By Stuart Langridge
While you're a Perl programmer trying to discover Perl's XML services or an XML developer with a uncomplicated figuring out of Perl, this publication provides you with the entire instruments required for XML processing with Perl. XML and Perl teaches you to create moveable, robust, and extensible functions in case you use XML and Perl jointly.
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Expand the services of AngularJS and construct dynamic internet purposes by way of growing custom-made directives with this feature of greater than 30 recipesAbout This BookLearn the way to expand HTML templates in new how you can construct even larger net purposes with remarkable interface componentsBuild reusable directives for large-scale AngularJS applicationsCreate even subtle and ambitious glossy internet apps with easeWho This ebook Is ForThis e-book is for builders with AngularJS adventure who are looking to expand their wisdom to create or customise directives in any kind of AngularJS program.
- Hands-on Node.js
- You Don't Know JS: Up & Going
In other words, to add your new element as a child of an existing node in the document, we use that node’s appendChild method: 7 Internet Explorer will let you get away without using a dimension, as it assumes that a dimensionless number is actually a pixel measurement. However, do not try to take advantage of this assumption; it will break your code in other browsers, and it’s in violation of the specification. appendChild(sitepoint_link); After this, our page will look a little odd.
Another useful thing to know is that, in order to move the node to its new place in the document, we don’t have to remove it first.
2. 2. The snippet’s DOM tree. getElementsByTagName method is used to retrieve all elements of a particular type. getElementsByTagName('a'); var sitepoint_link = all_links; The all_links variable contains an array, which contains two elements: a reference to the SitePoint link, and a reference to the Yahoo! link. The elements are returned in the order in which they are found in the HTML, so all_links is the SitePoint link and all_links is the Yahoo! link. getElementsByTagName always returns an array, even if only one matching element was found.
A') return null; The variable target should be a reference to the tag on which the user clicked, but it may be something inside the tag (as some browsers handle events this way). In such cases, the above code keeps getting the parent node of that tag until it gets to an tag (which will be the one we want). If we find the document body—a tag—instead, we’ve gone too far. We’ll give up, returning null (nothing) from the function, and going no further. js (excerpt) return target; } The mouseover / mouseout Functions These functions work in similar ways and do very similar things: mouseover is called when we move the mouse over one of our rollover links, while mouseout is called when we move the mouse out again.