jQuery方法扩展

<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8">
        <title></title>
          <script type="text/javascript" src="jquery@3.6.1/jquery.min.js"></script>
    </head>
    <body>
        <div class="active">测试封装jq插件</div>
        <script>
            $(function(){
                /* jquery扩展 */
                (function($) {
                  $.fn.extend({
                    /** 获取请求地址参数  */
                   getQueryString:function (name) {
                     var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)", "i");
                     var r = window.location.search.substr(1).match(reg);
                     if (r != null)
                     return unescape(r[2])
                     return null;
                     },
                     /** 判断当月总天数的函数 */
                    getDay: function (year, month) {
                         var days = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31];
                         //如果是润年
                         if (year % 4 == 0 && (year % 400 == 0 || year % 100 != 0)) {
                             days[1] == 29;
                         }
                         return days[month];
                     },
                     /* 计算两个日期间有几天*/
                     getDiffDate :function (dateString1, dateString2) {
                         var startDate = Date.parse(dateString1.replace('/-/g', '/'));
                         var endDate = Date.parse(dateString2.replace('/-/g', '/'));
                         var diffDate = (endDate - startDate) + 1 * 24 * 60 * 60 * 1000;
                         var days = diffDate / (1 * 24 * 60 * 60 * 1000);
                         //alert(diffDate/(1*24*60*60*1000));
                         return days;
                     },
                     /* 根据参数生成区间随机数*/
                    randombetween: function (min, max) {
                         return min + (Math.random() * (max - min + 1));
                     },
                     /**
                      * 文件下载
                      * 
                      * @param {String} url 下载的路径 
                      * @param {String} fileName 文件名称 带格式后缀
                      * 
                      */
                     download: function(url, fileName) {
                         const link = document.createElement("a");
                         link.href =baseUrl + url; //基础路径+后台返回文件地址
                         link.target = "_blank";
                         link.download = fileName;
                         link.style.display = "none";
                         document.body.append(link);
                         link.click();
                         document.body.removeChild(link);
                     };
                  });
                })(jQuery);
                 console.log($('.active').getDay(2025,8)); 
                 console.log($('.active').getDiffDate('2025-01-06','2025-06-26')); 
                 console.log($('.active').randombetween(10,100)); 
            })
            
        </script>
    </body>
</html>
jQuery方法扩展

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