<p id="demo">单击按钮显示月份</p>

<button onclick="myFunction()">点我</button>

<script>

function myFunction(){

    var d = new Date();

    var x = document.getElementById("demo");

    x.innerHTML=d.getMonth();

}

</script>

<p><strong>注意:</strong> 0=一月, 1=二月 ，类推</p>

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