Question

-1

Create a file using Javascript in Chrome on client side

rated 0 times [ 4] [ 5] / answers: 1 / hits: 65190 / 13 Years ago, tue, august 23, 2011, 12:00:00

I would like to know if I can create a text file and save the file in the users Downloads section in his/her computer using Javascript. The way my feature should work is when the user clicks the submit button, I populate the users info in the text file and then save it in his machine. I would like this to work in Google Chrome.

Is this possible? I have seen posts that specifically tell me that it is a serious security issue.

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deonkalvinw

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answered 13 Years ago gabriellagiselc · Accepted Answer

Sure you can, using the brand new APIs.

 window.requestFileSystem = window.requestFileSystem || window.webkitRequestFileSystem;



 window.requestFileSystem(window.TEMPORARY, 1024*1024, function(fs) {

    fs.root.getFile('test.bin', {create: true}, function(fileEntry) { // test.bin is filename

        fileEntry.createWriter(function(fileWriter) {

            var arr = new Uint8Array(3); // data length



            arr[0] = 97; // byte data; these are codes for 'abc'

            arr[1] = 98;

            arr[2] = 99;



            var blob = new Blob([arr]);



            fileWriter.addEventListener(writeend, function() {

                // navigate to file, will download

                location.href = fileEntry.toURL();

            }, false);



            fileWriter.write(blob);

        }, function() {});

    }, function() {});

}, function() {});