自定义自动呈现的登录按钮(推荐)
如需创建具有自定义设置的 Google 登录按钮,请将
一个元素来包含登录页面的登录按钮,编写一个函数
调用
signin2.render()
您的样式和范围设置
并添加 https://apis.google.com/js/platform.js
脚本
替换为查询字符串 onload=YOUR_RENDER_FUNCTION
。
以下示例展示了一个指定自定义样式参数的 Google 登录按钮:
上述按钮可通过以下 HTML、JavaScript 和 CSS 代码生成:
<html> <head> <meta name="google-signin-client_id" content="YOUR_CLIENT_ID.apps.googleusercontent.com"> </head> <body> <div id="my-signin2"></div> <script> function onSuccess(googleUser) { console.log('Logged in as: ' + googleUser.getBasicProfile().getName()); } function onFailure(error) { console.log(error); } function renderButton() { gapi.signin2.render('my-signin2', { 'scope': 'profile email', 'width': 240, 'height': 50, 'longtitle': true, 'theme': 'dark', 'onsuccess': onSuccess, 'onfailure': onFailure }); } </script> <script src="https://apis.google.com/js/platform.js?onload=renderButton" async defer></script> </body> </html>
您还可以为自定义 Google 登录按钮指定设置,方法是将 data-
属性定义为具有类 g-signin2
的 div
元素。例如:
<div class="g-signin2" data-width="300" data-height="200" data-longtitle="true">
使用自定义图形构建按钮
您可以构建与自己网站设计相称的 Google 登录按钮。 您必须遵守品牌推广指南并使用 为按钮选择合适的颜色和图标。品牌推广指南还提供了可用于设计按钮的图标资源。您还必须 确保您的按钮与其他第三方登录选项一样显眼。
以下是一个使用自定义 图形:
上述按钮可通过以下 HTML、JavaScript 和 CSS 代码生成:
<html> <head> <link href="https://fonts.googleapis.com/css?family=Roboto" rel="stylesheet" type="text/css"> <script src="https://apis.google.com/js/api:client.js"></script> <script> var googleUser = {}; var startApp = function() { gapi.load('auth2', function(){ // Retrieve the singleton for the GoogleAuth library and set up the client. auth2 = gapi.auth2.init({ client_id: 'YOUR_CLIENT_ID.apps.googleusercontent.com', cookiepolicy: 'single_host_origin', // Request scopes in addition to 'profile' and 'email' //scope: 'additional_scope' }); attachSignin(document.getElementById('customBtn')); }); }; function attachSignin(element) { console.log(element.id); auth2.attachClickHandler(element, {}, function(googleUser) { document.getElementById('name').innerText = "Signed in: " + googleUser.getBasicProfile().getName(); }, function(error) { alert(JSON.stringify(error, undefined, 2)); }); } </script> <style type="text/css"> #customBtn { display: inline-block; background: white; color: #444; width: 190px; border-radius: 5px; border: thin solid #888; box-shadow: 1px 1px 1px grey; white-space: nowrap; } #customBtn:hover { cursor: pointer; } span.label { font-family: serif; font-weight: normal; } span.icon { background: url('/identity/sign-in/g-normal.png') transparent 5px 50% no-repeat; display: inline-block; vertical-align: middle; width: 42px; height: 42px; } span.buttonText { display: inline-block; vertical-align: middle; padding-left: 42px; padding-right: 42px; font-size: 14px; font-weight: bold; /* Use the Roboto font that is loaded in the <head> */ font-family: 'Roboto', sans-serif; } </style> </head> <body> <!-- In the callback, you would hide the gSignInWrapper element on a successful sign in --> <div id="gSignInWrapper"> <span class="label">Sign in with:</span> <div id="customBtn" class="customGPlusSignIn"> <span class="icon"></span> <span class="buttonText">Google</span> </div> </div> <div id="name"></div> <script>startApp();</script> </body> </html>