Simple jquery / underscore.js event handler for doing shit when the window resizes.

Simple-resize.js

$(function () {
  var win, lazyResize;

  function handleResize() {
    var divWidth = $('#somediv').width();
    // now do something with that...
  }
  
  // debounce is an underscore.js function.
  // We debounce so it doesn't fire too many times, taking up
  // cycles on the user's computer.
  lazyResize = _.debounce(handleResize, 100);
  // Hold reference to window for speed.
  win = $(window);
  // Apply event handler on resizing window...
  win.on('resize', lazyResize);  
  // Call it once to start
  lazyResize();
});