Not able to call a JavaScript function from PHP code?
Question
How do I call a JavaScript function from href tag in html? I've created a few tabs and when a user clicks on one of them the href along with JavaScript function should get called.
<?php if($order == 1){ ?>
<li class="cat-one">
<a href="javascript:void(0)" onclick="loadProducts(<?php echo $categoryId ?>)">
<?php echo $categoryName ?>
</a>
</li>
<?php } ?>
This is my JavaScript:
function loadProducts($categoryId)
{
alert("Hello World!");
return false;
}
Why doesn't the alert trigger in my function? I am running 2 jQueries on the same page.
6 answers
solution1
2 ACCPTED 2011-11-16 12:03:23
如果您尝试这样做怎么办：
<a href="#" onclick="loadProducts(<?php echo $categoryId ?>); return false;">
solution2
0 2011-11-16 12:02:40
Try:
<script type="javascript" >
function loadProducts(categoryId)
{
alert("Hello World!" + categoryId);
return false;
}
</script>
And also:
<a href="#" onclick="loadProducts(<?php echo $categoryId ?>); return false;" >
<?php echo $categoryName ?>
</a>
solution3
0 2011-11-16 12:09:10
I just checked the JavaScript, you make a mistake while declaring script tag, the correct code is below
<script type="text/javascript" >
function loadProducts($categoryId)
{
alert("Hello World!");
return false;
}
</script>
solution4
0 2011-11-16 12:11:15
From your script above I really don't see nothing wrong with the JavaScript. Try debugging your PHP first to see if the expected value like ($categoryId) is exactly what you expect to be.
Your are missing something also from the script tag
<script type="text/javascript">
// Your script goes here...
</script>
solution5
0 2011-11-16 17:02:03
May be your php script has some errors, Try this example also.
<html>
<body>
<script type= "text/javascript">
function loadProducts(catid){
alert(""Hello World!"+catid);
return false;
}
</script>
<?php if($order == 1){ ?>
<li class="cat-one">
<a href="javascript:void(0)" onclick="loadProducts(<?php echo $categoryId ?>)"><?php echo $categoryName ?> </a>
</li>
</body>
</html>
solution6
0 2011-11-18 21:24:08
From what I can tell without actually running this code, you can fix a few semi-colons on lines 3 and 4, change the href, and put the parameter for loadProducts in quotes. Try this:
<?php if($order == 1){ ?>
<li class="cat-one">
<a href="#" onclick="loadProducts('<?php echo $categoryId; ?>')">
<?php echo $categoryName; ?>
</a>
</li>
<?php } ?>
Let me know if it works out for you.
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.