Jquery JavaScript create dynamic 2 dimensional array

Question

Hi I see there are loads of examples but none explains what I need done.

I want to create and add items to a 2 Dimensional array and sort dynamically.

Some code I have been messing around with:

var Amount = new Array(new Array()); //MULTI ARRAY
var a = 0; //COUNTER
$("input[id^='AmountSpent']").each(function(){
 Amount[a][a] = [a, $(this).val()]; //THIS IS WHERE I GET STUCK... HOW TO ASSIGN VALUES
 a = a + 1;
});

After that I want to sort the array.

So if the array looks like this:

Amount = [[1,2,3,4],[200,ドル300,ドル100,ドル600ドル]]

I want to sort highest amount first: 600,ドル 300,ドル 200,ドル 100ドル

Can anyone please help me.

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U P D A T E

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Using the code i got from Rory(Thanks a lot) I am doing the following:

var amounts = []; 
$("input[id^='AmountSpent']").each(function(i, el){
 amounts.push({ index: i + 1, value: $(el).val() });
});
amounts.sort(function(a, b) {
 if(a.value < b.value) return 1;
 if(a.value > b.value) return -1;
 return 0;
});

To loop through the array I am doing :

for (ii = 0; ii < amounts.length; ++ii) {
console.log(amounts[ii].index + " - " + amounts[ii]); // 
 }

The Result I get is :

1 - [object object]
2 - [object object]
3 - [object object]

• adamb: If there a specific reason that you need it to be a 2 dimensional array? Why not an array of objects which contains both sets of information?
• Nev: What I need to do is I have a value say a = 900ドル In the array I want to have the sum of the highest values that make up 900ドル so basically I want to get the indexes/id's [4,3] to use for another calculation.

Answer 1

A multidimensional array is probably overkill for this. Personally I'd use an array of objects - assuming you need to store the index at all.

var amounts = []; 
$(".foo").each(function(i, el){
 amounts.push({ index: i + 1, value: $(el).val() });
});
amounts.sort(function(a, b) {
 if(a.value < b.value) return 1;
 if(a.value > b.value) return -1;
 return 0;
});

Example fiddle

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Update

Your loop code doesn't access the value property, try this:

for (ii = 0; ii < amounts.length; ++ii) {
 console.log(amounts[ii].index + " - " + amounts[ii].value);
}

• Nev: THANKS Gonna try it now! You are probably right about the overkill but I am not a hardcore programmer, just came across this problem in a small project I am doing. What I need to do is I have a value say a = 900ドル In the array I want to have the sum of the highest values that make up 900ドル so basically I want to get the indexes/id's [4,3] to use for another calculation.
• Nev: When I want to loop through array i get a [object object] error @RoryMcCrossan
• Rory McCrossan: @Nev I've updated my answer to show you how to get the value from the loop