60 lines
1.7 KiB
JavaScript
60 lines
1.7 KiB
JavaScript
// Count and Display Remaining Characters
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(function ($) {
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'use strict';
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$.fn.countRemainingChars = function (options) {
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var settings = $.extend({
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// These are the defaults.
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charsMaxLimit: 100,
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charsWarnRemaining: 5,
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blockInputAtMaxLimit: false
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}, options),
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$taFld = this,
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$countFld = $('#' + settings.countFld).text(settings.charsMaxLimit),
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charsRemainingFn = function (charsLength) {
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var charsRemaining = settings.charsMaxLimit - charsLength;
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$countFld.text(charsRemaining);
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$countFld.toggleClass('chars-warn-remaining-pf', charsRemaining <= settings.charsWarnRemaining);
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if (charsRemaining < 0) {
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$taFld.trigger("overCharsMaxLimitEvent", $taFld.attr('id'));
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} else {
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$taFld.trigger("underCharsMaxLimitEvent", $taFld.attr('id'));
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}
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};
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this.on('paste', function (event) {
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setTimeout(function () {
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var charsLength = $taFld.val().length, maxTxt;
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if (settings.blockInputAtMaxLimit && charsLength > settings.charsMaxLimit) {
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maxTxt = $taFld.val();
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maxTxt = maxTxt.substring(0, settings.charsMaxLimit);
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$taFld.val(maxTxt);
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charsLength = $taFld.val().length;
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}
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charsRemainingFn(charsLength);
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}, 100);
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});
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this.keyup(function (event) {
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charsRemainingFn($taFld.val().length);
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});
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this.keydown(function (event) {
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var charsLength = $taFld.val().length;
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if (settings.blockInputAtMaxLimit && charsLength >= settings.charsMaxLimit) {
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// Except backspace
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if (event.keyCode !== 8) {
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event.preventDefault();
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}
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}
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});
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return this;
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};
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}(jQuery));
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