arrays - Javascript: How do I create a function that can generate an X amount of objects drawing from fixed amount of classes? -

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for coding assignment, i'm tasked creating function can generate x amount of objects drawing fixed amount of classes. while objects being generated, store objects in array. how go doing in javascript?

pretty same 2 objects. use length of array pick random element, , use loop perform action x times:

/* class definitions */  function animal(){ var = document.createelement('div'); a.classname = 'animal'; return a}  function horse(){ var = new animal(); a.classname += ' horse'; return }  function pig(){ var = new animal(); a.classname += ' pig'; return }  function rat(){ var = new animal(); a.classname += ' rat'; return }    /* variable definitions */  var animals = ['horse', 'pig', 'rat'],      output = document.getelementbyid('output'),      numberofdraws = 5,      res = [];    /* auxiliary functions */  // returns random element given array  function pickrandom(arr){      return arr[ math.floor( math.random()*arr.length ) ];  }    /* main script */  // pick random object 5 times, store in 'res' , show  for(var = 0; < numberofdraws; i++){    res.push( eval('new ' + pickrandom(animals) + '()') );    output.appendchild( res[i] );  }
.animal{float:left;padding:40px;background-size:100%}.horse{background-image:url(https://pbs.twimg.com/profile_images/587037647966613504/mk5oeksb.png)}.pig{background-image:url(https://33.media.tumblr.com/avatar_c2b180faa484_128.png)}.rat{background-image:url(http://38.media.tumblr.com/avatar_614c66cef635_128.png)}
<pre id="output"></pre>

edit: instance of class, can eval class name. see demo above.


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