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Using HTML5/Canvas/JavaScript to take in-browser screenshots
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JavaScript can read the DOM and render a fairly accurate representation of that using canvas. I have been working on a script which converts HTML into a canvas image. Decided today to make an implementation of it into sending fee...
Default argument values in JavaScript functions [duplicate]
...peof(a)==='undefined') a = 10;
if (typeof(b)==='undefined') b = 20;
alert("A: "+a+"\nB: "+b);
}
//testing
func();
func(80);
func(100,200);
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(Deep) copying an array using jQuery [duplicate]
...r is a copy, not a reference... so if you did this next...
bar.push('f');
alert('foo:' + foo.join(', '));
alert('bar:' + bar.join(', '));
you would now get:
foo:a, b, c, d, e
bar:a, b, c, d, e, f
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JavaScript: filter() for Objects
...type
Object.prototype.extended = "I'm everywhere!";
// See the result
alert( {}.extended ); // "I'm everywhere!"
alert( [].extended ); // "I'm everywhere!"
alert( new Date().extended ); // "I'm everywhere!"
alert( 3..extended ); // "I'm everywhere!"
alert( true.exten...
Find JavaScript function definition in Chrome
...e thing they don't seem to have (that I could find) is a way to find a JavaScript function's definition. This would be super handy for me because I'm working on a site that includes many external JS files. Sure grep solves this but in the browser would be much better. I mean, the browser has to know...
jquery - return value using ajax result on success
... return data;
},
error: function() {
alert('Error occured');
}
});
}
Another possibility (which is effectively the same thing) is to call a function inside your success: callback that passes the data when it is available.
function isSession(select...
What is the JavaScript convention for no operation?
...on is:
none of your suggestions, instead do:
var a = 2;
if (a === 1)
alert(1)
// else do nothing!
then the code is easily understandable, readable and as much efficient as it can get.
Why make it more difficult, when it can be simple?
edit:
So then, does a "no-operation" command basica...
Detect Click into Iframe using JavaScript
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The above script is used by me to detect clicks away from my site. Most advertising networks now serve banners in frames. If you click one and then quickly another one before you left on the first click, technically I want to know the ...
Is it possible to append to innerHTML without destroying descendants' event listeners?
...ning the text "foo". The handler is an anonymous function that pops up an alert() .
13 Answers
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AlertDialog.Builder with custom layout and EditText; cannot access view
I am trying to create an alert dialog with an EditText object. I need to set the initial text of the EditText programmatically. Here's what I have.
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