You could also do something similar to this, and there are many different ways to use a ternary: $(div)(300)
Themes: base black-tie blitzer cupertino dark-hive dot-luv eggplant excite-bike flick hot-sneaks humanity le-frog mint-choc overcast pepper-grinder redmond smoothness south-street start sunny swanky-purse trontastic ui-darkness ui-lightness vader. Return someOtherVar or function //some does not have the class. jQuery UI 1.12.1 - uncompressed, minified. In other words you can do: var some = $(some).length ? What if other JavaScript frameworks also use the sign as a shortcut If two different frameworks are using the same shortcut, one of them might stop working. There are many other popular JavaScript frameworks like: Angular, Backbone, Ember, Knockout, and more. This returns something, so usually it's used like so: var some = someVar=true ? "it's true" : "it's false" As you already know jQuery uses the sign as a shortcut for jQuery. You can also do: some = true ? "it's true" : null If you can use them or one of them, you should use them/it as far as possible.The shorthand IF/ELSE you are reffering to is called a ternary operator, and it's not chainable in the same way as a IF/ELSE statements, nor is it chainable as a jQuery method, and there are some limits to it's use, you can however place one inside the other, like so: some = true ? someMore = true ? "it's true" : "it's false" : "it's false" Also, Google Chrome and Safari support KeyboardEvent.keyIdentifier which is defined in the old draft of DOM Level 3 Events. IE and Firefox already (partially) support KeyboardEvent.key. This shouldn't be used by new web applications.
Cmd + Shift + Down Arrow or Cmd + Shift + Fn + Right Arrow. Select text between the cursor and the end of the document. Developers were having a hard time dealing. The majority of JavaScript’s libraries were rolled out to improve the productivity and performance of web systems.
Cmd + Shift + Up Arrow or Cmd + Shift + Fn + Left Arrow. It’s said that necessity is the mother of invention and the emergence of jQuery in the world of web development is a great example of this. Also, most CDNs will make sure that once a user requests a file from it. Select text between the cursor and the beginning of the document. As a result, it will be loaded from cache when they visit your site, which leads to faster loading time. Pages or Web apps using it may break at any time. Many users already have downloaded jQuery from Google when visiting another site. Though some browsers may still support it, it is in the process of being dropped. This feature has been removed from the Web standards. Quoting MDN article for ke圜ode: Deprecated Ke圜ode has recently been deprecated (but I haven't found a cross-browser solution yet).
You can use this jQuery code to capture the keydown event of the left, right, up, and down arrow keys:Į.preventDefault() // avoid browser scrolling due to pressed keyĪnd in the following code snippet you can see and run a complete example in which images are swapped using the keys or the buttons. At this moment the other 3 answers here use this keypress event and that is why they don't work in Google Chrome nor Safari, but if you change that to keydown they'll work on all browsers. Get the current computed height for the first element in the set of matched elements, including padding, border, and optionally margin. That is why that is not useful for trapping any key alone.īut you have to take special care choosing the event to trap the cursor keys because Webkit has decided not to trap them with the keypress event as it is not in the standard. jQuery cheat sheet of all shortcuts and commands. As zzzzBov explained, the HTML accesskey defines a key that will be trapped only when it is combined with the ALT key.