Restricting the number of items allowed in an ajax request

Question

Restricting the number of items allowed in an ajax request

I need to retrieve information from a json file in order to populate a table. I only want to request a maximum of 5 items.

jQuery.getJSON("data/data.json", function(data) {
    var table = $("table");
    $.each(data, function(id, elem) {
        table.append("<tr class='text-center'><td>" + elem.dato1 + "</td><td>" + elem.dato2 + "</td></tr>");
    });
})

Alternatively, I could include a boolean key "active" in the data and filter out only the items with the value set to true. How can I implement this feature?

javascript ajax limit

Answer 1

Answer №1

To trim the original array to only include the initial 5 items, you can employ the function .slice().

data = data.slice(0, 5);

Answer 2

To trim the original array to only include the initial 5 items, you can employ the function .slice().

data = data.slice(0, 5);

Answer 3

Answer №2

Implement a basic for loop to achieve the desired result.

let data, maxLength;
maxLength = 6; // You can adjust this limit as needed
data = JSON.parse(json_info);
for(let index = 0; index < maxLength; index++) {
  let item = data[index];
  table.insert(item); // Add your custom logic here
}

Answer 4

Implement a basic for loop to achieve the desired result.

let data, maxLength;
maxLength = 6; // You can adjust this limit as needed
data = JSON.parse(json_info);
for(let index = 0; index < maxLength; index++) {
  let item = data[index];
  table.insert(item); // Add your custom logic here
}

Answer 5

Answer №3

To enforce a limit, the most effective approach is to apply it on your own controller where data retrieval occurs.

However, if you are unable to access or prefer not to make changes there, you can easily achieve this using JavaScript:

var limit = 5; //your custom limit
for(var i in data){
    if(i > limit) break;        
    var elem = data[i];
    table.append("<tr class='text-center'><td>" + elem.dato1 + "</td><td>" + elem.dato2 + "</td></tr>");
}

Answer 6

To enforce a limit, the most effective approach is to apply it on your own controller where data retrieval occurs.

However, if you are unable to access or prefer not to make changes there, you can easily achieve this using JavaScript:

var limit = 5; //your custom limit
for(var i in data){
    if(i > limit) break;        
    var elem = data[i];
    table.append("<tr class='text-center'><td>" + elem.dato1 + "</td><td>" + elem.dato2 + "</td></tr>");
}

Restricting the number of items allowed in an ajax request

Answer №1

Answer №2

Answer №3

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