JS内置方法_javascript自带了多少方法-优快云博客

本文链接：https://blog.youkuaiyun.com/boxyuan/article/details/72628663

<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
		
	</head>
	<body>
		<input type="text" name="tname" value="小麦" />
		<br />
		<input type="text" name="tname" value="小米" />
		<br />
		<input type="text" name="tname" value="华为" />
		<br />
		<select name="province" id="provinceID" multiple size="3">
			<option value="bj">北京</option>
			<option value="sh">上海</option>
			<option value="gz">广州</option>
		</select>
		<p name="beijing" id="bj">北京</p>
		<script type="text/javascript">
			/*
			var tnameElement=document.getElementsByName("tname");
			var size=tnameElement.length;
			//alert("tnameElement");
			for(var i=0;i<size;i++)
			{
				 alert(tnameElement[i].value);
			}
			*/
			/*
			var selectElement=document.getElementsByTagName("select")[0];
			var size=selectElement.options.length;
			for(var i=0;i<size;i++)
			{
				var optionElement=selectElement.options[i];
				alert(optionElement.value+"  "+optionElement.innerHTML);
			}
			*/
			var pElement=document.getElementById("bj");
			var name=pELement.getAttribute("name");
			var id=pELement.getAttribute("id");
			alert(id+" :"+name);
		</script>
	</body>
</html>