bundle.js

//Function for create variables    
function createVariables()
{
    for ( i=1; i<=24; i++ )
    {
        //create variables with DOM
        var str ="nilai"+ i+" = document.querySelectorAll(`#nilai_"+i+"`)";
        //Declaring and Setting dynamic variable to undefined using eval
        eval(str);
    }
}
createVariables();

//The Answer
nilai1[2].checked = true
nilai2[2].checked = true
nilai3[3].checked = true
nilai4[2].checked = true
nilai5[3].checked = true
nilai6[3].checked = true
nilai7[1].checked = true
nilai8[3].checked = true
nilai9[2].checked = true
nilai10[3].checked = true
nilai11[1].checked = true
nilai12[2].checked = true
nilai13[2].checked = true
nilai14[2].checked = true
nilai15[2].checked = true
nilai16[2].checked = true
nilai17[3].checked = true
nilai18[3].checked = true
nilai19[2].checked = true
nilai20[2].checked = true
nilai21[2].checked = true
nilai22[3].checked = true
nilai23[2].checked = true
nilai24[3].checked = true