console 命令行工具 X clear

console

window.onload = function () {

    var oBtn1 = document.getElementById("btn1");
    oBtn1.onclick = function() {
        alert("欢迎您！");
    }

    var oDivBtn = document.getElementById("divBtn");
    oDivBtn.onclick = function() {
        alert("我不是一个按钮");
    }

    var oPContent = document.getElementById("content");
    oPContent.onmouseover = function() {
        this.style.color="red";
    }
    oPContent.onmouseout = function() {
        this.style.color="black";
    }

    var oUpDownBtn = document.getElementById("updown");
    oUpDownBtn.onmousedown = function() {
        oPContent.style.color="blue";
    }
    oUpDownBtn.onmouseup = function() {
        oPContent.style.color="black";
    }
    oUpDownBtn.onmousemove = function() {
        this.style.color = "lightskyblue";
    }
    oUpDownBtn.onmouseout = function() {
        this.style.color="black";
    }

}

function alertMes() {
    alert("新华学院");
}

<!DOCTYPE html> 
<html>
    <head>
        <meta charset="utf-8" />
        <title></title>
        <style type="text/css">
            
        </style>
        <script>
        
        </script>
    </head>
    <body>
        <button id="btn" onclick="alertMes()">弹出信息</button>
        <br />
        <button id="btn1" >弹出欢迎信息</button>
        <br/>
        <div id="divBtn">点我</div>
        <br/>
        <br/>
        <div>
            <p id="content">广州新华学院</p>
            <button id="updown">按下松开</button>
        </div>
    </body>
    </body>
</html>

#divBtn {
    display: inline-block;
    width: 80px;
    height: 24px;
    line-height: 24px;
    font-family:微软雅黑;
    font-size:15px;
    text-align: center;
    border-radius: 3px;
    background-color: deepskyblue;
    color: White;
    cursor: pointer;
}