這篇文章主要介紹了js中switch case循環實例代碼，有需要的朋友可以參考一下
代碼如下: switch (objNameType) { case 'PD': valueUD = obj.id; id = objName; var loadVUD = UserData.load(exam, id); if (loadVUD == null || loadVUD == undefined || loadVUD == '') { var tmpTGId = obj.id.substr(0, obj.id.indexOf('_')); qNoTotalD[qIdNoStr[tmpTGId]]++; } break; case 'DANX': valueUD = obj.id; var objName = obj.name; var objNameTop = objName.substr(0,objName.indexOf('_')); id = objName; var loadVUD = UserData.load(exam, id); if (loadVUD == null || loadVUD == undefined || loadVUD == '') { var tmpTGId = obj.id.substr(0, obj.id.indexOf('_')); qNoTotalD[qIdNoStr[tmpTGId]]++; } break; case 'PP': valueUD = obj.id; var objName = obj.name; var objNameTop = objName.substr(0,objName.indexOf('_')); id = objName; var loadVUD = UserData.load(exam, id); if (loadVUD == null || loadVUD == undefined || loadVUD == '') { var tmpTGId = obj.id.substr(0, obj.id.indexOf('_')); qNoTotalD[qIdNoStr[tmpTGId]]++; } break; case 'text': valueUD = obj.value; id = "text_" + obj.id; var loadVUD = UserData.load(exam, id); if (loadVUD == null) { if (valueUD == null || valueUD == '') { return; } else { var tmpTGId = obj.id.substr(0, obj.id.indexOf('_')); qNoTotalD[qIdNoStr[tmpTGId]]++; } } else { if (valueUD == null || valueUD == '') { UserData.remove(exam, id); examAnswerKeyStr = removeStrWithcomma(examAnswerKeyStr, id); UserData.save(examinfo, "examAnswerKeyStr", examAnswerKeyStr, 1); var tmpTGId = obj.id.substr(0, obj.id.indexOf('_')); qNoTotalD[qIdNoStr[tmpTGId]]--; return; } } break; case 'checkbox': id = "checkbox_" + obj.id.substr(0, obj.id.lastIndexOf('_')); var key = obj.id.substr(0, obj.id.lastIndexOf('_')); key = "checkbox_" + key; valueUD = UserData.load(exam, key); var flag = obj.checked; if (valueUD == null) { if (flag) { id = key; valueUD = obj.id; var tmpTGId = obj.id.substr(0, obj.id.indexOf('_')); qNoTotalD[qIdNoStr[tmpTGId]]++; } } else { if (flag) { if (valueUD.indexOf(obj.id) == -1) { valueUD += "," + obj.id } } else { if (valueUD.indexOf(obj.id) != -1) { if (valueUD.indexOf(',' + obj.id) != -1) { valueUD = valueUD.replace(',' + obj.id, ''); } else if (valueUD.indexOf(obj.id + ',') != -1) { valueUD = valueUD.replace(obj.id + ',', ''); } else { UserData.remove(exam, key); examAnswerKeyStr = removeStrWithcomma(examAnswerKeyStr, key); UserData.save(examinfo, "examAnswerKeyStr", examAnswerKeyStr, 1); var tmpTGId = obj.id.substr(0, obj.id.indexOf('_')); qNoTotalD[qIdNoStr[tmpTGId]]--; return; } } } } break; case 'textarea': valueUD = obj.value; id = "textarea_" + obj.id; var loadVUD = UserData.load(exam, id); if (loadVUD == null) { if (valueUD == null || valueUD == '') { return; } else { var tmpTGId = obj.id.substr(0, obj.id.indexOf('_')); qNoTotalD[qIdNoStr[tmpTGId]]++; } } else { if (valueUD == null || valueUD == '') { UserData.remove(exam, id); examAnswerKeyStr = removeStrWithcomma(examAnswerKeyStr, id); UserData.save(examinfo, "examAnswerKeyStr", examAnswerKeyStr, 1); var tmpTGId = obj.id.substr(0, obj.id.indexOf('_')); qNoTotalD[qIdNoStr[tmpTGId]]--; return; } } break; default: return; }