# Thread: [RESOLVED] Beginner help javascipt cm to inches

1. Registered User
Join Date
May 2013
Posts
2

## [RESOLVED] Beginner help javascipt cm to inches

Hi I am learning Javascript online and I have been set a task: User inputs cm into a text field and js returns result in cm with fractions eg 65.5 cm = 25 4/5 inches. I have worked out how to convert cm to inches and separately have
found a code snippet for converting decimals to fractions which I have changed slightly to suit my needs. Both
scripts work independent of each other, but when i combine them something I am doing is wrong. Any hints on how
to combine these scripts into one cm to inch with fractions converter? I really want to try to figure out how to do
this myself, I'm just a little lost without a teacher to get timely feedback from. Please forgive my clumsy coding

Script for fraction conversion:

Code:
```<script type="text/javascript">
Number.prototype.fraction=fraction;
function fraction(){
inches2= 0.8;
decimal= inches2;
whole = String(decimal).split('.')[0];
decimal = parseFloat("."+String(decimal).split('.')[1]);
num = "1";
for(z=0; z<String(decimal).length-2; z++){
num += "0";
}
decimal = parseInt(decimal*num);
num = parseInt(num);
for(z=2; z<decimal+1; z++){
if(decimal%z==0 && num%z==0){
decimal = decimal/z;
num = num/z;
z=2;
}
}
return ((whole==0)?"" : whole+" ")+decimal+"/"+num;
}
document.getElementById("result").innerHTML= "fraction()";
</script>
</head>

<body>
<form name="frm">
<fieldset><legend>Convert cm to Inches</legend>
<div class="divFrmElement">
<input type="text" name="T1" id='dec' /> cm  =
<input type="button" value="Convert" onclick="alert(fraction());" /></div>
<div id="result" name="result">Answer Goes Here</div>
</fieldset>
</form>```
Script for cm to inch conversion:

Code:
```<script language="javascript">

function convfromcmeters(frm) {

var cm2;
var inches2;
var cmeters2;
if(isNaN(frm.cmeters2.value)){
alert("Please enter numbers only");
return false;
}
inches2 = ((frm.cmeters2.value) * .393700787).toFixed(1);
if(inches2==0){
alert("Please enter valid values into the boxes");
}

//alert(inches2);
w = Math.floor(inches2);
k = inches2 % 1;
d = k.toFixed(1);

alert(w);
alert(d);

return false;

}

</script>```

2. Registered User
Join Date
May 2013
Posts
2
I worked on it some more and figured it out.

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