Modifying HTML strings using jQuery

jQuery makes it very easy to modify a DOM tree.  For example, to strip all hyperlinks (<a> tags) from an element, we can write (demo)

      .replaceWith(function() { return this.childNodes });

After getting used to this, one might want to use jQuery to modify HTML contained in a string.  Here, however, the naïve approach does not work:

var htmlSource = ...;
      .replaceWith(function() { return this.childNodes });

This code tries to remove all <a> tags from the HTML contained in the htmlSource string.  However, what it actually does is create a detached DOM tree containing the new elements, strip all <a> tags in those elements, and throw the whole thing away.  It doesn’t modify the original string.  In fact, since the  $ function only takes a reference to an immutable string, this approach cannot modify the original string.

Instead, you need to retrieve the source from the DOM tree after modifying it, then assign that source back to the variable. 

There is an additional subtlety with this approach.  jQuery cannot return the complete HTML source for a collection of elements.  Therefore, it is also necessary to wrap the HTML in a dummy element (typically a <div>).   One can then call .html() to get the innerHTML of the dummy element, which will contain exactly the desired content

This also eliminates the distinction between root-level elements and nested elements.  If the original HTML string contains root-level <a> elements (which aren’t nested in other tags), writing $(htmlSource).find('a') won’t find them, since .find() only searches the descendants of the elements in the jQuery object.  By wrapping the HTML in a dummy element, all of the elements in the original content become descendants, and can be returned by .find().

Here, therefore, is the correct way to modify an HTML string using jQuery:

var htmlSource = ...;
var tree = $("<div>" + htmlSource + "</div>");

    .replaceWith(function() { return this.childNodes });

htmlSource = tree.html();




old but gold

Such descriptions are important. Eve

I advise you to read these advices before writing your response paper. Here you can find some important tips

Engineers who wish to migrate to Australia must submit a Competency Demonstration Report and the Engineers Australia must approve it. Thus, engineering students look forward to getting Cdr Australia which assists them to get a flawless CDR. This reduces the chances of rejection by the EA. Choose
Most students and experienced civil engineers are today looking forward to migrating to Australia as the job scope is better and bigger with a high pay scale. Therefore, getting CDR help is the only scope to gain entry into the country.
The CDR for Engineers Australia must be impressive and abide by the ANZSCO code and guidelines. It should also showcase the skills of the applicants as a suitable civil engineer to work according to the Australian rules and regulations.
The service providers who assist the students with CDR have experienced CDR report writing expert. These writers know the requirements of a CDR and do it accordingly.

Livewebtutors aims at providing the students with a one stop solution for all the academic related issues. The company has Livewebtutors is an online Assignment Help and assignment writing service offering expert assignment help. Hire Australian assignment writing experts.
visit now:- Assignment Help

My assignment help team associated with is ready to serve you with your academic papers. Either it is complex work for you or you have no time to complete it on time, our team of writers is ready to deliver the project on time along with maintaining the high-quality in the delivered work.

Post a Comment