//千分位加逗号
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const thousands = (num) => {
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let suff;
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let pre;
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if(num){
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num = num +'';
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[pre,suff] = num.split('.')
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if(pre.length <= 3) return num;
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pre = pre.split('').reverse()
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for(let i in pre){
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if(i>1 && i%3 === 0){
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pre[i] = pre[i]+',';
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}
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}
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return pre.reverse().join('')+(suff ? ('.'+suff):'');
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}
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return num;
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}
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//保留小数位数
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const decimal = (num,digit) => {
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let suff;
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let pre;
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//千分位会加入，导致scienceNum 转换NAN, 建议先使用decimal, 再用thousands
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num = scienceNum(num)
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if(num=='NaN' || !num){
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num=0}
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if(num){
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num = num +'';
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[pre,suff] = num.split('.')
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if(suff === undefined) {
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let zero = '';
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for(let i=0; i<digit; i++){
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zero = zero + '0'
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}
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suff = zero
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}
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else if(suff && suff.length < digit){
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let zero = '';
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for(let i=0; i<(digit-suff.length); i++){
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zero = zero + '0'
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}
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suff = suff + zero
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}
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else if(suff.length>digit){
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suff = suff.substr(0,digit)
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}
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if(suff) return pre + '.' + suff
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else return pre
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}
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return num;
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}
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// 两个数据相减计算精度
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const accMinus = (arg1,arg2) => {
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var r1,r2,m,n;
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try{r1=arg1.toString().split(".")[1].length}catch(e){r1=0}
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try{r2=arg2.toString().split(".")[1].length}catch(e){r2=0}
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m=Math.pow(10,Math.max(r1,r2));
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//last modify by deeka
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//动态控制精度长度
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n=(r1>=r2)?r1:r2;
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return ((arg1*m-arg2*m)/m).toFixed(n);
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}
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// 两个数据相加计算精度
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const accAdd = (arg1,arg2)=>{
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var r1,r2,m;
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try{r1=arg1.toString().split(".")[1].length}catch(e){r1=0}
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try{r2=arg2.toString().split(".")[1].length}catch(e){r2=0}
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m=Math.pow(10,Math.max(r1,r2));
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return (arg1*m+arg2*m)/m;
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}
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export const accMul = (arg1,arg2) => {
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if(!arg1 || !arg2){return 0}
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var m=0,s1=arg1.toString(),s2=arg2.toString();
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try{
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m+=s1.split(".")[1].length;
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}catch(e){}
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try{
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m+=s2.split(".")[1].length;
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}catch(e){}
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return Number(s1.replace(".",""))*Number(s2.replace(".",""))/Math.pow(10,m);
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}
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const accDev = (arg1, arg2) => {
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if(!arg1 ||(!arg2) ){
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return 0
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}
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var t1 = 0,
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t2 = 0,
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r1, r2;
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try {
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t1 = arg1.toString().split(".")[1].length
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} catch (e) {}
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try {
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t2 = arg2.toString().split(".")[1].length
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} catch (e) {}
|
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r1 = Number(arg1.toString().replace(".", ""))
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r2 = Number(arg2.toString().replace(".", ""))
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let num= (r1 / r2) * Math.pow(10, t2 - t1);
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return Math.round(num)
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}
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//判断是否是科学技术法，是则转化string
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const scienceNum = (amount) => {
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var num = 0;
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var result = [];
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amount = amount ? new String(amount) : new String(0);
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if((amount.indexOf('E') != -1) || (amount.indexOf('e') != -1)) {
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(amount.indexOf('E') != -1)? num = amount.indexOf('E'):num = amount.indexOf('e');
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var decimal = amount.substr(0, num);
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// devide the sentice efficial number
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var decArr = decimal.split('.',2);
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// total 10 power
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var power = amount.substr(num+1,amount.length);
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// symbol + -
|
var symbol = power.substr(0,1);
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power = power.substr(1, power.length);
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power = power * 1.0;
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if('+' == symbol) {
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// the number of 0 is power - decArr[1]
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power = power - decArr[1].length;
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// the return data
|
while(power > 0) {
|
result.unshift(0);
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power -= 1;
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}
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result.unshift(decArr[1] * 1.0);
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result.unshift(decArr[0] * 1.0);
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} else {
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if(decArr[1]){
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var decArrlen = decArr[1].length
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}else{
|
var decArrlen=1
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}
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power = power - decArrlen ;
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var result = [0];
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result.push('.');
|
while(power > 0) {
|
result.push(0);
|
power -= 1;
|
}
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result.push(decArr);
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}
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result.join("");
|
result = result + '';
|
amount = result.replace(/,/g,'');
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}
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// number类型 会省略小数部分 末尾的0 如 0.0003750 ， 返回字符串更好
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// else{
|
// amount = Number(amount);
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// }
|
return amount;
|
}
|
|
// 拆分(大于0小于1的数) 小数部分 0 与 非0
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const splitZero = (item) => {
|
let zero, nonZero;
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if(scienceNum(item).includes('.') && scienceNum(item).split('.')[0] == 0){
|
|
const str = scienceNum(item).split('.')[1]
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const len = str.length
|
let num = 0
|
|
for(let i=0; i<len; i++){
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if(str[i] > 0) break;
|
num = i+1;
|
}
|
|
zero = str.substring(0,num);
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nonZero = str.substr(num);
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return { zero:zero, nonZero:nonZero}
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} else {
|
return false
|
}
|
}
|
|
// 拆分非整数的 小数部分 与 整数部分
|
const splitIntDec = (item) => {
|
let integer, decimal;
|
if(scienceNum(item).includes('.')){
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integer = scienceNum(item).split('.')[0];
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decimal = scienceNum(item).split('.')[1];
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return { integer:integer, decimal:decimal}
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} else {
|
return { integer:item || 0, decimal:0}
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}
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}
|
//
|
const disabledFn = (num,min,max,reta)=>{
|
if(max && num>max){
|
return true
|
}
|
if(min && num<min) {
|
return true
|
}
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if(reta && num%reta>0){
|
return true
|
}
|
return false
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}
|
//get方法url拼接
|
const paramsFn = (obj)=>{
|
let params = ''
|
for (let it in obj) {
|
params += it + '=' + obj[it] + '&'
|
}
|
return params.substring(0,params.length-1)
|
}
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const fixedTo = (num, fixed) => {
|
//保留整数位
|
if (fixed == -1 && num.indexOf('.')) {
|
return ((num + '').split('.')[0])
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}
|
|
let price = num
|
let maxLength = price.indexOf('.');
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let reg = "/^(\d?)+(\.\d{0,2})?$/"
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let reg2 = "/\.{2,}/g"
|
if (fixed) {
|
reg = reg.replace("2", fixed)
|
reg2 = reg2.replace("2", fixed)
|
}
|
if (price.indexOf(".") < 0 && price != "") {
|
price = parseFloat(price);
|
} else if (price.indexOf(".") == 0) {
|
//'首位小数点情况'
|
price = price.replace(/[^$#$]/g, "0.");
|
price = price.replace(eval(reg2), ".");
|
|
} else if (!(eval(reg).test(price))) {
|
//去掉最后一位
|
// price = price.substring(0, price.length - 1)
|
fixed = fixed ? fixed : 2
|
if (price.split('.')[1].length > fixed) {
|
price = (1 * price).toFixed(fixed)
|
}
|
|
}
|
return price
|
}
|
|
const uuid = () => {
|
let date = new Date();
|
let y = date.getFullYear();
|
let m = date.getMonth() + 1;
|
m = m < 10 ? ('0' + m) : m;
|
let d = date.getDate();
|
d = d < 10 ? ('0' + d) : d;
|
let h = date.getHours();
|
h = h < 10 ? ('0' + h) : h;
|
let minute = date.getMinutes();
|
let second = date.getSeconds();
|
let millsecond = date.getMilliseconds();
|
minute = minute < 10 ? ('0' + minute) : minute;
|
second = second < 10 ? ('0' + second) : second;
|
|
return y + '' + m + '' + d+''+h+''+minute+''+second + '' + millsecond + '' + Math.floor(Math.random()*1000000);
|
};
|
|
const timestampToTime=(timestamp,type)=> {
|
let date = new Date(timestamp);//时间戳为10位需*1000，时间戳为13位的话不需乘1000
|
|
let Y = date.getFullYear() + '-';
|
|
let M = (date.getMonth()+1 < 10 ? '0'+(date.getMonth()+1) : date.getMonth()+1) + '-';
|
|
let D = date.getDate() + ' ';
|
|
let h = date.getHours() + ':';
|
|
let m = date.getMinutes() + ':';
|
|
let s = date.getSeconds();
|
if(type==='yy-mm-dd'){
|
return Y+M+D
|
}else if(type==='mm-dd'){
|
return M+D
|
}else {
|
return Y+M+D+h+m+s;
|
|
}
|
|
|
}
|
|
const timeStr=(val,type)=>{
|
let date = new Date(val);//时间戳为10位需*1000，时间戳为13位的话不需乘1000
|
|
let Y = date.getFullYear() ;
|
let M = (date.getMonth()+1 < 10 ? '0'+(date.getMonth()+1) : date.getMonth()+1);
|
|
let D = date.getDate()<10 ? '0'+date.getDate() : date.getDate();
|
let linkLine = type ? '.' : '-';
|
if(type===2){
|
return Y + linkLine + M
|
}else{
|
return M+linkLine+D
|
}
|
}
|
|
function getDefault(value){
|
if(value === 0 || value === '0'){
|
return value;
|
}else {
|
return value || '-'
|
}
|
}
|
|
function formatter(value,m){
|
let date = new Date();//时间戳为10位需*1000，时间戳为13位的话不需乘1000
|
let h = date.getHours();
|
if(value){
|
return value
|
}else{
|
if(h>m){
|
return '-'
|
}else{
|
return ''
|
}
|
}
|
}
|
|
export default { thousands ,decimal,accMinus,accAdd,accDev,scienceNum,splitZero,splitIntDec,disabledFn,paramsFn,fixedTo,uuid,timestampToTime, getDefault,timeStr,accMul,formatter}
|
