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I have a requirement to check for duplicate documents in the document library. How can i implement this using jquery. Please share the code.

share|improve this question
why would you do that? what is duplicate document? Did you read the How to Ask page? Did you visit ? – Steve B Jul 3 '12 at 13:35
i have a requirement where in i was uploading a document into a doc lib using custom code. So whenever i do that i wanted to check if the user is uploading a unique doc. – AJ Mania Jul 4 '12 at 19:56
Unique in what way? Filename? Contents (I suppose creating a hash and comparing it to the hash of files in the library)? – shufler Jul 4 '12 at 20:55

Code to check if the document exists in the doc lib using jquery

function findDocument(fileName, docLibName) {
        var optValue = "0";
        var query = "<Query><Where><Eq><FieldRef Name='FileLeafRef' /><Value Type='File'>" + fileName + "</Value></Eq></Where></Query>";

            operation: "GetListItems",
            listName: docLibName,
            CAMLViewFields: "<ViewFields><FieldRef Name='ID' /></ViewFields>",
            CAMLQuery: query,
            async: false,

            completefunc: function (xData, Status) {
                    optValue = $(xData.responseXML).SPFilterNode("rs:data").attr("ItemCount");
        return optValue;
share|improve this answer
You'll need to fix the formatting of your answer as right now it looks like this returns the number of documents in a library because you're missing a some spaces in the markdown. (When I edit the post I see you're performing a query based on a supplied file name, and I can't save my edit of four spaces). – shufler Jul 4 '12 at 20:56
yes, i am returning the count. So i check that if the count is more than 0, that implies that the document exists. – AJ Mania Jul 5 '12 at 10:21

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