<button id="button">有人想加你为好友</button>
<p id="text"></p>
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                var notification = new Notification("你好:",{
                    body:"请问今晚有空吗",
                    icon:"http://image.zhangxinxu.COM/左边头像地址"
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                    txt.innerHTML = new Date().toTimeString().splIT(" ")[0]+"收到信息";
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