Finds the total GB used for a month in the MySLT Portals' Broadband > Daily Usage tab

myslt.dailyusage.js

/**
 * INSTRUCTIONS:
 * 
 * Make sure you are on the Broadband > Daily Usage tab of the MySLT Portal
 * 
 * Right click any where on the web page and click "Inspect".
 * The Inspect window will open, go to the "Console" tab.
 * 
 * Select the month you want to the total for in the MySLT Daily Usage tab
 * Copy & paste in the following code in the Console tab of the Inspector window.
 * 
 * Press "Enter" on your keyboard and you should get a total of the GB used
 * (for example: "33.0 GB")
 */

Array.from(document.querySelectorAll(".table tr"))
	.filter((e, i) => i > 0)
	.map((e) => { 
		let gb = e.querySelectorAll("td:nth-of-type(2)")[0].innerText; 
		return Number.parseFloat(gb.replace("GB", "")); })
	.reduce((acc, c) => acc + c)
	.toFixed(2) + " GB"

/**
 * CODE EXPLANATION (do not copy and paste this part. Only copy the Javascript code above):
 * 
 * We first select all the table row elements from (probably) the only table element
 * currently loaded on the web page - that is the table displaying the daily network usage.
 * 
 * We skip the first row which is just the table headers.
 * 
 * For each table row, we find the 2nd column which contains the usage information.
 * Since we use querySelectorAll here, it returns an array but we only need the first element
 * so we extract is using [0]. Afterwards, we extract the text inside the "td" (table cell).
 * Finally, we replace the "GB" portion of that text and convert the number part from 
 * the String type to the Number type (so we can add them later).
 * 
 * The .reduce() function can be used to do the same operation over all the elements in the array.
 * For each callback, it provides the last result and the current item to process (respectively, acc and c).
 * Since we want to find the total GB used, we add the last result and current item (both numbers) together.
 * 
 * Finally, we convert the floating point number result to a string with only 2 decimal places and 
 * add the " GB" text to the end.
 */