JS判断正则表达式验证规则

/////* 是否英文 */function isEnglish(v) {var re = new RegExp("^[a-zA-Z\_]+$");if (re.test(v)) return true;return false;}/* 是否英文+数字 */function isEnglishAndNumber(v) {var re = new RegExp("^[0-9a-zA-Z\_]+$");if (re.test(v)) return true;return false;}/* 是否汉字 */function isChinese(v) {var re = new RegExp("^[\u4e00-\u9fa5]+$");if (re.test(v)) return true;return false;}/*自定义vtype*/mini.VTypes["englishErrorText"] = "请输入英文";mini.VTypes["english"] = function (v) {var re = new RegExp("^[a-zA-Z\_]+$");if (re.test(v)) return true;return false;}