function checkValue() { var input_list = document.getElementsByTagName("input"); for (i=0; i< input_list.length; i ++) { thisInput = input_list[i]; if(thisInput.type.toLowerCase()=="checkbox"){ if(getCheckedValue(document.getElementsByName(thisInput.name)) == ""){ thisInput.focus(); window.scrollBy(0, -30); alert("该项不能为空!"); return false; } } } return true;}
function getCheckedValue(radioObj) { if(!radioObj) return ""; var radioLength = radioObj.length; if(radioLength == undefined) if(radioObj.checked) return radioObj.value; else return ""; for(var i = 0; i < radioLength; i++ ) { if(radioObj[i].checked){ return radioObj[i].value; } } return "";}