Question

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Javascript Memory Limit

I’m working on creating html page using client side javascript which will load around 150mb of XML data file on page load. When the file size was around 5 mb, it took 30 seconds to load whole data into an array. But when I changed file to 140 mb, the page is not responding in firefox and crashing abruptly in chrome. My snippet to load data will process on every individual tag in xml. My question is, is there any limited heap size for javascript? Any academic article resource is preferable to emphasize my research.

$(document).ready(function () {
        // Open the xml file
        $.get("xyz.xml", {}, function (xml) {
            // Run the function for each  in the XML file
             $('abc', xml).each(function (i) {
                a = $(this).find("a").text();
                b = $(this).find("b").text();
                c = $(this).find("c").text();
                ab = $(this).find("ab").text();
                bc = $(this).find("bc").text();
                cd = $(this).find("cd").text();
                de = $(this).find("de").text();
                // process data
              dosomething(a,b,c,ab,bc,cd,de);
                   }); }); });

Answer 1

I don’t know of any limits. I’ve been able to load even a 1Gb file. Yes, it was slow to load initially and everything ran slowly because most of the memory will be paged.

However, there are problems with trying to load a single JavaScript object that is that big, mostly because the parsers can’t parse an object that is too big. See Have I reached the limits of the size of objects JavaScript in my browser can handle?

For that case, the solution was to break up the creation of the JavaScript object into multiple stages rather than using a single literal statement.