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@daveyerwinOct 24.2015 — #
Your code should be more like this...
don't use eval unless you
fully understand what it does@daveyerwinOct 24.2015 — #
generally, You don't have to store the binary as string ...
but in your case you may have to
because the leading zeros may
be significant ?
[RESOLVED] Help Please!
I am developing an educational website that uses a Huffman Coding Tree and given user input, it prints the compressed binary on the page. I am using this code:
[CODE]
function toBinary(){
var message = document.getElementById(“word”).value;
for (rep = 0; rep < message.length; rep++)
{
write(message.substring(rep,rep+1));
}
where “word” is my textarea. I already have variables named a-z that are set correspondingly to their compressed binary strings, and my hope is that if the substring returns an “h” it will print out the binary stored in var “h”. I know that this code as it is, will only print out the letter “h”. Also, if i use:
[CODE]
write(eval(message.substring(rep,rep+1)));
it only works as I want it to 8 out of the 26 times. If anyone else knows how to fix my code so that it can stay very short like this, I would greatly appreciate it.
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0
@daveyerwinOct 24.2015 — #I am developing an educational website that uses a Huffman Coding Tree and given user input, it prints the compressed binary on the page. I am using this code:
[CODE]
function toBinary(){
var message = document.getElementById("word").value;
for (rep = 0; rep < message.length; rep++)
{
write(message.substring(rep,rep+1));
}
[/CODE]
where "word" is my textarea. I already have variables named a-z that are set correspondingly to their compressed binary strings, and my hope is that if the substring returns an "h" it will print out the binary stored in var "h". I know that this code as it is, will only print out the letter "h". Also, if i use:
[CODE]
write(eval(message.substring(rep,rep+1)));
[/CODE]
it only works as I want it to 8 out of the 26 times. If anyone else knows how to fix my code so that it can stay very short like this, I would greatly appreciate it.[/QUOTE]
Your code should be more like this...
[CODE]
<textarea id=word>asd</textarea>
<script>
hg={}
hg['a']=4
hg['s']=3
hg['d']=2
var message = document.getElementById("word").value;
for (rep = 0; rep < message.length; rep++)
{
alert(hg[message.substring(rep,rep+1)].toString(2));
}
</script>[/CODE]don't use eval unless you
fully understand what it does
0
@daveyerwinOct 24.2015 — #Solved!
[CODE][/QUOTE]
ht();
var binary = ["0010","00000","10000","00111","110","010011","00001","1001","1111","0100001000","01000011","00110","010010","1110","001","00010","0100001010","1010","1011","0101","10001","0100000","010001","0100001001","00011","0100001011"];
function format(word, formatStyle)
{
return "<" + formatStyle + ">" + word + "</" + formatStyle + ">";
}
function toBinary()
{
var message = document.getElementById("word").value;
var total = "";
for (rep = 0; rep < message.length; rep++)
{
reps = rep;
if(rep%3 === 0)
{
total = total.concat("</br>");
}
if (message.substring(rep,rep+1) === (" "))
{
total = total.concat("011");
}
else
{
total = total.concat(binary[message.charCodeAt(rep)-97]);
}
}
write(format(total + "</br>","wordspan"));
}
[/CODE]
generally, You don't have to store the binary as string ...
[CODE]
<textarea id=word>asd</textarea>
<textarea id=bin></textarea>
<script>
hg={}
hg['a']=4
hg['s']=3
hg['d']=2
var message = document.getElementById("word").value;
for (rep = 0; rep < message.length; rep++)
{
var binary = hg[message.substring(rep,rep+1)].toString(2)+" ";
var s = "000000000" + binary;
bin.value+=s.substr(s.length-5);
}
</script>
[/CODE]but in your case you may have to
because the leading zeros may
be significant ?