document.getElementById(‘abc‘)和$(‘#abc‘)区别

原生JS获取html元素:
document.getElementById(‘abc’)
获取到的是一个DOM对象
使用jQuery获取html元素:
$(‘#abc’)
获取到的是一个jQuery对象

$('xxx')获取jQuery对象是一个数组,可以使用$('xxx')[0]将jQuery对象转成DOM对象,从而使用原生JS的API方法
在这里插入图片描述

var rvalidAccount = document.all ? document.all["rvalidAccount"] : document.getElementById("rvalidAccount"); rvalidAccount.controltovalidate = "txtAccount"; rvalidAccount.focusOnError = "t"; rvalidAccount.errormessage = "请键入帐号"; rvalidAccount.display = "Dynamic"; rvalidAccount.validationGroup = "login"; rvalidAccount.evaluationfunction = "RequiredFieldValidatorEvaluateIsValid"; rvalidAccount.initialvalue = ""; var cvLogout = document.all ? document.all["cvLogout"] : document.getElementById("cvLogout"); cvLogout.errormessage = "您已经注销"; cvLogout.display = "Dynamic"; cvLogout.isvalid = "False"; cvLogout.validationGroup = "login"; cvLogout.evaluationfunction = "CustomValidatorEvaluateIsValid"; var cvLicenseFile = document.all ? document.all["cvLicenseFile"] : document.getElementById("cvLicenseFile"); cvLicenseFile.errormessage = "授权信息不正确无法启用应用程序"; cvLicenseFile.display = "Dynamic"; cvLicenseFile.validationGroup = "login"; cvLicenseFile.evaluationfunction = "CustomValidatorEvaluateIsValid"; var cvalidLogin = document.all ? document.all["cvalidLogin"] : document.getElementById("cvalidLogin"); cvalidLogin.errormessage = "帐号或密码错误。<br/>若使用AD验证,帐号输入格式为:AD Domain\\Account,例:ABC\\admin"; cvalidLogin.display = "Dynamic"; cvalidLogin.validationGroup = "login"; cvalidLogin.evaluationfunction = "CustomValidatorEvaluateIsValid"; var cvLicenseFull = document.all ? document.all["cvLicenseFull"] : document.getElementById("cvLicenseFull"); cvLicenseFull.errormessage = "授权人数已满无法登录"; cvLicenseFull.display = "Dynamic"; cvLicenseFull.validationGroup = "login"; cvLicenseFull.evaluationfunction = "CustomValidatorEvaluateIsValid"; var cvLicenseExpired = document.all ? document.all["cvLicenseExpired"] : document.getElementById("cvLicenseExpired"); cvLicenseExpired.errormessage = "授权已到期无法登录<br/>MachineCode:<br/>Can\'t get machine code"; cvLicenseExpired.display = "Dynamic"; cvLicenseExpired.validationGroup = "login"; cvLicenseExpired.evaluationfunction = "CustomValidatorEvaluateIsValid"; var rvalidAccount2 = document.all ? document.all["rvalidAccount2"] : document.getElementById("rvalidAccount2"); rvalidAccount2.controltovalidate = "txtAccount2"; rvalidAccount2.errormessage = "请键入帐号"; rvalidAccount2.display = "Dynamic"; rvalidAccount2.validationGroup = "forget"; rvalidAccount2.evaluationfunction = "RequiredFieldValidatorEvaluateIsValid"; rvalidAccount2.initialvalue = ""; var cvAccountFail = document.all ? document.all["cvAccountFail"] : document.getElementById("cvAccountFail"); cvAccountFail.errormessage = "未找到此帐号,请重新输入"; cvAccountFail.display = "Dynamic"; cvAccountFail.validationGroup = "forget"; cvAccountFail.evaluationfunction = "CustomValidatorEvaluateIsValid"; var cvMailFail = document.all ? document.all["cvMailFail"] : document.getElementById("cvMailFail"); cvMailFail.errormessage = "个人数据未设置邮箱,无法寄送凭证码,请洽系统管理员"; cvMailFail.display = "Dynamic"; cvMailFail.validationGroup = "forget"; cvMailFail.evaluationfunction = "CustomValidatorEvaluateIsValid"; var cvMobileFail = document.all ? document.all["cvMobileFail"] : document.getElementById("cvMobileFail"); cvMobileFail.errormessage = "个人数据未设置邮箱或手机,无法寄送凭证码,请洽系统管理员"; cvMobileFail.display = "Dynamic"; cvMobileFail.validationGroup = "forget"; cvMobileFail.evaluationfunction = "CustomValidatorEvaluateIsValid"; var cvSuccess = document.all ? document.all["cvSuccess"] : document.getElementById("cvSuccess"); cvSuccess.errormessage = "发送密码通知成功"; cvSuccess.display = "Dynamic"; cvSuccess.validationGroup = "forget"; cvSuccess.evaluationfunction = "CustomValidatorEvaluateIsValid"; var cvCodeErrorInvalid = document.all ? document.all["cvCodeErrorInvalid"] : document.getElementById("cvCodeErrorInvalid"); cvCodeErrorInvalid.errormessage = "请于五分钟后重新索取凭证码"; cvCodeErrorInvalid.display = "Dynamic"; cvCodeErrorInvalid.validationGroup = "forget"; cvCodeErrorInvalid.evaluationfunction = "CustomValidatorEvaluateIsValid"; var cvSmsCreditError = document.all ? document.all["cvSmsCreditError"] : document.getElementById("cvSmsCreditError"); cvSmsCreditError.errormessage = "简讯点数不足,无法发送简讯,请洽系统管理员"; cvSmsCreditError.display = "Dynamic"; cvSmsCreditError.validationGroup = "forget"; cvSmsCreditError.evaluationfunction = "CustomValidatorEvaluateIsValid"; 解析这段代码
11-13
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