用document.getElementsByTagName 遍历表单的控件组

参数checkBoxLikeName为你要like查询的checkbox的name,如“aaa”
function show(checkBoxLikeName){
		test = document.getElementsByTagName("INPUT");
		testValue="";
		for (i = 0; i < test.length ; i ++ )
		{
			if(test[i].type == "checkbox" && test[i].name.indexOf(checkBoxLikeName)!= -1 ){
				testValue +=test[i].value+",";
			}
		}
		testValue=testValue.substring(0,testValue.length-1);
		alert(testValue);
	}