Question

I’m having problems in the JavaScript I have written. This script is suppose to prompt the user for the weight, from 0 to 126 and then have an alert box pop up descibing the weight they are in.

weight class      from    to
-------------------------------
Fly               0     112
SuperFly          112   115
Bantam            115   118
SuperBantam       118   122
Feather           122   126

<script type="text/javascript">
  var weight = parseInt(prompt("What is your weight?"));
  if (weight > 126) {
    alert('Please enter a weight lighter than 126');
  }
  document.writeln('<br/>');
  var wArray = String ([fly,superfly,bantam,superbantam,feather]);

  function recruit() {
    if (0 < weight < 112){
      document.writeln('You are in' + wArray[0] +'class!');
    }
    if (112 < weight < 115){
     document.writeln('You are in' + wArray[1] +'class!');
    }
    if (115 < weight < 118){
      document.writeln('You are in' + wArray[2] +'class!');
    }
    if (118 < weight < 122){
      document.writeln('You are in' + wArray[3] +'class!');
    }
    if (122 < weight 126){
      document.writeln('Your weight class is' + wArray[4]);
    }

</script>

Answer 1

Change this

var wArray = String ([fly,superfly,bantam,superbantam,feather]);

to this

var wArray = ["fly", "superfly", "bantam", "superbantam", "feather"];

All arrays in JavaScript are dynamically typed. There’s no way to create a string array; you just create an array and fill it with strings.

Also,

if (115 < weight < 118)

is not valid. You want

if (weight > 115 && weight < 118)