jquery.charCount.js
1.42 KB
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(function($) {
$.fn.charCount = function(options){
// default configuration properties
var defaults = {
allowed: 140,
warning: 25,
css: 'counter',
counterElement: 'span',
cssWarning: 'warning',
cssExceeded: 'exceeded',
counterText: '',
counterExceedText: '',
counterOkText: '',
counterSuffix: 'letter'
};
var options = $.extend(defaults, options);
function calculate(obj){
var count = $(obj).val().length;
var available = options.allowed - count;
if(available <= options.warning && available >= 0){
$(obj).next().addClass(options.cssWarning);
} else {
$(obj).next().removeClass(options.cssWarning);
}
if(available < 0){
$(obj).next().addClass(options.cssExceeded);
options.counterText = options.counterExceedText;
} else {
$(obj).next().removeClass(options.cssExceeded);
options.counterText = options.counterOkText;
}
$(obj).next().html('<span class="csscountertext">' + options.counterText + '</span>' + Math.abs(available) + '<span class="csscountertext">' + options.counterSuffix + '</span>');
};
this.each(function() {
$(this).after('<'+ options.counterElement +' class="' + options.css + '">'+ options.counterText + options.counterSuffix + '</'+ options.counterElement +'>');
calculate(this);
$(this).keyup(function(){calculate(this)});
$(this).change(function(){calculate(this)});
});
};
})(jQuery);