以下屏幕截图显示了登录和注册的组合表单:
以下模块用于渲染AuthView
:
MyApp.module("User", function(User, App, Backbone, Marionette, $, _) {
User.AuthView = Marionette.ItemView.extend({
className: "reveal-modal",
template: "user/auth",
ui: {
signInForm: "#signin-form",
signUpForm: "#signup-form"
},
events: {
"focus input": "onFocus"
},
onFocus: function() {
console.log("Some input field has received focus.");
},
onRender: function() {
this.signInForm = new Backbone.Form({
schema: {
signInEmail: {
type: "Text",
title: "E-Mail address"
},
signInPassword: {
type: "Password",
title: "Password"
}
}
}).render();
this.ui.signInForm.prepend(this.signInForm.el);
this.signUpForm = new Backbone.Form({
schema: {
signUpEmail: {
type: "Text",
title: "E-Mail address"
},
signUpPassword: {
type: "Password",
title: "Password"
},
signUpPasswordConfirmation: {
type: "Password",
title: "Password confirmation"
}
}
}).render();
this.ui.signUpForm.prepend(this.signUpForm.el);
}
});
});
如何在呈现每个子表单时自动聚焦第一个字段?第一个字段将signInEmail
用于signInForm
和signUpEmail
。
我试着听事件。当我单击其中一个输入字段时会触发此类事件,而不是之前。signUpForm
focus input
同时,受当前答案的启发,我想出了以下辅助函数:
focusFirstFormField: function(form) {
if (_.isUndefined(form)) {
throw "IllegalStateException: Form is undefined."
}
// TODO: AuthView does not focus first sign-in field.
var firstInput = form.find(':input:first');
if (_.isObject(firstInput)) {
if (firstInput.length > 0) {
firstInput = firstInput[0];
}
else {
throw "IllegalStateException: Form find returns an empty jQuery object."
}
}
_.defer(function() {
firstInput.focus();
});
}
不过,仍然需要改进。