[FIXED] How I get Input text string value to javascript?

Issue

I'm still learning Javascript and I need to get input type text value to javascript code and convert it to integer. but everytime it display "Your fail" even i input higher mark. I need help to find my error.

function mark() {
    var sMark = document.form.mark.value;
    var myMark = parseInt(sMark);
    if (myMark > 75) {
        document.write("You  pass exam with Higher mark");

    } else if (myMark > 50) {
        document.write("You pass exam");

    } else {
        document.write("You Fail");
    }
}

<form action="" name="form">
        Enter Your Mark: <input type="text" name="mark" id="mark1">
        <input type="submit" value="Submit" onclick="mark()"><br>
    </form>

Solution

The input with the name "mark" is shadowing the global mark function in the inline onclick handler. Either rename those or directly call window.mark().

function mark() {
  var sMark = document.form.mark.value;
  var myMark = parseInt(sMark);
  if (myMark > 75) {
    document.write("You  pass exam with Higher mark");

  } else if (myMark > 50) {
    document.write("You pass exam");

  } else {
    document.write("You Fail");
  }
}

<form action="" name="form">
  Enter Your Mark: <input type="text" name="mark" id="mark1">
  <input type="submit" value="Submit" onclick="window.mark()"><br>
</form>

Answered By - Unmitigated

Answer Checked By - Gilberto Lyons (PHPFixing Admin)