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Update indeterminate checkbox example #491

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Merged
wbamberg merged 1 commit into from
Apr 18, 2022
Merged

Update indeterminate checkbox example #491

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55 changes: 27 additions & 28 deletions html/forms/indeterminate-example/index.html
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Original file line number Diff line number Diff line change
Expand Up @@ -3,16 +3,16 @@

<head>
<meta charset="utf-8">
<title>callback test</title>
<title>Indeterminate &lt;input type="checkbox"&gt; example</title>
</head>

<body>
<form>
<fieldset>
<legend>Complete the recipe</legend>
<div>
<input type="checkbox" id="EnchTbl" name="EnchTbl">
<label for="EnchTbl">Enchantment table</label>
<input type="checkbox" id="enchantment" name="enchantment">
<label for="enchantment">Enchantment table</label>
<ul>
<li>
<input type="checkbox" id="book" name="ingredient" value="book">
Expand All @@ -31,37 +31,36 @@
</fieldset>
</form>
<script>
var overall = document.querySelector('input[id="EnchTbl"]');
var ingredients = document.querySelectorAll('ul input');
const overall = document.querySelector('#enchantment');
const ingredients = document.querySelectorAll('ul input');

overall.addEventListener('click', function(e) {
e.preventDefault();
});
overall.addEventListener('click', (e) => {
e.preventDefault();
});

for(var i = 0; i < ingredients.length; i++) {
ingredients[i].addEventListener('click', updateDisplay);
}
for(const ingredient of ingredients) {
ingredient.addEventListener('click', updateDisplay);
}

function updateDisplay() {
var checkedCount = 0;
for(var i = 0; i < ingredients.length; i++) {
if(ingredients[i].checked) {
checkedCount++;
function updateDisplay() {
let checkedCount = 0;
for(const ingredient of ingredients) {
if(ingredient.checked) {
checkedCount++;
}
}
}

if(checkedCount === 0) {
overall.checked = false;
overall.indeterminate = false;
} else if(checkedCount === ingredients.length) {
overall.checked = true;
overall.indeterminate = false;
} else {
overall.checked = false;
overall.indeterminate = true;
if(checkedCount === 0) {
overall.checked = false;
overall.indeterminate = false;
} else if(checkedCount === ingredients.length) {
overall.checked = true;
overall.indeterminate = false;
} else {
overall.checked = false;
overall.indeterminate = true;
}
}
}

</script>
</body>

Expand Down