无法迭代jQuery中的键/值数组

Question

I have an array in the following form:

[
   849D7F716C80E6FBA1B6C984AC671CFA6BA19BEF: Array[7],
   13C29365E98124E760AE090047358D2C76C82D4C: Array[7],
   1165565F4A1EDB8DD07E617D56F73BF81F9CB184: Array[7], 
   F12A4A88F71EC50751D3E11F4AA331699CDED76: Array[8]
]

The sub arrays are objects:

3F12A4A88F71EC50751D3E11F4AA331699CDED76: Array[8] >
  0: Object
  1: Object
  2: Object
  3: Object
  4: Object
  5: Object
  6: Object
  7: Object

I can see it on my console using

console.log(arr);

But if I do this:

$.each(arr, function (key, value)
{
    console.log(key);
    console.log(value);
});

Nothing happens. Why?! It should print something like this:

> 849D7F716C80E6FBA1B6C984AC671CFA6BA19BEF
> Array[7]
> 13C29365E98124E760AE090047358D2C76C82D4C
> Array[7]
> 1165565F4A1EDB8DD07E617D56F73BF81F9CB184
> Array[7]
> F12A4A88F71EC50751D3E11F4AA331699CDED76
> Array[8]

Answer 1

This:

[
   849D7F716C80E6FBA1B6C984AC671CFA6BA19BEF: Array[7],
   13C29365E98124E760AE090047358D2C76C82D4C: Array[7],
   1165565F4A1EDB8DD07E617D56F73BF81F9CB184: Array[7], 
   F12A4A88F71EC50751D3E11F4AA331699CDED76: Array[8]
]

Is not a valid syntax for array initialisation. Array elements do not have key/values they just have values - perhaps you meant to create an object literal:

{
   849D7F716C80E6FBA1B6C984AC671CFA6BA19BEF: Array[7],
   13C29365E98124E760AE090047358D2C76C82D4C: Array[7],
   1165565F4A1EDB8DD07E617D56F73BF81F9CB184: Array[7], 
   F12A4A88F71EC50751D3E11F4AA331699CDED76: Array[8]
}

Once you do it that way, your code works fine: https://jsfiddle.net/veky1dk5/

Answer 2

make it as json array and then use each like

[ {  '849D7F716C80E6FBA1B6C984AC671CFA6BA19BEF': Array[7],


'13C29365E98124E760AE090047358D2C76C82D4C': Array[7],


'1165565F4A1EDB8DD07E617D56F73BF81F9CB184': Array[7], 


'F12A4A88F71EC50751D3E11F4AA331699CDED76': Array[8] }] 

Answer 3

Why are you using a and b in console. Use key and value in printing console:

$.each(arr, function (key, value)
{
    console.log(key);
    console.log(value);
});