javascript - Create an if condition dynamically -

i have following array , created function return items array based on passed filter.

var students = [     //name      grade   room        gender     ["name1",   80,     "farabi",   "k"],     ["name2",   73,     "b1",       "k"],     ["name3",   73,     "b1",       "k"],     ["name4",   60,     "farabi",   "k"],     ["name5",   80,     "b1",       "e"],     ["name6",   43,     "farabi",   "e"], ];  function getgrades() {     var grades = [];     (var = 0; < students.length; i++) {         if (students[i][arguments[0][1]] == arguments[0][0]) {             grades.push(students[i][1]);         }     }     return grades; }  getgrades(["e", 3]); // [gender, column index] 

this works long pass single filter. if want pass 2 filters, e.g., getgrades(["e", 3], ["b1", 2]) won't work.

i need way configure (extend) if condition students[i][arguments[0][1]] == arguments[0][0] based on passed arguments.

for getgrades(["e", 3], ["b1", 2]), if condition should be

students[i][arguments[0][1]] == arguments[0][0] && students[i][arguments[1][1]] == arguments[1][0] 

how can dynamically create if condition?

rather trying dynamically create if condition, can iterate through each of arguments , check them individually. if 1 of them fails, fail. likewise, if none of them fails, know total result valid.

for (var = 0; < students.length; i++) {   var student = students[i];   var matched = true; // won't change if of conditions pass   (var j = 0; j < arguments.length; j++) {     var filter = arguments[j];     if (student[filter[1]] !== filter[0]) {       matched = false; // 1 of conditions failed, don't check rest       break;     }   }   if (matched) {     grades.push(student[1]);   } }