表单数据提交URL的查询参数

export function myStringify(obj) {
        let result = "";
        for (const key in obj) {
          if (obj.hasOwnProperty(key)) {
            result += `${encodeURIComponent(key)}=${encodeURIComponent(obj[key])}&`;
          }
        }
     return result.slice(0, -1);
 }

 const obj = {
        name: "zhangsan",
        age: 18,
        sex: "boy"
      }; 
 console.log(myStringify(obj)) //  name=zhangsan&age=18&sex=boy