Javascript syntax Options

[Christian J]

In another topic this iframe script was mentioned: http://www.phpmix.org/iframe_height_auto_r...resize_the_code

Some of its syntax looks unfamiliar to me. What is it called, and could someone explain it?

Example 1:

CODE

var DYNIFS = {
    // Storage for known IFrames.
    iframes: {},
    // Here we save any previously installed onresize handler.
    oldresize: null,
    
    ...etc

Example 2:

CODE

onresize: function() {
    ...etc