Nature of Code W4_Particles Week 4. By pressing the mouse, particles will be shattered and if releasing the mouse, particles will go back to the original position. Besides, by sliding over the particles, particles will flee away and then going to to the position. <span data-mce-type="bookmark" style="display: inline-block; width: 0px; overflow: hidden; line-height: 0;" class="mce_SELRES_start"></span> Code can be found here