Random integer generation with range of JavaScript

// generates an integer random number with a range of [Min,max] function Randomint (Min,max) {    if(min < 0 | | Max <0) {        throw "does not support negative numbers";    }         var number = parseint (Math.random (). toString (). substring (2));     return number% (max-min) + min;}

//generates a count of non-repeating random numbers, and the range is [Scope_min,scope_max]functionRandomintnorepeat (Count,scope_min,scope_max) {varNumbers = []; if(Scope_max-scope_min < count) {//The range is not correct        Throw"The range is incorrect"; }     for(vari = 0; I < Count;i + +){        varNumber =Randomint (Scope_min,scope_max);  while(numbers.includes (number)) { number=Randomint (Scope_min,scope_max);    } numbers.push (number); }    returnnumbers;}

Random integer generation with range of JavaScript