$(document).ready(function(){    $('#TextBoxId').keypress(function(e){      if(e.keyCode==13)      $('#linkadd').click();    });});

It is, ^yeah, 2021. And I believe this still holds true.

DO NOT USE keypress

1. keypress event is not triggered when the user presses a key that does not produce any character, such as Tab, Caps Lock, Delete, Backspace, Escape, left & right Shift, function keys(F1 - F12).

keypress event _{Mozilla Developer Network}

The keypress event is fired when a key is pressed down, and that key normally produces a character value. Use input instead.

2. It has been deprecated.

keypress event _{UI Events (W3C working draft published on November 8, 2018.)}

• NOTE | The keypress event is traditionally associated with detecting a character value rather than a physical key, and might not be available on all keys in some configurations.
• WARNING | The keypress event type is defined in this specification for reference and completeness, but this specification deprecates the use of this event type. When in editing contexts, authors can subscribe to the beforeinput event instead.

DO NOT USE KeyboardEvent.keyCode

1. It has been deprecated.

KeyboardEvent.keyCode _{Mozilla Developer Network}

Deprecated | This feature is no longer recommended. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes. Avoid using it, and update existing code if possible; see the compatibility table at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.

What should I use then? (The good practice)

// Make sure this code gets executed after the DOM is loaded.document.querySelector("#addLinks").addEventListener("keyup", event => {    if(event.key !== "Enter") return; // Use `.key` instead.    document.querySelector("#linkadd").click(); // Things you want to do.    event.preventDefault(); // No need to `return false;`.});

There are a js-free solution.

Set type=submit to the button you'd like to be default and type=button to other buttons. Now in the form below you can hit Enter in any input fields, and the Render button will work (despite the fact it is the second button in the form).

Example:

    <button id='close_renderer_button' class='btn btn-success'            title='Перейти к редактированию программы'            type=button>      <span class='glyphicon glyphicon-edit'> </span> Edit program    </button>    <button id='render_button' class='btn btn-primary'            title='Построить фрактал'            type=submit            formaction='javascript:alert("Bingo!");'>      <span class='glyphicon glyphicon-send'> </span> Render    </button>

Tested in FF24 and Chrome 35 (formaction is html5 feature, but type is not).