Passing var on onload function - javascript

Hie all,
Here is my code part.page1.php
<?php
$ID="1,2,3,4,";
$ID1=json_encode($ID);
?>
<html>
<script src="page.js" type="text/javascript"></script>
<body onload="<?php echo'add('.$ID1.')';?>">
</body>
</html>
//page.js code
function add(oi1)
{
alert(oi1);
}
It gives me syntax error near add(..
I want to pass "1,2,3,4,"; on add function.


Try:
<body onload="add('<?php echo $ID1?>')">
It's often better writing like this instead of your example.

Related

Set value using elementbyid in Javascript

I am trying to set a value with Javascript using getElementById but it is not working. Can anyone see what I'm doing wrong? Sorry if this is basic question. Have not used JS in a long while.
<html>
<head>
<script>
function setSymbol(sym) {
//alert("hi");
document.getElementById("personName")=sym;
}
</script>
</head>
<body onload="setName('John Ford')">
<script type="text/javascript">
new awesome.widget({
"name": "<span id = personName>",
"locale": "en"
});
</script>
</body>
</html>
Thanks for any suggestions.

You are looking for .innerHTML or better yet .textContent:
document.getElementById('personName').textContent = sym;

Trouble calling javascript function from php

I am trying to do the following:
<html>
<script type="text/javascript" src="jquery.js"></script>
<a id="random">before</a>
<script>
function test(a)
{
document.getElementById('random').innerHTML="after with variable passed in";
}
function test2()
{
document.getElementById('random').innerHTML="after without variable passed in";
}
</script>
<?php $sample = "hi"; ?>
<button onClick="test(<?php echo $sample;?>)">withVariable</button>
<button onClick="test2()">withoutVariable</button>
</html>
If I click the "withoutVariable" button, the function test2() gets called perfectly because no variables are passed in to it. However, if I click the "withVariable" button the function test(a) is never being called for some reason. Any ideas what I'm doing wrong here?

Since $sample is a string literal you need to enclose it with ''
<button onClick="test('<?php echo $sample;?>')">withVariable</button>

If you're passing a string variable, then you need to add quotes around the value, like so:
<button onClick="test('<?php echo $sample;?>')">withVariable</button>

Script attribute not set to javascript function value

I am trying to set the attribute of the script tag for a infomous word cloud as follows:
<head>
function getParameterByName(name)
{
...
}
</head>
<body>
<script type="text/javascript"
async data-infomous-id="javascript:getParameterByName('wcid');"
id="embed"
src="http://www.infomous.com/client2/?width=800&height=600&maxWords=40">
</script>
</body>
But the javascript function is never executed. How can I set the data-infomous-id dynamically?

This should do this trick:
jsFiddle
var elem = document.getElementById('embed');
elem.setAttribute('data-infomous-id', getParameterByName('wcid'));

How to call evaluateJavaScript() function from Qt?

I am not able to call a javascript function from QT .
I am using the below code
QT code :
QWebFrame *frame = m_d->m_webView->page()->mainFrame();
frame->evaluateJavaScript("displayhello()");
Here `displayhello()` is the `Javascript` function defined in the HTML file.
HTML code :
<html>
<head>
<script type="text/javascript" src="" />
<script type="text/javascript">
function displaymessage(str)
{
alert(str);
}
function displayhello()
{
alert("Hello");
}
</script>
</head>
<body>
<form>
<input type="button" value="Click me!" onClick="displayhello()">
</form>
</body>
</html>
Can anyone give me any pointers why the Javascript function is not getting called.

I know this post is old but in case someone has the same:
Always check Dev Tools to see what the JavaScript console tells you.
You can enable devtools by adding this line tou your QT main function
QWebSettings::globalSettings()->setAttribute(QWebSettings::DeveloperExtrasEnabled, true);
Now by right clicking->inspect, console, you would have seen the JS interpret error.

You should have lower case 'c' in 'onclick':
<input type="button" value="Click me!" onclick="displayhello()">

QVariant holdInformation = map->page()->mainFrame()->evaluateJavaScript (QString ("displayhello ()"));
Replace map by your desired class name.
Also, try using onload.
<body onload = "displayhello()" topmargin = "0" leftmargin = "0">

Pass Variable To Auto Complete JavaScript

I have this basic auto complete JavaScript that works well, but you need to hard code the web page. What I'm trying to do is send the "Autocomplete" variable data to the page using a Perl script
The working JavaScript code looks like this:
var CustomArray = new Array('an apple','alligator','elephant','pear','kingbird',
'kingbolt','kingcraft','kingcup','kingdom','kingfisher',
'kingpin','SML');
Now the new code is:
var CustomArray=new Array(Autocomplete);
And the Perl script is sending back the data to the browser looking like this:
var Autocomplete = 'an apple','alligator','elephant','pear','kingbird',
'kingbolt','kingcraft','kingcup','kingdom','kingfish er','kingpin','SML'
I also tried
var Autocomplete = ['an apple','alligator','elephant','pear','kingbird',
'kingbolt','kingcraft','kingcup','kingdom','kingfisher',
'kingpin','SML']
But I get: 'an apple','alligator','elephant','pear','kingbird','kingbolt','kingcraft','kingcup','kingdom','kingfish er','kingpin','SML' All as one string in the auto complete.
I cant seem to get it to work right. Full HTML code is below.
<html>
<head>
<script language="javascript" type="text/javascript" src="http://www.comicinvasion.com/Code/Java/Autocomplete/Autocomplete.js"></script>
<script language="javascript" type="text/javascript" src="http://www.comicinvasion.com/Code/Java/Autocomplete/Common.js"></script>
<script language="JavaScript1.2" type="text/javascript" src="http://www.ComicInvasion.com/cgi-bin/Autocomplete.pl"></script>
<script>
var CustomArray=new Array(Autocomplete);
</script>
</head>
<body>
<input type='text' style='font-family:verdana;width:300px;font-size:12px' id='ACMP' value=''/>
<script>
var obj = actb(document.getElementById('ACOMP'),CustomArray);
</script>
</body>
</html>

First, it looks like there is a typo. The id of your input element is ACMP whereas you pass 'ACOMP' to getElementById.
Second, you do not provide the source code for your Perl script. It might look like this:
#!/usr/bin/perl
use utf8;
use strict; use warnings;
use CGI();
local $| = 1;
print CGI::header(
-type => 'text/javascript',
-charset => 'utf-8',
);
print <<JS;
var Autocomplete = [
'an apple','alligator','elephant','pear','kingbird',
'kingbolt','kingcraft','kingcup','kingdom','kingfisher',
'kingpin','SML'
];
JS
With the following HTML, autocompletion works:
<!DOCTYPE html>
<html>
<head>
<script type="text/javascript"
src="http://www.comicinvasion.com/Code/Java/Autocomplete/Autocomplete.js"></script>
<script type="text/javascript" src="http://www.comicinvasion.com/Code/Java/Autocomplete/Common.js"></script>
<!-- Replace with the URI of your script -->
<script type="text/javascript" src="http://test:8080/cgi-bin/autocomplete.pl"></script>
</head>
<body>
<input type='text'
style='font-family:verdana;width:300px;font-size:12px'
id='ACOMP' value=''>
<script type="text/javascript">
var obj = actb(document.getElementById('ACOMP'), Autocomplete);
</script>
</body>
</html>
Finally, I find it curious that your JavaScript files live in a directory called Java.

Have the perl script return this:
var CustomArray = "an apple, alligator".split(',');
Or, if it has to be this it's okay too:
var CustomArray = "'an apple','alligator'".split(',');
Obviously, I omitted the rest of the items in there but you'd include all of them.

Categories