js-wrench/modules/format.ts

JS函数库

import includes from './includes';
/**
 * @description 格式化类
 *
 * @class Format
 */
class Format {

    private static $instance: Format
	constructor() {}
	/**
	 * @description 获取实例
	 *
	 * @static
	 * @return {*}
	 * @memberof CheckRegExp
	 */
	public static getInstance() {
		if (!this.$instance) this.$instance = new Format()

		return this.$instance
    }
    /**
     * @description 简单的日期格式化 
     *
     * @param {Date} date Data 日期
     * @param {string} [format="-"] string 默认-
     * @return {*}  {string} 返回格式化后的日期
     * @example date(new Date()) => 2019-6-12 13:43:23
     * @memberof Format
     */
    public date(date: Date, format: string = "-"): string {
        let year: number | string = date.getFullYear();
        let month: number | string = date.getMonth() + 1;
        let day: number | string = date.getDate();
        let hour: number | string = date.getHours();
        let minute: number | string = date.getMinutes();
        let second: number | string = date.getSeconds();
        month = month < 10 ? ('0' + month) : month;
        day = day < 10 ? ('0' + day) : day;
        hour = hour < 10 ? ('0' + hour) : hour;
        minute = minute < 10 ? ('0' + minute) : minute;
        second = second < 10 ? ('0' + second) : second;
        return year + format + month + format + day + ' ' + hour + ':' + minute + ':' + second;
    }

    /**
     * @description 对金额进行千位分隔
     *
     * @param {string} str 需要格式化的金额
     * @param {number} [radix] 如果有小数位 保留[radix]位数
     * @return {*}  {string} 返回格式化后的金额
     * @example money("1223547.68") => 1,223,547.68
     * @memberof Format
     */
    public money(str:string, radix?:number): string {
        let reg:RegExp = /\d{1,3}(?=(\d{3})+$)/g;
        let split:string[] = String(str).split(".");
        let newStr:string = split[0].replace(reg, "$&,");
        let digits:string = split[1] || "";
        digits = digits.slice(0, radix ? radix: digits.length);
        digits = digits ? "." +  digits : "";
        return `${newStr}${digits}`
    }
}


const format:Format = Format.getInstance()
export default format