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本文介绍了一个包含电子邮件地址验证及地理位置选择的表单案例。该表单通过JavaScript进行实时验证,确保用户输入有效的电子邮件地址,并从下拉列表中选择正确的地理位置。此外,还详细介绍了如何使用JavaScript来禁用提交按钮并显示加载图标,从而提升用户体验。

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Location*Please select…United StatesAfghanistanÅland IslandsAlbaniaAlgeriaAmerican SamoaAndorraAngolaAnguillaAntarcticaAntigua and BarbudaArgentinaArmeniaArubaAustraliaAustriaAzerbaijanBahamasBahrainBangladeshBarbadosBelarusBelgiumBelizeBeninBermudaBhutanBolivia, Plurinational State ofBonaire, Sint Eustatius and SabaBosnia and HerzegovinaBotswanaBouvet IslandBrazilBritish Indian Ocean TerritoryBrunei DarussalamBulgariaBurkina FasoBurundiCambodiaCameroonCanadaCape VerdeCayman IslandsCentral African RepublicChadChileChinaChristmas IslandCocos (Keeling) IslandsColombiaComorosCongoCongo, the Democratic Republic of theCook IslandsCosta RicaCôte d'IvoireCroatiaCubaCuraçaoCyprusCzech RepublicDenmarkDjiboutiDominicaDominican RepublicEcuadorEgyptEl SalvadorEquatorial GuineaEritreaEstoniaEthiopiaFalkland Islands (Malvinas)Faroe IslandsFijiFinlandFranceFrench GuianaFrench PolynesiaFrench Southern TerritoriesGabonGambiaGeorgiaGermanyGhanaGibraltarGreeceGreenlandGrenadaGuadeloupeGuamGuatemalaGuernseyGuineaGuinea-BissauGuyanaHaitiHeard Island and McDonald IslandsHoly See (Vatican City State)HondurasHong KongHungaryIcelandIndiaIndonesiaIran, Islamic Republic ofIraqIrelandIsle of ManIsraelItalyJamaicaJapanJerseyJordanKazakhstanKenyaKiribatiKorea, Democratic People's Republic ofKorea, Republic ofKuwaitKyrgyzstanLao People's Democratic RepublicLatviaLebanonLesothoLiberiaLibyan Arab JamahiriyaLiechtensteinLithuaniaLuxembourgMacaoMacedonia, the former Yugoslav Republic ofMadagascarMalawiMalaysiaMaldivesMaliMaltaMarshall IslandsMartiniqueMauritaniaMauritiusMayotteMexicoMicronesia, Federated States ofMoldova, Republic ofMonacoMongoliaMontenegroMontserratMoroccoMozambiqueMyanmarNamibiaNauruNepalNetherlandsNew CaledoniaNew ZealandNicaraguaNigerNigeriaNiueNorfolk IslandNorthern Mariana IslandsNorwayOmanPakistanPalauPalestinian Territory, OccupiedPanamaPapua New GuineaParaguayPeruPhilippinesPitcairnPolandPortugalPuerto RicoQatarReunionRomaniaRussian FederationRwandaSaint BarthélemySaint Helena, Ascension and Tristan da CunhaSaint Kitts and NevisSaint LuciaSaint Martin (French part)Saint Pierre and MiquelonSaint Vincent and the GrenadinesSamoaSan MarinoSao Tome and PrincipeSaudi ArabiaSenegalSerbiaSeychellesSierra LeoneSingaporeSint Maarten (Dutch part)SlovakiaSloveniaSolomon IslandsSomaliaSouth AfricaSouth Georgia and the South Sandwich IslandsSouth SudanSpainSri LankaSudanSurinameSvalbard and Jan MayenSwazilandSwedenSwitzerlandSyrian Arab RepublicTaiwanTajikistanTanzania, United Republic ofThailandTimor-LesteTogoTokelauTongaTrinidad and TobagoTunisiaTurkeyTurkmenistanTurks and Caicos IslandsTuvaluUgandaUkraineUnited Arab EmiratesUnited KingdomUnited States Minor Outlying IslandsUruguayUzbekistanVanuatuVenezuela, Bolivarian Republic ofViet NamVirgin Islands (British)Virgin Islands, U.S.Wallis and FutunaWestern SaharaYemenZambiaZimbabwe

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elq_hp*var dom1 = document.querySelector('#form1783 #field1');var field1 = new LiveValidation(dom1, {validMessage: "", onlyOnBlur: false, wait: 300});field1.add(Validate.Presence, {failureMessage:"This field is required"});field1.add(Validate.Format, {pattern: /(^[A-Z0-9!#$%&'\*\+\-\/=\?\^_`\{\|\}~][A-Z0-9!#$%&'\*\+\-\/=\?\^_`\{\|\}~\.]{0,62}@(([A-Z0-9](?:[A-Z0-9\-]{0,61}[A-Z0-9])?)(\.[A-Z0-9](?:[A-Z0-9\-]{0,61}[A-Z0-9])?)+)$)/i, failureMessage: "A valid email address is required"});field1.add(Validate.Format, {pattern: /\.\.|\.@/i, failureMessage: "A valid email address is required", negate: "true"});var dom2 = document.querySelector('#form1783 #field2');var field2 = new LiveValidation(dom2, {validMessage: "", onlyOnBlur: false, wait: 300});field2.add(Validate.Presence, {failureMessage:"This field is required"});var dom5 = document.querySelector('#form1783 #field5');var field5 = new LiveValidation(dom5, {validMessage: "", onlyOnBlur: false, wait: 300});field5.add(Validate.Custom, {against: function(value) {return !value.match(/(telnet|ftp|https?):\/\/(?:[a-z0-9][a-z0-9-]{0,61}[a-z0-9]\.|[a-z0-9]\.)+[a-z]{2,63}/i);}, failureMessage: "Value must not contain any URL's"});field5.add(Validate.Presence, {failureMessage:"This field is required"});field5.add(Validate.Length, {tooShortMessage:"Invalid length for field value", tooLongMessage: "Invalid length for field value", minimum: 4, maximum: 4});function handleFormSubmit(ele) { var submitButton = ele.querySelector('input[type=submit]'); var spinner = document.createElement('span'); spinner.setAttribute('class', 'loader'); submitButton.setAttribute('disabled', true); submitButton.style.cursor = 'wait'; submitButton.parentNode.appendChild(spinner); return true; }function resetSubmitButton(e){ var submitButtons = e.target.form.getElementsByClassName('submit-button'); for(var i=0;i

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