Jquery check if array contains duplicate string -


how check if array contains duplicate string , have validatearray = ['sa','sa','yu'] have used following function same not working me.

checkduplicate = function (reportrecipients) {     if (reportrecipients.length > 1) {         var recipientsarray = reportrecipients.tostring().split(',');         (a in recipientsarray) {             if(reportrecipients.indexof(a) != reportrecipients.lastindexof(a)){                 return true;                 break;             }         }     }     return false; }

this working me:

var reportrecipients = ['aaa', 'xyz', 'aaa', 'abc', 'xxx', 'xyz', 'pqr']; var recipientsarray = reportrecipients.sort();   var reportrecipientsduplicate = []; (var = 0; < recipientsarray.length - 1; i++) {     if (recipientsarray[i + 1] == recipientsarray[i]) {         reportrecipientsduplicate.push(recipientsarray[i]);     } }

hope helps.


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