我正在尝试在index.html 中实现一个自定义的谷歌登录按钮，该按钮在页面加载时完美运行，但在页面重新加载或从另一个页面重定向时则不起作用。页面加载时，控制台语句 1,2 和 3 会自动按顺序打印，4 会在登录时打印。当从另一个页面重定向或刷新时，控制台仅打印 1 和 2，并且该按钮不可单击。包含gapi的脚本包含在
<script src="https://apis.google.com/js/api:client.js"></script>
在index.html中。如果这与此有关，我正在使用 AngularJS。
var googleUser = {};
var startApp = function() {
console.log("1");
gapi.load('auth2', function(){
// Retrieve the singleton for the GoogleAuth library and set up the client.
console.log("2");
auth2 = gapi.auth2.init({
client_id: '*************.apps.googleusercontent.com',
cookiepolicy: 'single_host_origin',
// Request scopes in addition to 'profile' and 'email'
scope: 'profile email'
});
setTimeout(function(){
attachSignin(document.getElementById('g_login'));
}, 1000);
// attachSignin(document.getElementById('g_login'));
});
};
function attachSignin(element) {
console.log("3");
auth2.attachClickHandler(element, {},
function(googleUser) {
console.log("4");
document.getElementById('name').innerText = "Signed in: " +
googleUser.getBasicProfile().getName();
angular.element(document.getElementById('status')).scope().googleLogin(googleUser.getAuthResponse().id_token);
}, function(error) {
alert(JSON.stringify(error, undefined, 2));
});
}
startApp();
</script>
Solved.
每次加载页面时，全局变量“auth2”都会自动初始化，并可用于登录用户。
该脚本被称为：
<script src="https://apis.google.com/js/api:client.js?onload=onLoadCallback" async defer></script>
<script>
var auth2;
var googleUser = {};
var auth3;
window.onLoadCallback = function(){
gapi.load('auth2', function () {
auth2 = gapi.auth2.init({
client_id: '**********.apps.googleusercontent.com',
cookiepolicy: 'single_host_origin',
// Request scopes in addition to 'profile' and 'email'
scope: 'profile email'
});
auth3 = true;
startApp();
})
}
var startApp = function() {
element = document.getElementById('g_login');
auth2.attachClickHandler(element, {},
function(googleUser) {
console.log("4");
document.getElementById('name').innerText = "Signed in: " +
googleUser.getBasicProfile().getName();
angular.element(document.getElementById('status')).scope().googleLogin(googleUser.getAuthResponse().id_token);
}, function(error) {
console.log("5");
alert(JSON.stringify(error, undefined, 2));
});
};
if (auth3)
startApp();
</script>
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