前端get请求url拼接多项参数方法

  var toString = "";

  for (var key in data) {

      if(!data[key]){

        delete data.key

      }else{

        var obj = data[key];

        if (Array.isArray(obj)) {

            var arrayString = obj.join(",");

            toString += key + "=" + arrayString + "&";

        } else {

            toString += key + "=" + data[key] + "&";

        }

      }

  }

 toString.substring(0, toString.length - 1).replace(/$/, "");