[About ES5]What's diff btw these two functions

Question

var a1 = function (args) {};var a2 = function b (args) {};More explicit example about using the lib Three.js:a1cljs_exp.core.particleRender = (function cljs_exp$core$particleRender(context){  context.beginPath();  ...  return context.fill();});a2cljs_exp.core.particleRender = (function(context) {  context.beginPath();  ...   return context.fill();});And parse the param a1 or a2, will get different result.var material_11537 = (new THREE.ParticleCanvasMaterial((function() {  var obj11536 = {    "color": cljs_exp.core.getRandomColor.call(null),    "program": ** * cljs_exp.core.particleRender ** *  };  return obj11536;})()));