random() * ( (max+1) - min ))
}else{
return null;
}
}
/*将阿拉伯数字翻译成中文的大写数字*/
numberToChinese (num) {
var AA = new Array("零", "一", "二", "三", "四", "五", "六", "七", "八", "九", "十");
var BB = new Array("", "十", "百", "仟", "萬", "億", "点", "");
var a = ("" + num).replace(/(^0*)/g, "").split("."),
k = 0,
re = "";
for(var i = a[0].length - 1; i >= 0; i--) {
switch(k) {
case 0:
re = BB[7] + re;
break;
case 4:
if(!new RegExp("0{4}//d{" + (a[0].length - i - 1) + "}$")
.test(a[0]))
re = BB[4] + re;
break;
case 8:
re = BB[5] + re;
BB[7] = BB[5];
k = 0;
break;
}
if(k % 4 == 2 && a[0].charAt(i + 2) != 0 && a[0].charAt(i + 1) == 0)
re = AA[0] + re;
if(a[0].charAt(i) != 0)
re = AA[a[0].charAt(i)] + BB[k % 4] + re;
k++;
}
if(a.length > 1) // 加上小数部分(如果有小数部分)
{
re += BB[6];
for(var i = 0; i < a[1].length; i++)
re += AA[a[1].charAt(i)];
}
if(re == '一十')
re = "十";
if(re.match(/^一/) && re.length == 3)
re = re.replace("一", "");
return re;
}
/*将数字转换为大写金额*/
changeToChinese (Num) {
//判断如果传递进来的不是字符的话转换为字符
if(typeof Num == "number") {
Num = new String(Num);
};
Num = Num.replace(/,/g, "") //替换tomoney()中的“,”
Num = Num.replace(/ /g, "") //替换tomoney()中的空格
Num = Num.replace(/￥/g, "") //替换掉可能出现的￥字符
if(isNaN(Num)) { //验证输入的字符是否为数字
//alert("请检查小写金额是否正确");
return "";
};
//字符处理完毕后开始转换，采用前后两部分分别转换
var part = String(Num).split(".");
var newchar = "";
//小数点前进行转化
for(var i = part[0].length - 1; i >= 0; i--) {
if(part[0].length > 10) {
return "";
//若数量超过拾亿单位，提示
}
var tmpnewchar = ""
var perchar = part[0].charAt(i);
switch(perchar) {
case "0":
tmpnewchar = "零" + tmpnewchar;
break;
case "1":
tmpnewchar = "壹" + tmpnewchar;
break;
case "2":
tmpnewchar = "贰" + tmpnewchar;
break;
case "3":
tmpnewchar = "叁" + tmpnewchar;
break;
case "4":
tmpnewchar = "肆" + tmpnewchar;
break;
case "5":
tmpnewchar = "伍" + tmpnewchar;
break;
case "6":
tmpnewchar = "陆" + tmpnewchar;
break;
case "7":
tmpnewchar = "柒" + tmpnewchar;
break;
case "8":
tmpnewchar = "捌" + tmpnewchar;
break;
case "9":
tmpnewchar = "玖" + tmpnewchar;
break;
}
switch(part[0].length - i - 1) {
case 0:
tmpnewchar = tmpnewchar + "元";
break;
case 1:
if(perchar != 0) tmpnewchar = tmpnewchar + "拾";
break;
case 2:
if(perchar != 0) tmpnewchar = tmpnewchar + "佰";
break;
case 3:
if(perchar != 0) tmpnewchar = tmpnewchar + "仟";
break;
case 4:
tmpnewchar = tmpnewchar + "万";
break;
case 5:
if(perchar != 0) tmpnewchar = tmpnewchar + "拾";
break;
case 6:
if(perchar != 0) tmpnewchar = tmpnewchar + "佰";
break;
case 7:
if(perchar != 0) tmpnewchar = tmpnewchar + "仟";
break;
case 8:
tmpnewchar = tmpnewchar + "亿";
break;
case 9:
tmpnewchar = tmpnewchar + "拾";
break;
}
var newchar = tmpnewchar + newchar;
}
//小数点之后进行转化
if(Num.indexOf(".") != -1) {
if(part[1].length > 2) {
// alert("小数点之后只能保留两位,系统将自动截断");
part[1] = part[1].substr(0, 2)
}
for(i = 0; i < part[1].length; i++) {
tmpnewchar = ""
perchar = part[1].charAt(i)
switch(perchar) {
case "0":
tmpnewchar = "零" + tmpnewchar;
break;
case "1":
tmpnewchar = "壹" + tmpnewchar;
break;
case "2":
tmpnewchar = "贰" + tmpnewchar;
break;
case "3":
tmpnewchar = "叁" + tmpnewchar;
break;
case "4":
tmpnewchar = "肆" + tmpnewchar;
break;
case "5":
tmpnewchar = "伍" + tmpnewchar;
break;
case "6":
tmpnewchar = "陆" + tmpnewchar;
break;
case "7":
tmpnewchar = "柒" + tmpnewchar;
break;
case "8":
tmpnewchar = "捌" + tmpnewchar;
break;
case "9":
tmpnewchar = "玖" + tmpnewchar;
break;
}
if(i == 0) tmpnewchar = tmpnewchar + "角";
if(i == 1) tmpnewchar = tmpnewchar + "分";
newchar = newchar + tmpnewchar;
}
}
//替换所有无用汉字
while(newchar.search("零零") != -1)
newchar = newchar.replace("零零", "零");
newchar = newchar.replace("零亿", "亿");
newchar = newchar.replace("亿万", "亿");
newchar = newchar.replace("零万", "万");
newchar = newchar.replace("零元", "元");
newchar = newchar.replace("零角", "");
newchar = newchar.replace("零分", "");
if(newchar.charAt(newchar.length - 1) == "元") {
newchar = newchar + "整"
}
return newchar;
}
6. Http
/**
* @param {setting}
*/
ajax(setting){
//设置参数的初始值
var opts={
method: (setting.method || "GET").toUpperCase(), //请求方式
url: setting.url || "", // 请求地址
async: setting.async || true, // 是否异步
dataType: setting.dataType || "json", // 解析方式
data: setting.data || "", // 参数
success: setting.success || function(){}, // 请求成功回调
error: setting.error || function(){} // 请求失败回调
}
// 参数格式化
function params_format (obj) {
var str = ''
for (var i in obj) {
str += i + '=' + obj[i] + '&'
}
return str.split('').slice(0, -1).join('')
}
// 创建ajax对象
var xhr=new XMLHttpRequest();
// 连接服务器open(方法GET/POST，请求地址， 异步传输)
if(opts.method == 'GET'){
xhr.open(opts.method, opts.url + "?" + params_format(opts.data), opts.async);
xhr.send();
}else{
xhr.open(opts.method, opts.url, opts.async);
xhr.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
xhr.send(opts.data);
}
/*
** 每当readyState改变时，就会触发onreadystatechange事件
** readyState属性存储有XMLHttpRequest的状态信息
** 0 ：请求未初始化
** 1 ：服务器连接已建立
** 2 ：请求已接受
** 3 : 请求处理中
** 4 ：请求已完成，且相应就绪
*/
xhr.onreadystatechange = function() {
if (xhr.readyState === 4 && (xhr.status === 200 || xhr.status === 304)) {
switch(opts.dataType){
case "json":
var json = JSON.parse(xhr.responseText);
opts.success(json);
break;
case "xml":
opts.success(xhr.responseXML);
break;
default:
opts.success(xhr.responseText);
break;
}
}
}
xhr.onerror = function(err) {
opts.error(err);
}
}
/**
* @param {url}
* @param {setting}
* @return {Promise}
*/
fetch(url, setting) {
//设置参数的初始值
let opts={
method: (setting.method || 'GET').toUpperCase(), //请求方式
headers : setting.headers || {}, // 请求头设置
credentials : setting.credentials || true, // 设置cookie是否一起发送
body: setting.body || {},
mode : setting.mode || 'no-cors', // 可以设置 cors, no-cors, same-origin
redirect : setting.redirect || 'follow', // follow, error, manual
cache : setting.cache || 'default' // 设置 cache 模式 (default, reload, no-cache)
}
let dataType = setting.dataType || "json", // 解析方式
data = setting.data || "" // 参数
// 参数格式化
function params_format (obj) {
var str = ''
for (var i in obj) {
str += `${i}=${obj[i]}&`
}
return str.split('').slice(0, -1).join('')
}
if (opts.method === 'GET') {
url = url + (data?`?${params_format(data)}`:'')
}else{
setting.body = data || {}
}
return new Promise( (resolve, reject) => {
fetch(url, opts).then( async res => {
let data = dataType === 'text' ? await res.text() :
dataType === 'blob' ? await res.blob() : await res.json()
resolve(data)
}).catch( e => {
reject(e)
})
})
}
7. DOM
$ (selector){
var type = selector.substring(0, 1);
if (type === '#') {
if (document.querySelecotor) return document.querySelector(selector)
return document.getElementById(selector.substring(1))
}else if (type === '.') {
if (document.querySelecotorAll) return document.querySelectorAll(selector)
return document.getElementsByClassName(selector.substring(1))
}else{
return document['querySelectorAll' ? 'querySelectorAll':'getElementsByTagName'](selector)
}
}
/*检测类名*/
hasClass (ele, name) {
return ele.className.match(new RegExp('(\\s|^)' + name + '(\\s|$)'));
}
/*添加类名*/
addClass (ele, name) {
if (!this.hasClass(ele, name)) ele.className += " " + name;
}
/*删除类名*/
removeClass (ele, name) {
if (this.hasClass(ele, name)) {
var reg = new RegExp('(\\s|^)' + name + '(\\s|$)');
ele.className = ele.className.replace(reg, '');
}
}
/*替换类名*/
replaceClass (ele, newName, oldName) {
this.removeClass(ele, oldName);
this.addClass(ele, newName);
}
/*获取兄弟节点*/
siblings (ele) {
console.log(ele.parentNode)
var chid = ele.parentNode.children,eleMatch = [];
for(var i = 0, len = chid.length; i < len; i ++){
if(chid[i] != ele){
eleMatch.push(chid[i]);
}
}
return eleMatch;
}
/*获取行间样式属性*/
getByStyle (obj,name){
if(obj.currentStyle){
return obj.currentStyle[name];
}else{
return getComputedStyle(obj,false)[name];
}
}
8. Storage 储存操作
class StorageFn {
constructor () {
this.ls = window.localStorage;
this.ss = window.sessionStorage;
}
/*-----------------cookie---------------------*/
/*设置cookie*/
setCookie (name, value, day) {
var setting = arguments[0];
if (Object.prototype.toString.call(setting).slice(8, -1) === 'Object'){
for (var i in setting) {
var oDate = new Date();
oDate.setDate(oDate.getDate() + day);
document.cookie = i + '=' + setting[i] + ';expires=' + oDate;
}
}else{
var oDate = new Date();
oDate.setDate(oDate.getDate() + day);
document.cookie = name + '=' + value + ';expires=' + oDate;
}
}
/*获取cookie*/
getCookie (name) {
var arr = document.cookie.split('; ');
for (var i = 0; i < arr.length; i++) {
var arr2 = arr[i].split('=');
if (arr2[0] == name) {
return arr2[1];
}
}
return '';
}
/*删除cookie*/
removeCookie (name) {
this.setCookie(name, 1, -1);
}
/*-----------------localStorage---------------------*/
/*设置localStorage*/
setLocal(key, val) {
var setting = arguments[0];
if (Object.prototype.toString.call(setting).slice(8, -1) === 'Object'){
for(var i in setting){
this.ls.setItem(i, JSON.stringify(setting[i]))
}
}else{
this.ls.setItem(key, JSON.stringify(val))
}
}
/*获取localStorage*/
getLocal(key) {
if (key) return JSON.parse(this.ls.getItem(key))
return null;
}
/*移除localStorage*/
removeLocal(key) {
this.ls.removeItem(key)
}
/*移除所有localStorage*/
clearLocal() {
this.ls.clear()
}
/*-----------------sessionStorage---------------------*/
/*设置sessionStorage*/
setSession(key, val) {
var setting = arguments[0];
if (Object.prototype.toString.call(setting).slice(8, -1) === 'Object'){
for(var i in setting){
this.ss.setItem(i, JSON.stringify(setting[i]))
}
}else{
this.ss.setItem(key, JSON.stringify(val))
}
}
/*获取sessionStorage*/
getSession(key) {
if (key) return JSON.parse(this.ss.getItem(key))
return null;
}
/*移除sessionStorage*/
removeSession(key) {
this.ss.removeItem(key)
}
/*移除所有sessionStorage*/
clearSession() {
this.ss.clear()
}
}
9. Other 其它操作
/*获取网址参数*/
getURL(name){
var reg = new RegExp("(^|&)"+ name +"=([^&]*)(&|$)");
var r = decodeURI(window.location.search).substr(1).match(reg);
if(r!=null) return r[2]; return null;
}
/*获取全部url参数,并转换成json对象*/
getUrlAllParams (url) {
var url = url ? url : window.location.href;
var _pa = url.substring(url.indexOf('?') + 1),
_arrS = _pa.split('&'),
_rs = {};
for (var i = 0, _len = _arrS.length; i < _len; i++) {
var pos = _arrS[i].indexOf('=');
if (pos == -1) {
continue;
}
var name = _arrS[i].substring(0, pos),
value = window.decodeURIComponent(_arrS[i].substring(pos + 1));
_rs[name] = value;
}
return _rs;
}
/*删除url指定参数，返回url*/
delParamsUrl(url, name){
var baseUrl = url.split('?')[0] + '?';
var query = url.split('?')[1];
if (query.indexOf(name)>-1) {
var obj = {}
var arr = query.split("&");
for (var i = 0; i < arr.length; i++) {
arr[i] = arr[i].split("=");
obj[arr[i][0]] = arr[i][1];
};
delete obj[name];
var url = baseUrl + JSON.stringify(obj).replace(/[\"\{\}]/g,"").replace(/\:/g,"=").replace(/\,/g,"&");
return url
}else{
return url;
}
}
/*获取十六进制随机颜色*/
getRandomColor () {
return '#' + (function(h) {
return new Array(7 - h.length).join("0") + h;
})((Math.random() * 0x1000000 << 0).toString(16));
}
/*图片加载*/
imgLoadAll(arr,callback){
var arrImg = [];
for (var i = 0; i < arr.length; i++) {
var img = new Image();
img.src = arr[i];
img.onload = function(){
arrImg.push(this);
if (arrImg.length == arr.length) {
callback && callback();
}
}
}
}
/*音频加载*/
loadAudio(src, callback) {
var audio = new Audio(src);
audio.onloadedmetadata = callback;
audio.src = src;
}
/*DOM转字符串*/
domToStirng(htmlDOM){
var div= document.createElement("div");
div.appendChild(htmlDOM);
return div.innerHTML
}
/*字符串转DOM*/
stringToDom(htmlString){
var div= document.createElement("div");
div.innerHTML=htmlString;
return div.children[0];
}
/**
* 光标所在位置插入字符，并设置光标位置
*
* @param {dom} 输入框
* @param {val} 插入的值
* @param {posLen} 光标位置处在 插入的值的哪个位置
*/
setCursorPosition (dom,val,posLen) {
var cursorPosition = 0;
if(dom.selectionStart){
cursorPosition = dom.selectionStart;
}
this.insertAtCursor(dom,val);
dom.focus();
console.log(posLen)
dom.setSelectionRange(dom.value.length,cursorPosition + (posLen || val.length));
}
/*光标所在位置插入字符*/
insertAtCursor(dom, val) {
if (document.selection){
dom.focus();
sel = document.selection.createRange();
sel.text = val;
sel.select();
}else if (dom.selectionStart || dom.selectionStart == '0'){
let startPos = dom.selectionStart;
let endPos = dom.selectionEnd;
let restoreTop = dom.scrollTop;
dom.value = dom.value.substring(0, startPos) + val + dom.value.substring(endPos, dom.value.length);
if (restoreTop > 0){
dom.scrollTop = restoreTop;
}
dom.focus();
dom.selectionStart = startPos + val.length;
dom.selectionEnd = startPos + val.length;
} else {
dom.value += val;
dom.focus();
}
}
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