title: Create an if condition dynamically
body: <p>I have the following array and I created a function to return items from the array based on the passed filter.</p>
  
  <pre><code>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 = [];
      for (var i = 0; i &lt; 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]
  </code></pre>
  
  <p>This works as long as I pass a single filter. If I want to pass two filters, e.g., <code>getGrades(["E", 3], ["B1", 2])</code> it won't work.</p>
  
  <p>I need a way to configure (extend) the if condition <code>students[i][arguments[0][1]] == arguments[0][0]</code> based on the passed arguments.</p>
  
  <p>For <code>getGrades(["E", 3], ["B1", 2])</code>, if condition should be</p>
  
  <pre><code>students[i][arguments[0][1]] == arguments[0][0] &amp;&amp; students[i][arguments[1][1]] == arguments[1][0]
  </code></pre>
  
  <p>How can I dynamically create an if condition?</p>