显示省略号，鼠标移动到标题上面，显示全部标题的实现方式

 

<div class='requirement_css' onmouseover="overShow(this,event)" onmouseout="outHide()">
        <span class="m-l" ng-bind="item.name |cut:true:60:'...'">Task title</span>
    </div>
    <script>
        function overShow(obj, e) {
            var showDiv = document.getElementById('showDiv');
            var theEvent = e ? e : window.event;
            showDiv.style.left = theEvent.clientX + document.body.scrollLeft - 5 + "px";
            showDiv.style.top = theEvent.clientY + document.body.scrollTop - 50 + "px";
            showDiv.style.display = 'block';
            showDiv.innerHTML = obj.innerHTML;
        }
        function outHide() {
            var showDiv = document.getElementById('showDiv');
            showDiv.style.display = 'none';
            showDiv.innerHTML = '';
        }
    </script>
    <div id="showDiv"
         style=" position:absolute;width: auto;height:40px;font-size:16px;background-color:#f1f4f5;display: none "></div>
</accordion-heading>