PHP to Javascript - Convert 2 functions and small piece of code.
$10-30 USD
Completed
Posted over 6 years ago
$10-30 USD
Paid on delivery
I have a function for standard deviation and one for simple moving average, doing calculations in php.
I need the javascript equivalent. Obviously function need to be written differently.
My desire is for the same output in Javascript, like php gives.
This is the PHP Code, along with a Javascript function to Display calculated values.
The project task is to produce code that will the calculations. Doesn't matter to me how (with how many function ect.), need same result.
Please note, in the example, php is marked with ///CODE TO MAKE IN JS BEGIN, ///CODE TO MAKE IN JS END.
Bid only if you are able to do it, and do not require any more explanations. Should be straight forward for somebody with experience in JS.
<?php
$period = 7;
$recent = array(13755,13720.9,13738.5,13792.7,13828,13813.1,13854.4);
///CODE TO MAKE IN JS BEGIN
function sd_square($x, $mean) { return pow($x - $mean,2); }
function sma($data, $range)
{
$sum = array_sum(array_slice($data, 0, $range));
$result = array($range - 1 => $sum / $range);
for ($i = $range, $n = count($data); $i != $n; ++$i) {
$result[$i] = $result[$i - 1] + ($data[$i] - $data[$i - $range]) / $range;
}
return $result;
}
$stdev = sqrt(array_sum(array_map("sd_square", $recent, array_fill(0,count($recent), (array_sum($recent) / count($recent)) ) ) ) / (count($recent)-1));$sma = sma($recent,$period);
///CODE TO MAKE IN JS END
?>
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>Untitled Document</title>
<script type="text/javascript">
var recent = [login to view URL]('<?php echo json_encode($recent); ?>');
///CODE TO MADE IN JS BEGIN
///////PROJECT TASK HERE
///CODE TO MAKE IN JS END
var stdev = 13786.085714286;//HARDCODED FOR DEMO , EXPECTING YOUR CODE TO CALCULATE
var sma = 49.458852546719; //HARDCODED FOR DEMO , EXPECTING YOUR CODE TO CALCULATE
function PopulateJs()
{
[login to view URL]("jsstdev").innerHTML = stdev;
[login to view URL]("jssma").innerHTML = sma;
}
</script>
</head>
<body>
<table>
<tr><th colspan="2">PHP</th><th colspan="2">JS</th></tr>
<tr><td>Dev:</td><td><?php echo $sma[($period-1)];?></td><td>Dev:</td><td id="jsstdev"></td></tr>
<tr><td>Sma:</td><td><?php echo $stdev;?></td><td>Sma:</td><td id="jssma"></td></tr>
</table>
<button onclick="PopulateJs();">PopulateJS</button>
</body>
</html>
Project ID: 16082677
About the project
11 proposals
Remote project
Active 6 yrs ago
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About the client
Sofia, Bulgaria
21
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Member since Mar 17, 2009
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