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); 
	}