Counting lines, including html code after a specific line in a text using JavaScript

JavaScript, text injection, code inclusion, line counting

A script that counts the number of lines in a text element and injects code at a specific line using JavaScript.

In this script, we first get the element containing the text using "document.getElementsByClassName()" and store it in a variable called "brl". We then split the text into an array of lines using "split("\n")" and count the number of lines using "length". We divide the result by two to determine where to insert our code.

Next, we define the code we want to inject using "var elem = "<hr>";" and replace the line of text at the specified position with the new content using "brl.innerHTML.replace()". Finally, we update the inner HTML of the element using "brl.innerHTML".

Note that you'll need to modify the JavaScript code to suit your specific needs, such as adjusting the location of the code injection or adding more complex logic.

<div class="post-body"> The first line of text The second line of text The third line of text Fourth line of text </div> <script> // get element containing the text var brl=document.getElementsByClassName("post-body")[0]; var brl1=brl.innerHTML.split("\n"); //Count the number of lines in the text and divide the result by two to include your code in the middle of the text. var brl2=Math.round(brl1.length/2)-1 //inser your code in the text var elem="<hr>" var brl3=brl.innerHTML.replace(brl1[brl2], brl1[brl2]+elem) document.getElementsByClassName("post-body")[0].innerHTML=brl3 </script>