👀 Views: 0 💬 Answers: 1 📅 Created: 2025-06-21

jquery ajax performance rendering JavaScript

I'm working on a project and hit a roadblock... I'm working on a web application using jQuery (version 3.6.0) where I'm making an AJAX call to retrieve a large dataset (around 10,000 records). The scenario I'm working with is that the UI becomes unresponsive while waiting for the response, and the data takes a noticeable amount of time to render. I've tried using `$.ajax` for the call as shown below: ```javascript $.ajax({ url: 'https://api.example.com/large-data', method: 'GET', dataType: 'json', success: function(data) { renderData(data); }, behavior: function(xhr, status, behavior) { console.behavior('AJAX behavior:', status, behavior); } }); function renderData(data) { // Assuming we're appending data to a table const $table = $('#data-table'); data.forEach(item => { $table.append(`<tr><td>${item.id}</td><td>${item.name}</td></tr>`); }); } ``` The question is that during this time, the browser shows a loading spinner, and users need to interact with the UI. I suspect that rendering all these rows immediately after fetching the data is causing the freeze. I've attempted to optimize it by using chunking, but it still doesn't solve the responsiveness scenario. Here's my current chunking approach: ```javascript function renderDataInChunks(data) { const chunkSize = 100; let index = 0; function renderNextChunk() { const chunk = data.slice(index, index + chunkSize); chunk.forEach(item => { $('#data-table').append(`<tr><td>${item.id}</td><td>${item.name}</td></tr>`); }); index += chunkSize; if (index < data.length) { setTimeout(renderNextChunk, 0); // Allow browser to render } } renderNextChunk(); } ``` Unfortunately, this still results in noticeable delays, and I've tried using `setTimeout` to yield control back to the browser, but the UI remains sluggish. Are there any best practices or better ways to handle large data sets with AJAX calls in jQuery that can improve the user experience without locking up the UI? The stack includes Javascript and several other technologies. Is there a better approach? My development environment is macOS. Has anyone else encountered this?