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Use dynamic (variable) string as regex pattern in JavaScript
...this is #abc# some #abc# stuff.";
var output = input.replace(regex, "!!");
alert(output); // Hello this is !! some !! stuff.
JSFiddle demo here.
In the general case, escape the string before using as regex:
Not every string is a valid regex, though: there are some speciall characters, like ( or [....
Making the iPhone vibrate
...nctions that take a parameter kSystemSoundID_Vibrate:
1) AudioServicesPlayAlertSound(kSystemSoundID_Vibrate);
2) AudioServicesPlaySystemSound(kSystemSoundID_Vibrate);
Both of the functions vibrate the iPhone. But, when you use the first
function on devices that don’t support vibration, it ...
AngularJS access scope from outside js function
...angularjs like a jquery/javascript event handler.
function change() {
alert("a");
var scope = angular.element($("#outer")).scope();
scope.$apply(function(){
scope.msg = 'Superhero';
})
}
Demo: Fiddle
...
How can I bind to the change event of a textarea in jQuery?
... oldVal = currentVal;
//action to be performed on textarea changed
alert("changed!");
});
jsFiddle Demo
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How to check if element has any children in Javascript?
...childElementCount property:
if ( element.childElementCount !== 0 ){
alert('i have children');
} else {
alert('no kids here');
}
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fo...
event.preventDefault() function not working in IE
...ault always works
$("mootoolsbutton").addEvent('click', function(event) {
alert(typeof(event.preventDefault));
});
// preventDefault missing in IE
<button
id="htmlbutton"
onclick="alert(typeof(event.preventDefault));">
button</button>
For all jQuery users out there you can fix ...
What is the correct JSON content type?
...(Form form, int httpStatus, String responseText)
{
MessageBox.alert("Error");
}
@Override
public void onActionComplete(Form form, int httpStatus, String responseText)
{
MessageBox.alert("Success");
}
});
In case of using application/json response type, th...
How can I find the length of a number?
...have to make the number to string in order to take length
var num = 123;
alert((num + "").length);
or
alert(num.toString().length);
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How do I implement onchange of with jQuery?
..., so the way to do it is
$('input.myTextInput').on('input',function(e){
alert('Changed!')
});
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How to find the sum of an array of numbers
...ray is built
// from user input as it may be exploited eg:
eval([1,"2;alert('Malicious code!')"].join('+'))
Of course displaying an alert isn't the worst thing that could happen. The only reason I have included this is as an answer Ortund's question as I do not think it was clarified.
...