CodeMirror: Set Focus at End of Line

By  on  

CodeMirror is a WYSIWYG-like editor that allows for rich text editing on a small scale, oftentimes used to allow Markdown editing, much like ReviewBoard uses it for.  One problem I've found, however, is that calling a CodeMirror instance's focus method put the cursor at the beginning of the input, which is annoying when there is input in the field.  In theory you'd always want to put the cursor at the end so that the user can continue adding to the text that's already there.

Here's a snippet that will set the cursor to the end of existing input:

cmInstance.focus();
// Set the cursor at the end of existing content
cmInstance.setCursor(cmInstance.lineCount(), 0);

You would think that there would be a method which would accomplish this task, or even have focus set the cursor to the end of input by default if the instance has existing text.  Anyways, this is the code that will put the cursor at the end of your CodeMirror input instance!

Recent Features

  • By
    I’m an Impostor

    This is the hardest thing I've ever had to write, much less admit to myself.  I've written resignation letters from jobs I've loved, I've ended relationships, I've failed at a host of tasks, and let myself down in my life.  All of those feelings were very...

  • By
    Facebook Open Graph META Tags

    It's no secret that Facebook has become a major traffic driver for all types of websites.  Nowadays even large corporations steer consumers toward their Facebook pages instead of the corporate websites directly.  And of course there are Facebook "Like" and "Recommend" widgets on every website.  One...

Incredible Demos

  • By
    Implementing Basic and Fancy Show/Hide in MooTools 1.2

    One of the great parts of MooTools is that the library itself allows for maximum flexibility within its provided classes. You can see evidence of this in the "Class" class' implement method. Using the implement method, you can add your own methods to...

  • By
    PHP Woot Checker – Tech, Wine, and Shirt Woot

    If you haven't heard of Woot.com, you've been living under a rock. For those who have been under the proverbial rock, here's the plot: Every day, Woot sells one product. Once the item is sold out, no more items are available for purchase. You don't know how many...

Discussion

  1. Harika

    HI David,

    I was able to set cursor at end of the code mirror lines on tab with your code, but after that i want to get out of code mirror window and should move focus to next button.With above code, not able to get focus out of code mirror, can you suggest a way to do that? Thanks.

    This is how i am writing it, also set tabindex=0 for next button available.

     _editor.setOption('extraKeys', {
            Tab(cm) {
              cm.focus();
              cm.setCursor(cm.lineCount(), 0);
            },
          });

Wrap your code in <pre class="{language}"></pre> tags, link to a GitHub gist, JSFiddle fiddle, or CodePen pen to embed!