<a href="javascript:;" onclick="showCurrUser()">点击显示当前用户</a>
<p id="currUser"></p>
<style>
p { margin: 5px 16px; }
a {
    display: block;
    padding: 5px 16px;
    color: #108ee9;
    text-decoration: underline;
}
</style>
<script>
function showCurrUser() {
    var currUser = Mobile_NS.getCurrUser();

    document.getElementById("currUser").innerHTML = "当前用户为: " + currUser;
}
</script>