//1：依据id //var element = document.getElementById("test"); console.log(element); //2:依据class var elements = document.getElementsByClassName("clazz"); for(var index in elements){ //console.log(elements[index]); } //3：依据name var elements = document.getElementsByName("hobby"); for(var index in elements){ console.log(elements[index]); } //4：依据标签名字 var elements = document.getElementsByTagName("input"); for(var index in elements){ console.log(elements[index]); }
script在上面定义的方法
<script> function test(){ var elements = document.getElementsByTagName("input"); for(var index in elements){ console.log(elements[index]); } } </script> </head> <body onload="test()"> <input name="hobby" type="checkbox" value="0" />0 <input name="hobby" type="checkbox" value="1" />1 <input name="hobby" type="checkbox" value="2" />2 <input name="hobby" type="checkbox" value="3" />3 </body>