Anisha Vanga

by Matthew Vasallo

HTML

<ul id="theList">
    <li>6</li>
    <li>3</li>
    <li>1</li>
    <li>4</li>
    <li>7</li>
    <li>4</li>
    <li>2</li>
    <li>8</li>
    <li>9</li>
    <li>2</li>
</ul>

JavaScript

var arr =[];
$('li').each(function(){
    arr.push($(this).text());
});

function test(){
    var outerVar = 'outer';
    //alert(myVar);
    function testAgain(){
        var myVar = "hello";
        //alert(outerVar);
    }
}
test();
function find_duplicate(arr) {
 var len =arr.length,
     out = [],
     counts= {};
    
    for (var i=0;i<len;i++){
        
        var item =arr[i];
        
        var count = counts[item];
        counts[item]= counts[item]>=1 ?counts[item]+1 :1;
        if(counts[item]>1)
        { 
            alert('found duplicate = ' +item);
            break;
        }
    }
    return out;
} 

find_duplicate(arr);