When using AJAX to load content into a webpage, does the browser request the external file after receiving the initial content, or does it preload all included files at once?

When using AJAX to load content into a webpage, the browser requests the external file after receiving the initial content. This means that the browser will only load the additional files when they are requested by the AJAX call, rather than preloading all included files at once. This can help improve page load times and reduce unnecessary resource usage. 

// Example AJAX call to load content into a webpage
$.ajax({
    url: 'external_file.php',
    type: 'GET',
    success: function(response) {
        // Handle the response and insert the content into the webpage
        $('#content').html(response);
    },
    error: function() {
        // Handle any errors that occur during the AJAX call
        console.log('Error loading content');
    }
});

Keywords

AJAX webpage browser request external file preload

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