Quelle test_input_range_rounding.html Sprache: HTML

products/Sources/formale Sprachen/C/Firefox/dom/html/test/forms/test_input_range_rounding.html

<!DOCTYPE HTML>
<html>

<head>
  <title>Test key events for range</title>
  <script src="/tests/SimpleTest/SimpleTest.js"></script>
  <script src="/tests/SimpleTest/EventUtils.js"></script>
  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
  <meta charset="UTF-8">
</head>
<body>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=853525">Mozilla Bug 853525</a>
<p id="display"></p>
<div id="content">
  <input id=range type=range value=0 step=0.01 max=1>
</div>
<pre id="test">
<script type="application/javascript">

/**
* Test for Bug 853525
* This test checks that when <input type=range> has fractional step values,
* the values that a content author will see in their script will not have
* ugly rounding errors.
**/
SimpleTest.waitForExplicitFinish();
SimpleTest.waitForFocus(function() {
  test();
  SimpleTest.finish();
});

/**
* We can _NOT_ generate these values by looping and simply incrementing a
* variable by 0.01 and stringifying it, since we'll end up with strings like
* "0.060000000000000005" due to the inability of binary floating point numbers
* to accurately represent decimal values.
*/
var stepVals = [
  "0",   "0.01", "0.02", "0.03", "0.04", "0.05", "0.06", "0.07", "0.08", "0.09",
  "0.1", "0.11", "0.12", "0.13", "0.14", "0.15", "0.16", "0.17", "0.18", "0.19",
  "0.2", "0.21", "0.22", "0.23", "0.24", "0.25", "0.26", "0.27", "0.28", "0.29",
  "0.3", "0.31", "0.32", "0.33", "0.34", "0.35", "0.36", "0.37", "0.38", "0.39",
  "0.4", "0.41", "0.42", "0.43", "0.44", "0.45", "0.46", "0.47", "0.48", "0.49",
  "0.5", "0.51", "0.52", "0.53", "0.54", "0.55", "0.56", "0.57", "0.58", "0.59",
  "0.6", "0.61", "0.62", "0.63", "0.64", "0.65", "0.66", "0.67", "0.68", "0.69",
  "0.7", "0.71", "0.72", "0.73", "0.74", "0.75", "0.76", "0.77", "0.78", "0.79",
  "0.8", "0.81", "0.82", "0.83", "0.84", "0.85", "0.86", "0.87", "0.88", "0.89",
  "0.9", "0.91", "0.92", "0.93", "0.94", "0.95", "0.96", "0.97", "0.98", "0.99",
  "1"
];

var pgUpDnVals = [
  "0", "0.1", "0.2", "0.3", "0.4", "0.5", "0.6", "0.7", "0.8", "0.9", "1"
];

function test() {
  var elem = document.getElementById("range");

  elem.focus();

  for (var i = 1; i < pgUpDnVals.length; ++i) {
    synthesizeKey("KEY_PageUp");
    is(elem.value, pgUpDnVals[i], "Test KEY_PageUp");
    is(elem.validity.valid, true, "Check element is valid for value " + pgUpDnVals[i]);
  }

  for (var i = pgUpDnVals.length - 2; i >= 0; --i) {
    synthesizeKey("KEY_PageDown");
    is(elem.value, pgUpDnVals[i], "Test KEY_PageDown");
    is(elem.validity.valid, true, "Check element is valid for value " + pgUpDnVals[i]);
  }

  for (var i = 1; i < stepVals.length; ++i) {
    synthesizeKey("KEY_ArrowUp");
    is(elem.value, stepVals[i], "Test KEY_ArrowUp");
    is(elem.validity.valid, true, "Check element is valid for value " + stepVals[i]);
  }

  for (var i = stepVals.length - 2; i >= 0; --i) {
    synthesizeKey("KEY_ArrowDown");
    is(elem.value, stepVals[i], "Test KEY_ArrowDown");
    is(elem.validity.valid, true, "Check element is valid for value " + stepVals[i]);
  }

  for (var i = 1; i < stepVals.length; ++i) {
    elem.stepUp();
    is(elem.value, stepVals[i], "Test stepUp()");
    is(elem.validity.valid, true, "Check element is valid for value " + stepVals[i]);
  }

  for (var i = stepVals.length - 2; i >= 0; --i) {
    elem.stepDown();
    is(elem.value, stepVals[i], "Test stepDown()");
    is(elem.validity.valid, true, "Check element is valid for value " + stepVals[i]);
  }
}

</script>
</pre>
</body>
</html>

Messung V0.5

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