yylib-quick-mobile/source/utils/MathUtils.js

yylib-quick-mobile

"use strict";

Object.defineProperty(exports, "__esModule", {
    value: true
});

var _uuid2 = require("uuid");

var _uuid3 = _interopRequireDefault(_uuid2);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

var MathUtils = {
    uuid: function uuid() {
        var uuidArr = _uuid3.default.v4().split("-");
        return uuidArr.join("");
    },

    scienceNum: function scienceNum(value) {
        if (!value) return value;
        if (typeof value === 'number') value = value + "";
        var minusStr = '';
        if (value.substring(0, 1) === '-') {
            minusStr = '-';
            value = value.substring(1, value.length);
        }
        var eIndex = value.indexOf('E');
        if (eIndex == -1) eIndex = value.indexOf('e');
        if (eIndex != -1) {
            var doubleStr = value.substring(0, eIndex);
            var eStr = value.substring(eIndex + 1, value.length);
            eStr = parseInt(eStr);
            var doubleStrList = doubleStr.split('.');
            var doubleStr1 = doubleStrList[0] || "";
            var doubleStr2 = doubleStrList[1] || "";

            if (eStr < 0) {
                var str1Len = doubleStr1.length;
                var eStrs = Math.abs(eStr);
                if (str1Len > eStrs) {
                    var nums = doubleStr1.substring(0, eStrs);
                    var nume = doubleStr1.substring(eStrs, str1Len);
                    doubleStr = nums + "." + nume + nume;
                } else if (str1Len < eStrs) {
                    var indexNum = eStrs - str1Len;
                    var str = _makeZero(indexNum);
                    doubleStr = '0.' + str + doubleStr1 + doubleStr2;
                } else {
                    doubleStr = '0.' + doubleStr1 + doubleStr2;
                }
            } else {
                var str2Len = doubleStr2.length;
                if (str2Len > eStr) {
                    var _nums = doubleStr2.substring(0, eStr);
                    var _nume = doubleStr2.substring(eStr, str2Len);
                    doubleStr = doubleStr1 + _nums + '.' + _nume;
                } else if (str2Len < eStr) {
                    var _indexNum = eStr - str2Len;
                    var _str = _makeZero(_indexNum);
                    doubleStr = doubleStr1 + doubleStr2 + _str;
                } else {
                    doubleStr = doubleStr1 + doubleStr2;
                }
            }
            value = doubleStr;
        }
        return minusStr + value;
    }
};

exports.default = MathUtils;