[js]純css強制不換行

要加在li上html
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        div {
            width: 100px;
            height: 200px;
            border: 1px solid red;
            padding: 20px;
            line-height: 30px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        ul li {
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
    </style>
</head>
<body>
<div>
    <ul id="ul1">
        <li>1, test1</li>
        <li>2, test2</li>
        <li>3, test3</li>
    </ul>
</div>

<script src="data.js"></script>
<script>
    //


    var oUl = document.getElementById('ul1');
    var OLis = document.getElementsByTagName('li');
    for (var i = 0; i < OLis.length; i++) {
        OLis[i].onmouseover = function () {
            this.style.backgroundColor = "pink";
        };
        OLis[i].onmouseout = function () {
            this.style.backgroundColor = '';
        };
    }

    var oFrm = document.createDocumentFragment();

    for (var i = 0; i < arr.length; i++) {
        var oLi = document.createElement('li');
        oLi.innerHTML = '<li>' + arr[i].title + '----' + arr[i].desc + '</li>';
        oFrm.appendChild(oLi);
    }

    oUl.appendChild(oFrm);
</script>
</body>
</html>