jquery textarea autosize
$("textarea").keyup(function(e) {
while($(this).outerHeight() < this.scrollHeight + parseFloat($(this).css("borderTopWidth")) + parseFloat($(this).css("borderBottomWidth"))) {
$(this).height($(this).height()+1);
};
});jquery detect change in textarea content
$('#textareaID').bind('input propertychange', function() {
$("#yourBtnID").hide();
if(this.value.length){
$("#yourBtnID").show();
}
});Copyright © 2021 Codeinu
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