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Listening for variable changes in JavaScript
...ster a listener using the following:
x.registerListener(function(val) {
alert("Someone changed the value of x.a to " + val);
});
So whenever anything changes the value of x.a, the listener function will be fired. Running the following line will bring the alert popup:
x.a = 42;
See an example...
Are nested HTML comments possible?
...ke sure none of it is rendered on your page, you can always wrap it with a script tag like below, only thing is, you can't comment out script tags this way.
<p>some text</p>
<!-- multiline "comment" below using script type="text/html" -->
<script type="text/html">
...
Get image data url in JavaScript?
...image.
It would be something like this. I've never written a Greasemonkey script, so you might need to adjust the code to run in that environment.
function getBase64Image(img) {
// Create an empty canvas element
var canvas = document.createElement("canvas");
canvas.width = img.width;
...
Re-enabling window.alert in Chrome
I accidently checked the "disable alerts from this site" box in Chrome, and now I cannot get any window.alert to work on my localhost.
...
Regex to check whether a string contains only numbers [duplicate]
... isSame:function(str1,str2){
return str1 === str2;
}
};
alert(validation.isNotEmpty("dff"));
alert(validation.isNumber(44));
alert(validation.isEmailAddress("mf@tl.ff"));
alert(validation.isSame("sf","sf"));
...
In Laravel, the best way to pass different types of flash messages in the session
...h two variables into the session:
The message itself
The "class" of your alert
for example:
Session::flash('message', 'This is a message!');
Session::flash('alert-class', 'alert-danger');
Then in your view:
@if(Session::has('message'))
<p class="alert {{ Session::get('alert-class', 'ale...
How do you get the length of a string?
...
but this still just uses javascript doesn't it? same as @Artem Barger's answer
– Malcolm Salvador
Jul 31 '17 at 1:37
add a commen...
Run php script as daemon process
I need to run a php script as daemon process (wait for instructions and do stuff). cron job will not do it for me because actions need to be taken as soon as instruction arrives. I know PHP is not really the best option for daemon processes due to memory management issues, but due to various reasons...
Testing if a checkbox is checked with jQuery
...true or false, not on/off, by return and you can send it to your back-end script and do whatever you want.
– Zanoldor
Feb 15 '17 at 12:33
1
...
Proper way to exit iPhone application?
...'s view
-(IBAction)doExit
{
//show confirmation message to user
UIAlertView* alert = [[UIAlertView alloc] initWithTitle:@"Confirmation"
message:@"Do you want to exit?"
delegate:self
...