How to wrap selected text in a textarea?
Building off what Soufiane posted, here's the code translated to jquery with the ability to pass in the open and close tags:
function wrapText(elementID, openTag, closeTag) {
var textArea = $('#' + elementID);
var len = textArea.val().length;
var start = textArea[0].selectionStart;
var end = textArea[0].selectionEnd;
var selectedText = textArea.val().substring(start, end);
var replacement = openTag + selectedText + closeTag;
textArea.val(textArea.val().substring(0, start) + replacement + textArea.val().substring(end, len));
}
Usage would then be like so:
wrapText("myTextArea", "[#bold]", "[/bold]");
function wrapAsLink(url){
var textarea = document.getElementById("myTa");
var len = textarea.value.length;
var start = textarea.selectionStart;
var end = textarea.selectionEnd;
var sel = textarea.value.substring(start, end);
var replace = '<a href="'+url+'">' + sel + '</a>';
textarea.value = textarea.value.substring(0,start) + replace +
textarea.value.substring(end,len);
}
This function may help you to do what you want with some tweaks. I found it here.