/**
 * Created by chen on 2017/7/5.
 */

Number.prototype.toDecimal = function (ADigit) {
    return parseFloat(this.toFixed(ADigit));
};

var  number_util = {
    isNumber : function (obj) {
        return obj === +obj;
    },
    checkNumberValue: function (editingText, decimal) {
        let value;
        if (decimal) {
            value = Number(editingText);
            if (number_util.isNumber(value)) {
                value = value.toDecimal(decimal);
            } else {
                value = null;
                alert('当前输入的数据类型不正确，请重新输入。');
            }
        } else {
            value = editingText;
        }
        return value;
    }
}