81 lines
1.9 KiB
HTML
81 lines
1.9 KiB
HTML
|
<!DOCTYPE html>
|
||
|
|
<html lang="en">
|
||
|
|
<head>
|
||
|
|
<meta charset="utf-8">
|
||
|
|
<title>math.js | custom separators</title>
|
||
|
|
<style>
|
||
|
|
body, input, select {
|
||
|
|
font: 11pt sans-serif;
|
||
|
|
}
|
||
|
|
input, select, th, #result {
|
||
|
|
padding: 5px 10px;
|
||
|
|
}
|
||
|
|
th {
|
||
|
|
text-align: left;
|
||
|
|
}
|
||
|
|
</style>
|
||
|
|
|
||
|
|
<script src="../../lib/browser/math.js"></script>
|
||
|
|
</head>
|
||
|
|
<body>
|
||
|
|
|
||
|
|
<p>
|
||
|
|
This code example shows how to apply custom separators for function arguments and decimal separator.
|
||
|
|
</p>
|
||
|
|
|
||
|
|
<table>
|
||
|
|
<tr>
|
||
|
|
<th>Argument separator</th>
|
||
|
|
<td>
|
||
|
|
<input id="args" type="text" value=";">
|
||
|
|
</td>
|
||
|
|
</tr>
|
||
|
|
<tr>
|
||
|
|
<th>Decimal separator</th>
|
||
|
|
<td>
|
||
|
|
<input id="decimals" type="text" value=",">
|
||
|
|
</td>
|
||
|
|
</tr>
|
||
|
|
<tr>
|
||
|
|
<th>Expression</th>
|
||
|
|
<td>
|
||
|
|
<input id="expression" type="text" value="sum(3,4; 2,1; 2,0)" />
|
||
|
|
<input id="evaluate" type="button" value="Evaluate">
|
||
|
|
</td>
|
||
|
|
</tr>
|
||
|
|
<tr>
|
||
|
|
<th>Result</th>
|
||
|
|
<td id="result"></td>
|
||
|
|
</tr>
|
||
|
|
</table>
|
||
|
|
|
||
|
|
<script>
|
||
|
|
// pointers to the input elements
|
||
|
|
const expression = document.getElementById('expression')
|
||
|
|
const evaluate = document.getElementById('evaluate')
|
||
|
|
const result = document.getElementById('result')
|
||
|
|
const args = document.getElementById('args')
|
||
|
|
const decimals = document.getElementById('decimals')
|
||
|
|
|
||
|
|
// attach event handler to the button
|
||
|
|
evaluate.onclick = function () {
|
||
|
|
// replace the custom separators in the input with the default separators
|
||
|
|
const expr = expression.value
|
||
|
|
.replace(new RegExp('\\' + decimals.value + '|\\' + args.value, 'g'), function (match) {
|
||
|
|
return match === decimals.value ? '.': ','
|
||
|
|
})
|
||
|
|
|
||
|
|
// do the actual evaluation
|
||
|
|
const res = math.evaluate(expr)
|
||
|
|
|
||
|
|
// replace the default separators in the output with custom separators
|
||
|
|
result.innerHTML = res.toString()
|
||
|
|
.replace(new RegExp(',|\\.', 'g'), function (match) {
|
||
|
|
return match === '.' ? decimals.value : args.value
|
||
|
|
})
|
||
|
|
}
|
||
|
|
</script>
|
||
|
|
|
||
|
|
|
||
|
|
</body>
|
||
|
|
</html>
|