Prepend and append text input field with Javascript or jQuery

Question

I've searched and searched and can't seem to find an answer to this so please forgive me if I'm asking a question that's already been answered.

I use Tampermonkey for Chrome. It's the Chrome version of Greasemonkey. I'm a frequent user of a forum at http://forum.xda-developers.com. Whenever I go to post a reply on that forum I like to change the font. The reply editor is somewhat like the editor here on Stackoverflow-- a code editor. So when you change the font what it does is wrap font tags around your text in your editor's text field like this example below:

[FONT="Arial"]This is a reply.[/FONT]

Now what I'd like to do is use Javascript or jQuery to automatically prepend [FONT="Arial"] and append [/FONT] to the editor's text input field upon page load.

So, that being said, what Javascript or jQuery would I use to automatically prepend and append that text upon page load?

indubitablee · Accepted Answer · 2015-09-23 19:58:48Z

1

is something like this what you want?

$(document).ready(function() {
  var originalData = $('textarea').val();
  $('textarea').val('[FONT="Arial"]' + originalData + '[/FONT]');
});

/*unnecessary css, just for asthetics of code snippet*/
textarea{
  width: 300px;
  height: 100px;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<textarea>Some text that is already in here</textarea>

UPDATE WITH VANILLA JAVASCRIPT:

document.getElementById('vB_Editor_001_popup_fontname').setAttribute("onclick", "myWrappingFunction()");

function myWrappingFunction() {
  var originalData = document.getElementById('vB_Editor_001_popup_fontname').value;
  document.getElementById('vB_Editor_001_popup_fontname').value = '[FONT="Arial"]' + originalData + '[/FONT]';                        
}

/*unnecessary css, just for asthetics of code snippet*/
textarea{
  width: 300px;
  height: 100px;
}

<textarea id="vB_Editor_001_popup_fontname">I am the nextarea with id vB_Editor_001_popup_fontname</textarea>

edited Sep 23, 2015 at 19:58

answered Sep 23, 2015 at 17:13

indubitablee

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13 Comments

Mister Pyrrhuloxia Over a year ago

Yes but that seems to replace all the text in the text area. I'd like to leave the text that's already present in the text area and just prepend and append that text around the existing text. Does that make sense?

Mister Pyrrhuloxia Over a year ago

Yes!! That did it! Thank you so much!

Mister Pyrrhuloxia Over a year ago

Do you know how to change from $(document).ready(function() { to make the javascript only happen when clicking an element like this? id="vB_Editor_001_popup_fontname"

indubitablee Over a year ago

@MisterPyrrhuloxia: yup, updated answer above with just vanilla js

Mister Pyrrhuloxia Over a year ago

So I think that I don't want the prepend/append event to happen till after I click on the element id "vB_Editor_001_popup_fontname". I used your vanilla javascript above and it didn't seem to do that. Instead, no prepending or appending happens when I click on the vB_Editor_001_popup_fontname element.

|

Robert · Accepted Answer · 2015-09-23 17:13:39Z

0

you can inject jquery to the page (if it's not already part of the page) and use

$(document).ready(function(){
    $('#textAreaID').val('[FONT="Arial"]This is a reply.[/FONT]');
});

answered Sep 23, 2015 at 17:13

Robert

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