如何将字符串转换为嵌套数组中的数字？

问题描述：

我有以下数组中有一个数组在数组。这些值在字符串中，我希望它是一个数字。什么是是在JavaScript中执行此操作的最佳解决方案。如何将字符串转换为嵌套数组中的数字？

[ 
    { 
     "key": "America", 
     "values": [ 
      [ 
       "1469664000000", 
       "1" 
      ], 
      [ 
       "1469750400000", 
       "13" 
      ], 
      [ 
       "1469836800000", 
       "2" 
      ], 
      [ 
       "1469923200000", 
       "1" 
      ], 
      [ 
       "1470009600000", 
       "1" 
      ], 
      [ 
       "1470096000000", 
       "1" 
      ] 
     ] 
    }, 
    { 
     "key": "India", 
     "values": [ 
      [ 
       "1469750400000", 
       "1" 
      ] 
     ] 
    }, 
    { 
     "key": "China", 
     "values": [ 
      [ 
       "1469664000000", 
       "2" 
      ], 
      [ 
       "1469836800000", 
       "1" 
      ], 
      [ 
       "1470096000000", 
       "12" 
      ] 
     ] 
    }, 
    { 
     "key": "Africa", 
     "values": [ 
      [ 
       "1470096000000", 
       "1" 
      ] 
     ] 
    }, 
    { 
     "key": "UK", 
     "values": [ 
      [ 
       "1469664000000", 
       "3" 
      ], 
      [ 
       "1469750400000", 
       "3" 
      ], 
      [ 
       "1469836800000", 
       "1" 
      ], 
      [ 
       "1469923200000", 
       "2" 
      ], 
      [ 
       "1470009600000", 
       "4" 
      ], 
      [ 
       "1470096000000", 
       "2" 
      ] 
     ] 
    } 
]

迭代数组和'parseInt函数在（STR，10） '每个数字。 –

答

var data = [{"key":"America","values":[["1469664000000","1"],["1469750400000","13"],["1469836800000","2"],["1469923200000","1"],["1470009600000","1"],["1470096000000","1"]]},{"key":"India","values":[["1469750400000","1"]]},{"key":"China","values":[["1469664000000","2"],["1469836800000","1"],["1470096000000","12"]]},{"key":"Africa","values":[["1470096000000","1"]]},{"key":"UK","values":[["1469664000000","3"],["1469750400000","3"],["1469836800000","1"],["1469923200000","2"],["1470009600000","4"],["1470096000000","2"]]}]; 
 

 
data.forEach(function (o) { 
 
    o.values.forEach(function (values) { 
 
    values.forEach(function (value, i) { 
 
     values[i] = parseInt(value, 10); 
 
    }); 
 
    }); 
 
}); 
 

 
console.log(JSON.stringify(data, null, 4));

parseInt without radix？:) – naveen

'parseInt（value，10）' –

@naveen Thanks，fixed ！ – smarx

答

您可以使用JSON.parse（你的JSON对象或可能使用两个forEachs

我不认为你知道'JSON.parse'的作用。 *“每个人使用两个”*是广泛的，并没有真正回答任何问题。 –

答

var data = [{"key":"America","values":[["1469664000000","1"],["1469750400000","13"],["1469836800000","2"],["1469923200000","1"],["1470009600000","1"],["1470096000000","1"]]},{"key":"India","values":[["1469750400000","1"]]},{"key":"China","values":[["1469664000000","2"],["1469836800000","1"],["1470096000000","12"]]},{"key":"Africa","values":[["1470096000000","1"]]},{"key":"UK","values":[["1469664000000","3"],["1469750400000","3"],["1469836800000","1"],["1469923200000","2"],["1470009600000","4"],["1470096000000","2"]]}]; 

data = data.map(function(t){ 
    var newVals = t.values.map(function(vs){ 
     return vs.map(function(v){ 
     return parseInt(v, 10); 
    }); 
    }); 
    return {'key': t.key, values: newVals}; 
}); 
console.log(JSON.stringify(data));

如何将字符串转换为嵌套数组中的数字？

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