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What is jQuery Unobtrusive Validation?
...o shown very nicely in this Pluralsight video in the section on " AJAX and JavaScript".
Basically, it is simply Javascript validation that doesn't pollute your source code with its own validation code. This is done by making use of data- attributes in HTML.
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Best cross-browser method to capture CTRL+S with JQuery?
...amp;& event.ctrlKey) && !(event.which == 19)) return true;
alert("Ctrl-S pressed");
event.preventDefault();
return false;
});
Key codes can differ between browsers, so you may need to check for more than just 115.
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Tri-state Check box in HTML?
...eterminate state cannot be set in the HTML markup, it can only be done via Javascript (see this JSfiddle test and this detailed article in CSS tricks)
This state doesn't change the value of the checkbox, it is only a visual cue that masks the input's real state.
Browser test: Worked for me in Chrome...
How do I find out if the GPS of an Android device is enabled
...manager.isProviderEnabled( LocationManager.GPS_PROVIDER ) ) {
buildAlertMessageNoGps();
}
private void buildAlertMessageNoGps() {
final AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setMessage("Your GPS seems to be disabled, do you want to enable it?")
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How do I check if a number evaluates to infinity?
I have a series of Javascript calculations that (only under IE) show Infinity depending on user choices.
7 Answers
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How to save an image to localStorage and display it on the next page?
...es. There are posts on stackoverflow that cover file size validation using Javascript.
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SecurityError: Blocked a frame with origin from accessing a cross-origin frame
...ame> in my HTML page and trying to access the elements within it using Javascript, but when I try to execute my code, I get the following error:
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Binding arrow keys in JS/jQuery
How do I go about binding a function to left and right arrow keys in Javascript and/or jQuery? I looked at the js-hotkey plugin for jQuery (wraps the built-in bind function to add an argument to recognize specific keys), but it doesn't seem to support arrow keys.
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Select all elements with “data-” attribute without using jQuery
Using only JavaScript, what is the most efficient way to select all DOM elements that have a certain data- attribute (let's say data-foo ). The elements may be different tag elements.
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jquery $(window).width() and $(window).height() return different values when viewport has not been r
...o catch it... I figured this out once I put alert statements in between my javascript statements to break the code into distinct states. I did that so I could have the alerts report the measurements at every stage in the code execution. That's when I noticed that one of the states caused scrollbars ...