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05s-the-session.md.erb
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05s-the-session.md.erb
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---
title: The Session
slug: the-session
date: 0005/01/02
number: 5.5
sidebar: true
contents: Learn about the Meteor Session|Learn about the autorun function|Learn about Hot Code Reload
paragraphs: 33
---
////
////
////
### The Meteor Session
////
////
////
### Changing the Session
////
~~~js
❯ Session.set('pageTitle', 'A different title');
~~~
<%= caption "Browser console" %>
////
////
~~~html
<header class="navbar">
<div class="navbar-inner">
<a class="brand" href="{{pathFor 'postsList'}}">{{pageTitle}}</a>
</div>
</header>
~~~
<%= caption "client/views/application/layout.html"%>
~~~js
Template.layout.helpers({
pageTitle: function() { return Session.get('pageTitle'); }
});
~~~
<%= caption "client/views/application/layout.js"%>
////
////
~~~js
❯ Session.set('pageTitle', 'A brand new title');
~~~
<%= caption "Browser console" %>
////
<% note do %>
### Identical Changes
////
<% end %>
### Introducing Autorun
////
////
~~~js
helloWorld = function() {
alert(Session.get('message'));
}
~~~
////
////
////
~~~js
❯ Deps.autorun( function() { console.log('Value is: ' + Session.get('pageTitle')); } );
Value is: A brand new title
~~~
<%= caption "Browser console" %>
////
~~~js
❯ Session.set('pageTitle', 'Yet another value');
Value is: Yet another value
~~~
<%= caption "Browser console" %>
////
////
~~~js
Deps.autorun(function() {
alert(Session.get('message'));
});
~~~
////
### Hot Code Reload
////
////
////
~~~js
❯ Session.set('pageTitle', 'A brand new title');
❯ Session.get('pageTitle');
'A brand new title'
~~~
<%= caption "Browser console" %>
////
~~~js
❯ Session.get('pageTitle');
'A brand new title'
~~~
<%= caption "Browser console" %>
////
////
////
~~~js
❯ Session.get('pageTitle');
null
~~~
<%= caption "Browser console" %>
////
////
1. ////
2. ////