Which four actions should you perform in sequence?

DRAG DROP

You develop an HTML5 webpage.

You have the following HTML markup:

You also have the following JavaScript variable defined:

var languages = [];

You need to add statements to an existing JavaScript function to sort the list items.

Which four actions should you perform in sequence? (Develop the solution by selecting the required code segments and arranging them in the correct order.)

View Answer

Answer:

Explanation:

* getElementsByTagName

The getElementsByTagName() method accesses all elements with the specified tagname.

* Example:

// Get the list items and setup an array for sorting

var lis = ul.getElementsByTagName("LI");

var vals = [];

// Populate the array

for(var i = 0, l = lis.length; i < l; i++)

vals.push(lis[i].innerHTML);

// Sort it

vals.sort();

// Sometimes you gotta DESC

if(sortDescending)

vals.reverse();

// Change the list on the page

for(var i = 0, l = lis.length; i < l; i++)

lis[i].innerHTML = vals[i];

}