JS Array

JSArray

var foo = [];
 
foo.push( "a" );
foo.push( "b" );
 
alert( foo[ 0 ] ); // a
alert( foo[ 1 ] ); // b
 
alert( foo.length ); // 2
 
foo.pop();
 
alert( foo[ 0 ] ); // a
alert( foo[ 1 ] ); // undefined
 
alert( foo.length ); // 1
 
foo.unshift( "z" );
 
alert( foo[ 0 ] ); // z
alert( foo[ 1 ] ); // a
 
alert( foo.length ); // 2
 
foo.shift();
 
alert( foo[ 0 ] ); // a
alert( foo[ 1 ] ); // undefined
 
alert( foo.length ); // 1