How do I avoid getting "unexpected token Var" in JavaScript when using loops
<p>I'm trying to count the number of e's in a string and then display it using a while loop I keep getting <code>"Uncaught SyntaxError: Unexpected token var"</code> when running my code, any idea how to fix this issue?</p>

<pre><code>var sentence = "I'm learning JavaScript in my web development module.";
var charLength = sentence.length;
var count = 0;

while(var z=0;z!=charLength;z++;){
    if(sentence.CharAt(z)== "e" {
        count++;
    } 
}
console.log(count);
</code></pre>