使用中键触发 onclick 事件

You can use

event.button

to identify which mouse button was clicked.

Returns an integer value indicating the button that changed state.

• 0 for standard 'click', usually left button
• 1 for middle button, usually wheel-click
• 2 for right button, usually right-click

Note that this convention is not followed in Internet Explorer: see QuirksMode for details.

The order of buttons may be different depending on how the pointing device has been configured.

Also read

Which mouse button has been clicked?

There are two properties for finding out which mouse button has been clicked: which and button. Please note that these properties don’t always work on a click event. To safely detect a mouse button you have to use the mousedown or mouseup events.

document.getElementById('foo').addEventListener('click', function(e) {
console.log(e.button);
e.preventDefault();
});

<a id="foo" href="http://example.com">middle click me</a>

jQuery provides a .which attribute on the event that gives the click button id from left to right as 1, 2, 3. In this case you want 2.

Usage:

$("#foo").live('click', function(e) {
if( e.which == 2 ) {
alert("middle button");
}
});

Adamantium's answer will also work but you need to watch out for IE as he notes:

$("#foo").live('click', function(e) {
if((!$.browser.msie && e.button == 1) || ($.browser.msie && e.button == 2)) {
alert("middle button");
}
});

Also remember the .button attribute is 0-indexed not 1-indexed like .which.

EDIT

This answer has been deprecated and doesn't work on Chrome. You will most probably end up using the auxclick event, but please refer to other answers below.

/EDIT

beggs' answer is correct, but it sounds like you want to prevent the default action of the middle click. In which case, include the following

$("#foo").on('click', function(e) {
if (e.which == 2) {
e.preventDefault();
alert("middle button");
}
});

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<a id="foo" href="http://example.com">middle click me</a>

preventDefault() will stop the default action of the event.

The proper method is to use .on, as .live has been deprecated and then removed from jQuery:

$("#foo").on('click', function(e) {
if( e.which == 2 ) {
e.preventDefault();
alert("middle button");
}
});

Or if you want the "live" like feel and #foo is not on your page on document start:

$(document).on('click', '#foo', function(e) {
if( e.which == 2 ) {
e.preventDefault();
alert("middle button");
}
});

original answer

I know I'm late for the party, but for those still having problems with handling the middle click, check if you delegate the event. In case of delegation, the click event does not fire. Compare:

This works for middle clicks:

$('a').on('click', function(){
console.log('middle click');
});

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<a href="http://example.com">middle click me</a>

This doesn't work for middle clicks:

$('div').on('click', 'a', function(){
alert('middle click');
});

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div>
<a href="http://example.com">middle click here</a>
</div>

If you still need to track the middle click using event delegation, the only way around as stated in the corresponding jQuery ticket, is to use mousedown or mouseup instead. Like so:

This works for delegated middle clicks:

$('div').on('mouseup', 'a', function(){
console.log('middle click');
});

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div>
<a href="http://example.com">middle click me</a>
</div>

See it online here.

This question is a bit old, but i found a solution:

$(window).on('mousedown', function(e) {
if( e.which == 2 ) {
e.preventDefault();
}
});

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<a href="http://example.com">middle click me</a>

Chrome not fire "click" event for the mouse wheel

Work in FF and Chrome

I usually hate when people offer alternatives instead of solutions, but since solutions have already been provided I'm going to break my own rule.

Websites where the middle-click feature is overridden tend to really, really bug me. I'm usually middle-clicking because I want to open the new content in a new tab while having an unobstructed view of the current content. Any time you can leave the middle-click functionality alone and make the relevant content available through the HREF attribute of your clicked element, I strongly believe that's what you should do.

For the middle-click / mouse-wheel button to be detected, you have to use the event auxclick. E.g:

<a href="https://example.com" onauxclick="func()" id="myLink"></a>

Then in your script file

function func(e) {
if (e.button == 1) {
alert("middle button clicked")
}
}

If you want to do it from JavaScript (without using the HTML attribute onauxclick), then you addEventListener to the element:

let myLink = document.getElementById('myLink')
myLink.addEventListener('auxclick', function(e) {
if (e.button == 1) {
alert("middle button clicked")
}
})

<a id="myLink" href="http://example.com">middle click me</a>

Checkout the mdn page about the auxclick event here.