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Return positions of a regex match() in Javascript?
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var str = 'my string here';
var index = str.match(/here/).index;
alert(index); // <- 10
I have successfully tested this all the way back to IE5.
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Access event to call preventdefault from custom function originating from onclick attribute of tag
...).
A quick example.
function sayHi(e) {
e.preventDefault();
alert("hi");
}
<a href="http://google.co.uk" onclick="sayHi(event);">Click to say Hi</a>
Run it as is and notice that the link does no redirect to Google after the alert.
Then, change the event passed i...
What does href expression do?
...unches a javascript function(s)
<script>
function doSomething() {
alert("hello")
}
</script>
<a href="javascript:doSomething();">click me</a>
clicking the link will fire the alert.
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How can I create a simple message box in Python?
I'm looking for the same effect as alert() in JavaScript.
17 Answers
17
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How to prevent form from being submitted?
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You can use inline event onsubmit like this
<form onsubmit="alert('stop submit'); return false;" >
Or
<script>
function toSubmit(){
alert('I will not submit');
return false;
}
</script>
<form onsubmit="return toSubmit();" >
Demo
Now, this ...
jQuery and AJAX response header
... it in an iframe, but when I try to view the header info with a javascript alert, it comes up null, even though firebug sees it correctly.
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JSHint and jQuery: '$' is not defined
...the passed in window object declaration gets minified as well. e.g. window.alert() become m.alert().
Code inside the self-executing anonymous function only uses 1 instance of the window object.
You cut to the chase when calling in a window property or method, preventing expensive traversal of the sc...
Is using 'var' to declare variables optional? [duplicate]
...he differences:
external = 5;
function firsttry() {
var external = 6;
alert("first Try: " + external);
}
function secondtry() {
external = 7;
alert("second Try: " + external);
}
alert(external); // Prints 5
firsttry(); // Prints 6
alert(external); // Prints 5
secondtry(); // Prints 7
aler...
How to add a touch event to a UIView?
...l.text = "Long press recognized"
// example task: show an alert
if gesture.state == UIGestureRecognizerState.began {
let alert = UIAlertController(title: "Long Press", message: "Can I help you?", preferredStyle: UIAlertControllerStyle.alert)
alert.add...
how to get GET and POST variables with JQuery?
...() {
var targetParam = "<?php echo $_GET['target']; ?>";
//alert(targetParam);
}
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