jQuery

[jQuery][사용자함수] $.fn.higherLayer - 확장집합에서 z-index가 가장 높은 요소 선택

힘없는염소 2015. 1. 6. 14:28
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<!DOCTYPE html>
<html lang="ko">
<head>
<meta charset="utf-8">
<style>
    .box {
        width:40px;
        height:40px;
    }
</style>
<script src="js/jquery.js"></script>
</head>
<body>
    <div class="box" style="position: absolute; top:50px; left:50px; z-index: 2; background: red"></div>
    <div class="box" style="position: absolute; top:150px; left:350px; z-index: 4; background: green" ></div>
    <div class="box" style="position: absolute; top:330px; left:450px; z-index: 50; background: #000"></div>
    <div class="box" style="position: absolute; top:230px; left:150px; z-index: 15; background: pink"></div>
    <div class="box" style="position: absolute; top:150px; left:250px; z-index: 4; background: blue"></div>
    <div class="box" style="position: absolute; top:550px; left:450px; z-index: 1; background: skyblue"></div>
    <div class="box" style="position: absolute; top:350px; left:220px; z-index: 3; background: orange"></div>
    <script>
        
        //확장집합에서 가장 z-index가 가장 높은 요소 선택....jquery 메서드를 만듬
        $.fn.higherLayer = function () {
        
            var sortZindex = $(this).sort(function (a, b) {
                return parseInt(a.style.zIndex) - parseInt(b.style.zIndex);
            });
            
            console.log(sortZindex[0]);
            console.log(sortZindex[1]);
            console.log(sortZindex[2]);
            console.log(sortZindex[3]);
            console.log(sortZindex[4]);
            console.log(sortZindex[5]);
            console.log(sortZindex[6]);
        
            //z-index를 기준으로 정렬된 마지막요소(z-index가 가장높은 요소) 반환
            return sortZindex.last();
        };
            
        console.log($('.box').higherLayer());
            
    </script>
</body>
</html>


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