====== Javascript tricks ======

===== Cookies dans le navigateur =====

**code :**<code javascript>
new Date( 
    new Date().getTime()+(30 * 24*60*60*1000)
).toUTCString() ;
</code>
**result :**
  "Fri, 29 Jul 2016 13:32:43 GMT"

**code :**<code javascript>
document.cookie = 'position.x=100; expires='+new Date( new Date().getTime()+(30 * 24*60*60*1000)).toUTCString() ;
</code>

**code :**<code javascript>
getCookie = function ( name ) {
       
    return document.cookie
                   .split(';')
                   .map(function(el) { 
                                        c = el.split('=') ; 
                                        return { 'name' : c[0], 'value' : c[1] };
                   })
                   .find(function(el) {
                                         return el.name == name ;
               
                   });

};
</code>

**code :**<code javascript>
position = (function ( name ) {
       
    return document.cookie.split(';')
                   .map(function(el) { 
                                        c = el.split('=') ; 
                                        return { 'name' : c[0], 'value' : c[1] };
                   })
                   .find(function(el) {
                                         return el.name == name ;
               
                   })
                   .value ;

})('position.x');
</code>
**result :**
  "100"
  
  
**code :**<code javascript>
position_x = getCookie('position.x') ;
</code>
**result :**
  Object {name: "position.x", value: "100"}