js 鼠标放上选中

<!DOCTYPE html>
<html>
<head>
    <title></title>
</head>
<script src="https://code.jquery.com/jquery-3.4.1.min.js" type="text/javascript" charset="utf-8"></script>
<body>
    <div class='xz'>
        ssssssssssssssssssssssssss
        ssssssssssssssssssssssssss
        <div>
            dddddddddddddddd
        </div>
    </div>
</body>
<script>
    $(document).ready(function(){
    $(".xz").hover(function(){
        this.focus();
        if(window.getSelection){
            var range=document.createRange();
            range.selectNodeContents(this);
            var selection = window.getSelection();
            selection.removeAllRanges();
            selection.addRange(range)            
            }
        else if(document.selection){
            //for ie
            var range=document.body.createTextRange()
            range.moveToElementText(this)
            range.select();
        }
    },function(){
        if(window.getSelection){
            var range=document.createRange();
            range.selectNodeContents(this);
            var selection = window.getSelection();
            selection.removeAllRanges();
        } else if(document.selection){
            //for ie
            var range=document.body.createTextRange()
            range.moveToElementText(none)
        }
    });
});
</script>
</html>
原文地址:https://www.cnblogs.com/chengfengchi/p/11360394.html