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Custom exception type
...eption();
}
catch (e) {
if (e instanceof NotNumberException) {
alert("not a number");
}
else
if (e instanceof NotPositiveNumberException) {
alert("not a positive number");
}
}
There is another syntax for catching a typed exception, although this won't work in ev...
Get value of a string after last slash in JavaScript
...
var str = "foo/bar/test.html";
var lastSlash = str.lastIndexOf("/");
alert(str.substring(lastSlash+1));
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Keyboard shortcuts with jQuery
...
<script type="text/javascript">
$(document).ready(function(){
$("#test").keypress(function(e){
if (e.which == 103)
{
alert('g');
};
...
Getting the object's property name
...
i is the name.
for(var name in obj) {
alert(name);
var value = obj[name];
alert(value);
}
So you could do:
seperateObj[i] = myObject[i];
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How to have favicon / icon set when bookmarklet dragged to toolbar?
...
A bookmarklet uses the javascript:// schema and thus do not have a domain from which a favicon may be loaded.
So, currently there is no way for you to provide a favicon for a bookmarklet. Think about it like this: remember the whole Javascript sandbo...
jQuery get selected option value (not the text, but the attribute 'value')
...ion text ' + $(this).find('option').filter(':selected').text());
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
<select>
<option value="1" selected>1 - Text</option>
<option value="2">2 - Text</option>...
Including a .js file within a .js file [duplicate]
...w element and attach that to <head>
var x = document.createElement('script');
x.src = 'http://example.com/test.js';
document.getElementsByTagName("head")[0].appendChild(x);
You may also use onload event to each script you attach, but please test it out, I am not so sure it works cross-brows...
javascript i++ vs ++i [duplicate]
...value of ++i is the value of i after the increment.
Example:
var i = 42;
alert(i++); // shows 42
alert(i); // shows 43
i = 42;
alert(++i); // shows 43
alert(i); // shows 43
The i-- and --i operators works the same way.
s...
Warn user before leaving web page with unsaved changes
...vant keypresses like the Ctrl key.
Won't trigger on values set through JavaScript code.
Won't trigger on cutting or pasting text through context menus.
Won't work for virtual inputs like datepickers or checkbox/radiobutton beautifiers which save their value in a hidden input through JavaScript.
Th...
jQuery: more than one handler for same event
...nts in sequence, e.g.:
$('#target')
.bind('click',function(event) {
alert('Hello!');
})
.bind('click',function(event) {
alert('Hello again!');
})
.bind('click',function(event) {
alert('Hello yet again!');
});
I guess the below code is doing the same
$('#target')
.cl...