combine two arrays into a single array

Question

combine two arrays into a single array

i am dealing with two different arrays. The first one is:

lineChart = [{type : 'line' , data : arrdata }] ;

The second array is:

mina = [{type : 'area' , data : [[1326844575000,10] ,[1326845955000,10]], color : 'H33FF00'},
        {type : 'area' , data : [[1326846575000,10] ,[1326848065000,10]], color : 'H33FF00'},
        {type : 'area' , data : [[1326848390000,10] ,[1326849755000,10]], color : 'H33FF00'} ];

When I push them together like this:

mychart.push(lineChart);
mychart.push(mina); 

console.log(JSON.stringify(mychart)) ;

This is the output I get:

[{"type":"line","data":[]},[{"type":"area","data":[[1326844575000,10],[1326845955000,10]],"color":"H33FF00"},{"type":"area","data":[[1326846575000,10],[1326848065000,10]],"color":"H33FF00"},{"type":"area","data":[[1326848390000,10],[1326849755000,10]],"color":"H33FF00"}]]

My question now is: How can I combine these arrays into one single array like this?

[{"type":"line","data":[]},{"type":"area","data":[[1326844575000,10],[1326845955000,10]],"color":"H33FF00"},{"type":"area","data":[[1326846575000,10],[1326848065000,10]],"color":"H33FF00"},{"type":"area","data":[[1326848390000,10],[1326849755000,10]],"color":"H33FF00"}]

javascript arrays

Answer 1

Answer №1

To add the first object to the array, simply push it in like this:

items.push(firstObject);

If you want the first item to be the first element in the array, you can use items.unshift(firstObject);

http://jsfiddle.net/E2WT8/

items = [{type : 'area' , data : [[1326844575000,10] ,[1326845955000,10]], color : 'H33FF00'},
        {type : 'area' , data : [[1326846575000,10] ,[1326848065000,10]], color : 'H33FF00'},
        {type : 'area' , data : [[1326848390000,10] ,[1326849755000,10]], color : 'H33FF00'} ];

firstObject = {type : 'line' , data : [] } ;

items.unshift(firstObject);

alert(JSON.stringify(items)) ;

Answer 2

To add the first object to the array, simply push it in like this:

items.push(firstObject);

If you want the first item to be the first element in the array, you can use items.unshift(firstObject);

http://jsfiddle.net/E2WT8/

items = [{type : 'area' , data : [[1326844575000,10] ,[1326845955000,10]], color : 'H33FF00'},
        {type : 'area' , data : [[1326846575000,10] ,[1326848065000,10]], color : 'H33FF00'},
        {type : 'area' , data : [[1326848390000,10] ,[1326849755000,10]], color : 'H33FF00'} ];

firstObject = {type : 'line' , data : [] } ;

items.unshift(firstObject);

alert(JSON.stringify(items)) ;

Answer 3

Answer №2

Initially, it's important to note that lineChart is not an array; rather, it is an object.

On the contrary, mina is indeed an array.

If you wish to include lineChart in the mina array, you can simply do so by using mina.push(lineChart);.

Alternatively, you could concatenate them using

var mychart = mina.concat([lineChart]);

An additional approach involves merging them together:

function mergeArrays(array1, array2) {
    var i, j, newArray = []; for(i=0,j=array1.length;i<j;++i) {
        newArray.push(array1[i]);
    }
    for(i=0,j=array2.length;i<j;++i) {
        newArray.push(array2[i]);
    }

    return newArray;
}

var mergedArray = mergeArrays(mina, [lineChart]);

For a live example, check out this JSfiddle: http://jsfiddle.net/4Zwkx/

Answer 4

Initially, it's important to note that lineChart is not an array; rather, it is an object.

On the contrary, mina is indeed an array.

If you wish to include lineChart in the mina array, you can simply do so by using mina.push(lineChart);.

Alternatively, you could concatenate them using

var mychart = mina.concat([lineChart]);

An additional approach involves merging them together:

function mergeArrays(array1, array2) {
    var i, j, newArray = []; for(i=0,j=array1.length;i<j;++i) {
        newArray.push(array1[i]);
    }
    for(i=0,j=array2.length;i<j;++i) {
        newArray.push(array2[i]);
    }

    return newArray;
}

var mergedArray = mergeArrays(mina, [lineChart]);

For a live example, check out this JSfiddle: http://jsfiddle.net/4Zwkx/

combine two arrays into a single array

Answer №1

Answer №2

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