Hi I have a small website, which keeps reloading after a click event. How can I prevent this?
PS: I'm only allowed to use pure JS.
HTML
Cookie Clicker
</head>
<body>
<header>
<h1>Points: </h1>
<span id="score"></span>
</header>
<div class="container">
<div>
<a href="" onclick="addPoints(1)">
<img src="assets/graphics/Friis.png" />
</a>
</div>
</div>
<script src="assets/scripts/cookieClicker.js"></script>
</body>
</html>
JS
var points = 0,
score = document.getElementById("score");
function addPoints(increase) {
console.log('hit');
points += increase;
score.innerHTML = '' + points;
};
Hi I have a small website, which keeps reloading after a click event. How can I prevent this?
PS: I'm only allowed to use pure JS.
HTML
Cookie Clicker
</head>
<body>
<header>
<h1>Points: </h1>
<span id="score"></span>
</header>
<div class="container">
<div>
<a href="" onclick="addPoints(1)">
<img src="assets/graphics/Friis.png" />
</a>
</div>
</div>
<script src="assets/scripts/cookieClicker.js"></script>
</body>
</html>
JS
var points = 0,
score = document.getElementById("score");
function addPoints(increase) {
console.log('hit');
points += increase;
score.innerHTML = '' + points;
};
- 1 possible duplicate of How to prevent reload with onclick without "#"? – JJJ Commented Sep 1, 2015 at 8:20
-
1
Change
hreftohref="javascript:;"or pass theeventand callpreventDefault()– haim770 Commented Sep 1, 2015 at 8:21
4 Answers
Reset to default 6You can modify only your html and it works:
<a href="javascript:void(0);" onclick="addPoints(1)">
Some people make this:
<a href="#" onclick="addPoints(1)">
But this is an anchor that scrolls your page to top. If you need to make by javascript, search about event preventDefault.
EDIT
Read about void javascript function:
https://developer.mozilla/en-US/docs/Web/JavaScript/Reference/Operators/void
It's good to understand behaviour.
update your code to:
<a href="" onclick="addPoints(1);return false">
or
<a href="" onclick="return addPoints(1)">
and let your function addPoints return false. Upside of this is that you can actually let the href link to a page in case addPoints reaches a certain level for instance. If addPoints returns true the link will take the user to that page, return false will keep the user on the current page.
Instead of using onClick you can just change the href to run the function. For example:
<a href="javascript:addPoints(1);">
that happens because you code contain
<a href="" onclick="addPoints(1)"> // These Can Reload Same Page
<a href="#" onclick="addPoints(1)"> // Modify upper code to these code