Download Beginning jQuery by Jack Franklin PDF

By Jack Franklin

Beginning jQuery is your step by step consultant to studying the jQuery library. jQuery is the most well-liked JavaScript library within the internet developer's toolkit. Jack Franklin takes you from the fundamentals of having you begun with jQuery, all the way through to extending jQuery by way of writing your individual plug-ins. you will discover top practices you could keep on with, how one can stay away from universal error, and you can know about such a lot of of the issues that jQuery has to supply, together with how one can:

  • Use jQuery's robust instruments to dynamically replace content material in your website, together with DOM manipulation.
  • Extend jQuery's features by way of writing your personal plugins on most sensible of the framework.
  • Animate components and construct your personal jQuery slider.
  • Employ top practices and steer clear of universal mistakes made via newcomers.

JavaScript is a robust language yet each net developer needs to navigate the tough concerns round cross-browser inconsistencies. Beginning jQuery teaches you the way to take advantage of jQuery to prevent spending a while solving those browser insects - letting you think about what quite concerns to you. all through Beginning jQuery, you will discover how expressive but concise jQuery's code is and what kind of speedier and effective you could advance with jQuery!

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Extra resources for Beginning jQuery

Sample text

Here’s what this chapter holds: u Selecting elements with CSS selectors and exploring which are the most efficient. u Using jQuery pseudo-selectors. u Exploring the variety of traversal methods that jQuery provides. u Caching selectors and chaining methods to avoid reselecting elements. u Avoiding more DOM work than necessary. The bottleneck of any jQuery project is always the DOM interaction. Interacting with the DOM is expensive, so the fewer times you can do it, the better. CSS Selectors in jQuery The beauty of jQuery, and why it became so popular, certainly involves the fact that it’s so easy to use.

FadeOut("slow"); }); Refresh your page—and that lovely red box will slowly fade out of view. It’s probably easy to see why the fadeOut() method is aptly named. You can see that I pass in the argument, “slow”, which you would correctly guess makes the box fade out slower. You can also use the keywords “normal” and “fast”, which do exactly what you’d imagine. If you were to stumble across the fadeOut method, and wanted a page that gave a comprehensive overview of how it works and how to use it, you would look to the jQuery API documentation.

Ready(function() {}) is so common, jQuery has a handy shortcut. You can simply do the following: $(function() { }); And that means exactly the same thing. If jQuery detects you’ve passed it a function, it will presume that function should be executed on the DOM already. It’s a handy little shortcut to save you a small amount of typing. ” What I meant by this is that when you’re selecting something like $("body");, what you’re actually doing is calling a function that jQuery provides, which is stored as a variable called $ symbol.

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