Google ログイン クライアントを初期化したら、クライアントのさまざまな属性とメソッドをチェックし、ユーザーのセッション状態を判断するハンドラをアタッチできます。クライアント オブジェクトから返された情報を使用して、ユーザーの複数のタブやデバイス間でサイトのユーザー エクスペリエンスを同期できます。
/***TheSign-Inclientobject.*/varauth2;/***InitializestheSign-Inclient.*/varinitClient=function(){gapi.load('auth2',function(){/***RetrievethesingletonfortheGoogleAuthlibraryandsetupthe*client.*/auth2=gapi.auth2.init({client_id:'CLIENT_ID.apps.googleusercontent.com'});//Attachtheclickhandlertothesign-inbuttonauth2.attachClickHandler('signin-button',{},onSuccess,onFailure);});};/***Handlesuccessfulsign-ins.*/varonSuccess=function(user){console.log('Signed in as '+user.getBasicProfile().getName());};/***Handlesign-infailures.*/varonFailure=function(error){console.log(error);};
[[["わかりやすい","easyToUnderstand","thumb-up"],["問題の解決に役立った","solvedMyProblem","thumb-up"],["その他","otherUp","thumb-up"]],[["必要な情報がない","missingTheInformationINeed","thumb-down"],["複雑すぎる / 手順が多すぎる","tooComplicatedTooManySteps","thumb-down"],["最新ではない","outOfDate","thumb-down"],["翻訳に関する問題","translationIssue","thumb-down"],["サンプル / コードに問題がある","samplesCodeIssue","thumb-down"],["その他","otherDown","thumb-down"]],["最終更新日 2025-07-25 UTC。"],[[["\u003cp\u003eThe Google Sign-In JavaScript library is deprecated and will eventually be sunset; developers should consult the Deprecation and Sunset guide for migration details and timelines.\u003c/p\u003e\n"],["\u003cp\u003eGoogle Sign-In will require the use of FedCM APIs in the future, so developers should conduct an impact assessment to ensure their sign-in functionality remains unaffected.\u003c/p\u003e\n"],["\u003cp\u003eThis page provides code demonstrating how to initialize the Google Sign-In client and attach click handlers to manage user sign-in and session state.\u003c/p\u003e\n"],["\u003cp\u003eDevelopers can utilize the \u003ccode\u003eauth2\u003c/code\u003e object to handle successful and failed sign-in attempts, accessing user information upon successful authentication.\u003c/p\u003e\n"]]],[],null,[]]