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add character count for inputs and textareas #2162

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add character count for inputs and textareas #2162

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6e3af3e
add character count for inputs and textareas
biskwikman Jul 10, 2022
0275404
reformatted code and added validation system
biskwikman Aug 11, 2022
054438b
combine code into single block
biskwikman Aug 13, 2022
9a10111
simplify constraint
biskwikman Aug 13, 2022
b35349d
add error message to html
biskwikman Aug 16, 2022
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reformatted code and added validation system
@biskwikman
biskwikman committed Aug 11, 2022
commit 0275404fe756d9b53c65ce77af6245e29e2305e4
55 changes: 35 additions & 20 deletions js/10-base.js
View file
Original file line number Diff line number Diff line change
@@ -121,28 +121,43 @@ Liberapay.init = function() {
location.reload();
});

// Create dynamic hint based on remaining length
$('input[maxlength], textarea[maxlength]').on('focus input', function() {
if (!maxLength) {
var maxLength = $(this).attr('maxlength');
$(this).data('maxLength', maxLength);
$(this).removeAttr('maxLength');
}

var maxLength = $(this).data('maxLength');
var remainingLength = maxLength - $(this).val().length;
var helpBlock = $(this).siblings('.help-block');
// Selector for inputs and text areas with max lengths
var $maxLengthTextAreas = $('input[maxlength], textarea[maxlength]');

// Add remaining length indicator on page load
$maxLengthTextAreas.each(function() {
var $this = $(this)
var maxLength = $this.attr('maxlength');
$this.data('maxLength', maxLength);
$this.removeAttr('maxLength');

maxLength = $this.data('maxLength');
var remainingLength = maxLength - $this.val().length;
$this.after("<span class='remaining-length'>" + remainingLength + "</span>");
});

if ($(this).val().length) {
helpBlock.text(function (index, value) {
return value.slice(value.indexOf('.') + 1);
});
helpBlock.prepend(remainingLength + ' characters remaing.');
// Style remaining length indicator
$('.remaining-length').each(function() {
$(this).css({
'float': 'right',
'margin-right': '5px'
});
})

// Update remaining length dynamically
$maxLengthTextAreas.on('focus input', function() {
var $this = $(this)
var maxLength = $this.data('maxLength');
var remainingLength = maxLength - $this.val().length;
$this.siblings("span[class='remaining-length']").first().text(remainingLength);

var constraintPattern = '^[\\s\\S]{1,'+ maxLength +'}$';
var constraint = new RegExp(constraintPattern, '');

if (constraint.test($this.val())) {
$this.get(0).setCustomValidity('');
} else {
helpBlock.text(function (index, value) {
return value.slice(value.indexOf('.') + 1);
});
helpBlock.prepend('Maximum length is ' + maxLength + '.');
$this.get(0).setCustomValidity('too many characters');
}
});
};