Disable the enter key Chrome extension

I want to disable the enter key in Chrome extension using JavaScript for a particular page. For example: On a login page, instead of pressing enter to login the user should click on the Log in button.

I am using message passing in my Chrome extension.

document.addEventListener("k开发者_C百科eydown", function(e) {
    var keys = e.which; 
  chrome.extension.sendRequest({method: "getHTML", data: keys});
});

Just call preventDefault() on your handler to consume the event and stop it's propagation.

To make this work on certain pages (not in every one), you can create 2 content scripts: one with the enter prevention function and another with the rest of the functionality.

Then you would include them on the manifest like this:

{
  "name": "My extension",
  ...
  "content_scripts": [
    {
      "matches": ["http://*/*"],
      "js": ["common_content_script"]
    },
    {
      "matches": ["http://page_i_want_to_prevent_enter"],
      "js" : ["enter_prevention_script"]
    }
  ],
  ...
}