Randomly generate non-repeating arrays

functionRandom (arr) {varNEWARR = []; vartemp = {}; functionRandomnumber () { for(vari = 0; i < arr.length; i++) {              varArrindex = Math.floor (Math.random () *arr.length); if(!Temp[arr[arrindex]]) {Newarr.push (Arr[arrindex]) Temp[arr[arrindex]=1;        }}} randomnumber (); returnNEWARR}varA = Random (["2", "34", "14", "98", "21", "22", "32", "134"])     for(varj= 0;j<2;j++) {        $("#container"). Append ("<div>" + a[j] + "</div>")    }    

Idea: The first random in the array to take data, form a new array, if there is repetition, then go to heavy. The way to repeat here is to declare an empty object and then judge the object's properties, which are the contents of the array, and if not, press into the array. form a non-repeating array.

Randomly generate non-repeating arrays