Simple response to simple coding exercise.

blocks.js

// blocks class; targets a container and specifies a highlight color for the blocks when they are clicked.
// constructor arguments 'args' is a JSON object:
// {
//	container: "#container",	//Container element content blocks should be added to
//	clickColor: "#ff9"			  //Color to be applied to a block after clicking it
// }
function blocks(args) {
  this.container = args['container'];  
  this.clickColor = args['clickColor'];
  
  // event bubbling
  $(this.container).on('click', 'div.block', { col: this.clickColor }, function(event) {
    $(this).css('background-color', event.data.col);
  })  
}

blocks.prototype.add = function(text) {
  var newBlock = $('<div>' + text + '</div>');
  newBlock.addClass('block');
  $(this.container).append(newBlock)
}