javascript increment name of variable

You can access object properties using operator []:

for(var i=0; i<array.length; i++)
{
    var item = array[i];
    var homePropertyName = 'home' + (i+1);
    //now you can access homeX property of item using item[homePropertyName]
    //e.g. item[homePropertyName] = data[index][homePropertyName]
}

Maybe you should use a little different structure which might fit your needs better, like this:

array = [
    0: array [
        "home": "Text for home",
        "away": "Text for away"
    ],

    1: array [
        "home": "",
        "away": ""
    ]
    // More sub-arrays here
];

You can also initialize it with a for loop:

var array = new Array();
var i;
for (i = 0; i < 4; i++) {
    array[i] = [
         "home": "",
         "away": ""
    ];
}

Or like this:

array[0]["home"] = "Text for home";
array[0]["away"] = "Text for away";

You can use this structure for the data-array also, and then use a for-loop to go through them both (like if you wish to find an element):

var result = NULL;
for (i = 0; i < array.length; i++) {
    if (    (array[i]["home"] == data[index]["home"]) &&
            (array[i]["away"] == data[index]["away"])
    ) {
        // Found matching home and away
        result = array[i];
        break;
    }
}
if (result != NULL) {
    alert("Found match: " + result["home"] + " - " + result["away"]);
}
else {
    alert("No match");
}

PS: Code is not tested, let me know if something is wrong.

you can access global properties in browser via window object like this (fiddle):

value1 = "ONE";

alert( window['value'+1] );

But it is not good design. You should look into how to properly format JSON object.

I have something like this:

for(var i=0; i<2; i++)

{

    var item = ARR[i];

    for(var x=0;x<5;x++){

    var hPropertyName = 'home_p' + (x+1);

    var aPropertyName = 'away_p' + (x+1);

     item[hPropertyName] = ARR[i][hPropertyName];    

      item[aPropertyName] = ARR[i][aPropertyName];

}

and it works when i create an array:

 var ARR = [

        {

            home_p1: 4,

            away_p1: 5,

            home_p2: 8,

            away_p2: 9,

            home_p3: 2,

            away_p3: 1,

            home_p4: 5,

            away_p4: 3,

            home_p5: 3,

            away_p5: 2

        },

        {

             home_p1: 6,

            away_p1: 1,

            home_p2: 1,

            away_p2: 2,

            home_p3: 3,

            away_p3: 4,

            home_p4: 5,

            away_p4: 6,

            home_p5: 3,

            away_p5: 2

        }

    ];

but I don't have to create an array, because i have to work on object which I get from database :

[Object { event_id=19328, home_result=3, away_result=2, home_p1=4, away_p1=3, home_p2=1, away_p2=2 ...... }]

I'm only interested in these parameters --> home_p , away_p I want to push it to my array to looks like ARR. I think i should convert an object which I get to an array

If you are using string name for your attributes then you could try using template literals?

var someObject = {}

for(let i=0 ; i<values.length ; i++){
    someObject[`home${i+1}`] = values[i];
} 

and if you need it to be ES5 you could just use string concatenation. Below is a working example:

values = [1,2,3,4,5];

let someObject = {};

for(let i=0 ; i<values.length ; i++){
    someObject[`value${i+1}`]=values[i];
}

console.log(someObject.value1);
console.log(someObject.value2);
console.log(someObject.value3);
console.log(someObject.value4);
console.log(someObject.value5);