Investigating and solving issues in Javascript and JQuery

Let me walk you through the JavaScript process I am working on:

When a text is entered in the input bar and submitted, the script dynamically creates a new "div" element and places the text inside it. This new div is then appended to an existing div called "list". Here is an example of how it is done:

$(".list").append('<div class="woof">' + '<div class="box">' + toAdd + '</div>' + '</div>');

The newly created .woof and .box divs are added to the existing .list div, with the text from the input field stored in the variable toAdd.

At the same time, the JavaScript also stores the toAdd string in an array variable (e.g., 

var theArray = ["Meow", "Cheeseburger", "Yes"]
). The goal is to randomly select one of these strings from the array and highlight it in the HTML.

The challenge I am facing is in creating a script that can identify the randomly selected string in the HTML content. While I am able to pick a string from the array, I am struggling to highlight that specific string in the HTML list.

For instance, if the random number generator selects "Yes" from the array, I want to create a script that can locate and highlight "Yes" within the HTML div, making it stand out visually to the viewer.

So, the main issue I am encountering revolves around connecting the random selection from the array to the corresponding string in the HTML content. I hope this clarifies the problem I am trying to solve.

javascriptjqueryhtmlcssarrays

Answer №1

If you need to target a specific element by its index using jQuery, you can utilize the .eq method. This method helps to pinpoint elements based on their order of appearance in the DOM.

$(".list").find(".woof").eq(randNum).addClass("background-color");

Alternatively, you can search for a specific text within an array and apply a style to the corresponding element:

textToFind = myArray[randNum];

$(".list").find("div:contains('" + textToFind + "')").addClass("background-color");

Depending on your requirements, you may choose to target the parent element instead:

$(".list").find("div:contains('" + textToFind + "')").parent().addClass("background-color");

UPDATE
After some research (see here in the comment section), it might be necessary to create a custom jQuery .filter() function to refine the selection of DOM elements. I have devised a solution for your scenario that considers case insensitivity and whitespace trimming. Here is the implementation:

$('.list').find(".box").filter(function(){ 
  return $(this).text().trim().toLowerCase() === 'cheese';
}).addClass("background-blue");

Another option is to target elements by the 'woof' class:

$('.list').find(".woof").filter(function(){ 
  return $(this).text().trim().toLowerCase() === 'cheese';
}).addClass("background-blue");

Feel free to refer to this demo on JSFiddle for further clarity: http://jsfiddle.net/kx7pd/

Remember to use your 'textToFind' variable instead of a hardcoded value like 'cheese' in the examples above. (pun intended.)

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