81 lines
2.9 KiB
HTML
81 lines
2.9 KiB
HTML
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
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"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en">
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<!--
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@package Server-Side Scripting - PHP
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@created 13th November 2021
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@author Llewellyn van der Merwe <https://git.vdm.dev/Llewellyn>
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@git WEBD-310-45 <https://git.vdm.dev/Llewellyn/WEBD-310-45>
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@license GNU General Public License version 2 or later; see LICENSE.txt
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@week3
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Basic form that is posting to Paycheck.php (see description there)
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-->
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<head>
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<title>Paycheck</title>
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<meta http-equiv="content-type"
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content="text/html; charset=utf-8"/>
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</head>
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<body>
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<h2 style="text-align:center">Paycheck Form</h2>
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<form id="calculate" name="calculate" action="Paycheck.php" method="post" onSubmit="return checkForm();">
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<div>Number of Hours (per/week):
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<input type="text" name="hours"/>
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<span id="hour-error" style="color: red; visibility:hidden;">only integer values allowed</span>
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</div>
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<br/>
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<div>Hourly Wage:
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<input type="text" name="wage" value="120"/>
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<span id="wage-error" style="color: red; visibility:hidden;">only integer values allowed</span>
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</div>
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<br/>
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<div>
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<input type="reset" value="Clear Form" onclick="resetForm();"/>
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<input type="submit" name="Submit" value="Calculate"/></div>
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</form>
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<script type="text/javascript">
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// reset or hide errors
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function resetForm() {
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document.getElementById('hour-error').style.visibility = "hidden";
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document.getElementById('wage-error').style.visibility = "hidden";
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}
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// validate data (basic)
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function checkForm() {
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// convert the form to an object
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let formData = new FormData(document.getElementById("calculate"));
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// post the form
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let allowed = true;
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// we just validate int here
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if (!isInt(formData.get("hours"))) {
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document.getElementById('hour-error').style.visibility = "visible";
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// show the wrong value in console
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console.log(formData.get("hours"));
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// stop the posting
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allowed = false;
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}
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if (!isInt(formData.get("wage"))) {
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document.getElementById('wage-error').style.visibility = "visible";
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// show the wrong value in console
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console.log(formData.get("wage"));
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// stop the posting
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allowed = false;
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}
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// stop the posting if not valid
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return allowed;
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// to test server side validation
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// return true;
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}
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// Thanks to https://stackoverflow.com/a/14794066/1429677
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function isInt(value) {
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return !isNaN(value) && (function (x) {
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return (x | 0) === x;
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})(parseFloat(value))
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}
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</script>
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</body>
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</html>
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