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<head>

<meta http-equiv="Content-Type" content="text/html; charset=utf-8">

<title>无标题pj文档</title>

<script>

window.onload = function() {

	var oText=document.getElementById('text1');

	var oUl=document.getElementById('ul1');

	oText.onkeyup=function(ev)

	{

		ev=ev||event;

		if(oText.value!='')

		{

			if (ev.keyCode == 13) {

				var oLi = document.createElement('li');

				oLi.innerHTML = oText.value;

				if ( oUl.children[0] ) {

					oUl.insertBefore( oLi, oUl.children[0] );

				} else {

					oUl.appendChild( oLi );

				}

			}

		}

	}

};

</script>

</head>

<body>

	<input type="text" id="text1"/>

	<ul id="ul1" ></ul>

</body>

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