Question

以下是二维数组，我只需要打印它，但当我在其中循环时，我得到[object object]或undefined

const myarra = function(){
    return [
        [
          { "dayOfMonth" : 1, "dayOfWeek" : "Fri", "event" : "" },
          { "dayOfMonth" : 2, "dayOfWeek" : "Sat", "event" : "" }
        ]
    ];
};

Answer 1

这样您就可以跟踪数组中的每个元素。

如果您只想使用JSON.stringify(arrayVariable)此代码打印该数组，也可以使用console.log(JSON.stringify(arrayVariable))方法。

＆＃13;

 function myfunction(){
   var array=[[{"dayOfMonth":1,"dayOfWeek":"Fri","event":""},
         {"dayOfMonth":2,"dayOfWeek":"Sat","event":""}]];
    
    for(var i=0;i<array.length;i++){
     for(var j=0;j<array[i].length;j++){
    console.log(array[i][j]);
     }
    }
 };
  
  myfunction();

＆＃13;

Answer 2

您可以使用JSON.stringify()

const myarra = function(){
  return [[{"dayOfMonth":1,"dayOfWeek":"Fri","event":""},
         {"dayOfMonth":2,"dayOfWeek":"Sat","event":""}]];
  };

JSON.stringify(myarra())

Answer 3

因为它首先创建此数组然后写入

"[[{"dayOfMonth":1,"dayOfWeek":"Fri","event":""},
     {"dayOfMonth":2,"dayOfWeek":"Sat","event":""}]];"

不使用javascript打印二维数组

3 个答案: