js案例：数组转换为分割字符串

要求：将数组['red','green','blue','pink']转换字符串，并用|或其他符号分割

输出：'red'|'green'|'blue'|'pink|'

---

var arr = ["red", "green", "blue", "pink"];
      var str = "";
      for (var i = 0; i < arr.length; i++) {
        //+隐式转换
        //arr[i]———数组元素；i----下标
        str = str + arr[i] + "|";
      }
      console.log(str);

var arr = ["red", "green", "blue", "pink"];

      var str = "";

      for (var i = 0; i < arr.length; i++) {

        //+隐式转换

        //arr[i]———数组元素；i----下标

        str = str + arr[i] + "|";

      }

      console.log(str);

}