JAVASCRIPT

how to find missing number in integer array of 1 to 100 in javascript

 let array = new Array(100);                       // Sorted Array of 100
for (let a = 0; a < array.length; a++) {
   if(a===44){continue}
   else{ array[a] = a + 1;}
}
for(let n = 1; n < array.length; n++) { 
    if (! array.includes(n)) { 
        console.log('Missing integer', n); 
        break; // end program 
    } 
}