包括 href 和 onclick 到 HTML<a>标签</a>

Question

If I have this element:

<a href="www.mysite.com" onClick="javascript.function();">Item</a>

How can I make both href and onClick work, preferably with onClick running first?

Answer 1

You already have what you need, with a minor syntax change:

<a href="www.mysite.com" onclick="return theFunction();">Item</a>

<script type="text/javascript">
    function theFunction () {
        // return true or false, depending on whether you want to allow the `href` property to follow through or not
    }
</script>

The default behavior of the <a> tag's onclick and href properties is to execute the onclick , then follow the href as long as the onclick doesn't return false , canceling the event (or the event hasn't been prevented)

Answer 2

Use jQuery . You need to capture the click event and then go on to the website.

 $("#myHref").on('click', function() { alert("inside onclick"); window.location = "http://www.google.com"; });

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <a href="#" id="myHref">Click me</a>

Answer 3

To achieve this use following html:

<a href="www.mysite.com" onclick="make(event)">Item</a>

<script>
    function make(e) {
        // ...  your function code
        // e.preventDefault();   // use this to NOT go to href site
    }
</script>

Here is working example .

Answer 4

No jQuery needed.

Some people say using onclick is bad practice...

This example uses pure browser javascript. By default, it appears that the click handler will evaluate before the navigation, so you can cancel the navigation and do your own if you wish.

<a id="myButton" href="http://google.com">Click me!</a>
<script>
    window.addEventListener("load", () => {
        document.querySelector("#myButton").addEventListener("click", e => {
            alert("Clicked!");
            // Can also cancel the event and manually navigate
            // e.preventDefault();
            // window.location = e.target.href;
        });
    });
</script>

Answer 5

Use a <button> instead. In general, you should only use a hyperlink for navigation to a real URL.

We can style a button to look like an anchor element.

From https://developer.mozilla.org/en-US/docs/Web/HTML/Element/a#onclick_events

Anchor elements are often abused as fake buttons by setting their href to # or javascript:void(0) to prevent the page from refreshing, then listening for their click events.

These bogus href values cause unexpected behavior when copying/dragging links, opening links in a new tab/window, bookmarking, or when JavaScript is loading, errors, or is disabled. They also convey incorrect semantics to assistive technologies, like screen readers.

Answer 6

Use ng-click in place of onclick . and its as simple as that:

<a href="www.mysite.com" ng-click="return theFunction();">Item</a>

<script type="text/javascript">
function theFunction () {
    // return true or false, depending on whether you want to allow 
    // the`href` property to follow through or not
 }
</script>