That's the error I'm getting from the Google Chrome JavaScript console when I try to run my page. It refers me to the following line
function char_counter(var str)
from the following code
<html>
<head>
<script type="text/javascript">
function text_change_steps()
{
/* STEP 1:
Get text from cells
*/
document.write("Okay, we made it into the function.");
var textStart = document.getElementById("ipt").value;
var textTarget = document.getElementById("tgt").value;
/* STEP 2:
Create 2 maps, one for the letters that need added to textStart,
the other for the letters that need removed from textStart.
EXAMPLE:
If textStart="dude" and textTarget="deck", then following procedure
creates 2 maps, needAdded and needRemoved with key-value pairs
needAdded['c']=1, needAdded['k']=1, needRemoved['u']=1,
and needRemoved['d']=1.
*/
var startChars = char_counter(textStart);
var targetChars = char_counter(textTarget);
var needAdded = map_disjunct(startChars, targetChars);
var needRemoved = map_disjunct(targetChars, startChars);
/* STEP 3:
Display what needs removed and what needs added. Demonstrate process.
*/
if (!is_empty(needRemoved))
{
for (var k in needRemoved)
{
document.write("<p>Need to remove " + needRemoved[k] + " occurence" + (needRemoved[k] > 1 ? "s" : "") + " of <i>" + k + "</i></p>");
}
}
}
function char_counter(var str)
{
/* Given a string str, return a map whose keys are the characters contained
in str and whose values are the corresponding count of each character.
EXAMPLE: Given "aabnsab", return retMap where retMap['a']=3, retMap['b']=2,
retMap['n']=1, retMap['s']=1.
*/
var retMap = {};
for (var k = 0, n = str.length; k < n; ++k)
{
if (str[k] in retMap)
++retMap[str[k]];
else
retMap[str[k]] = 1;
}
return retMap;
}
function map_disjunt(var m1, m2)
{
/* Given maps m1 and m2 with the same key type and with values in the set
{0, 1, 2, ...}, return a map whose keys are every key from m1 that is
in m2 and has a value greater than the corresponding one in m2, or is
in m1 but not m2. The value will be the difference.
EXAMPLE:
If m1 has m1['a']=3 and m1['b']=1 and m2 has m2['a']=1, then retMap['a']=2
and retMap['b']=1.
*/
var retMap = {};
for (var k in m1)
{
var otherCount = (k in m2) ? m2[k] : 0;
if (m1[k] > otherCount)
retMap[k] = m1[k] - otherCount;
}
return retMap;
}
function is_empty(var M)
{
/* Function to determine whether a map is empty
*/
for (var k in M)
if (M.hasOwnProperty(k))
return false;
return true;
}
</script>
<style type="text/css">
</style>
</head>
<body>
<p>Staring word:</p>
<input type="text"t id="ipt"/>
<p>Ending text:</p>
<input type="text" id="tgt"/>
<p><button onclick="text_change_steps()">Show transformation steps</button></p>
</body>
</html>
What's the deal??
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