How to use JavaScript to implement sorting algorithms

 var a = Array();
    flag=true;
    var i = 0;
    var j = 0;
    var temp = 0;
    while(flag){
        var b = prompt("Please enter the i-th number:");
        if(b=="#"){
          flag=false;
        }else{
            a[i] = b;
        }
        i++;
    }
   
    s = a.length;
    for(j=0;j<s;j++){
        console.log(a[j]); 
    }
    for(j=1;j<s;j++){
       for(i=0;i<sj;i++){
           if(a[i]>a[i+1]){
                temp=a[i];
                a[i]=a[i+1];
                a[i+1]=temp;
           }
       }
    }
    for(j=0;j<s;j++){
        console.log("Ascending order:",a[j]); 
    }

    var a = Array();
    flag=true;
    var i = 0;
    var j = 0;
    var temp = 0;
    while(flag){
        var b = prompt("Please enter the i-th number:");
        if(b=="#"){
          flag=false;
        }else{
            a[i] = b;
        }
        i++;
    }
    s = a.length;
    for(j=0;j<s;j++){
        console.log("array:",a[j]); 
    }
    for(i=0;i<s;i++){
        for(j=0;j<s;j++){
            if(a[i]>a[j]){
                temp = a[j];
                a[j] = a[i];
                a[i] = temp;
            }
        }
    }
    for(j=s-1;j>=0;j--){
        console.log("Select sort:",a[j]); 
    }

var flag = true;
    var a = new Array();
    var i=0;
    while(flag){
        
        var s = prompt('Please enter a number:');
        if(s=='#'){
            flag=false;
        }else{
            a[i] = s;
        }
        i++;
    }
    console.log(a);
    for(var i=1;i<a.length;i++){
    for(var j = i;j>0;j--){
        if(a[j-1]>a[j]){
            var temp = a[j-1];
            a[j-1] = a[j];
            a[j] = temp;
        }
    }
}
for(var i=0;i<a.length;i++){
console.log(a[i]);
}