Python rookie, I don't understand Javascript,. Please help explain the Javascript program.

the following figure shows the web page code: https://proxy.coderbusy.com/

climb out through python, but can"t handle it with Javascript,.
Javascript decrypts it as follows:
$(function () {

$(".port-box")["each"](function(wssP1, fnDKXroKU2) {
    var ClpoEy3 = $(fnDKXroKU2);
    var jgemfCG4 = ClpoEy3["data"]("ip");
    var TO5 = window["parseInt"](ClpoEy3["data"]("i"));
    var tVF6 = jgemfCG4["split"](".");
    for (var d7 = 0; d7 < tVF6["length"]; d7PP) {
        TO5 -= window["parseInt"](tVF6[d7])
    }
    ClpoEy3["text"](TO5)
})

})

ask the big shot to take a look. What is the expression? Thank you!

Apr.03,2021

data-ip. Convert the delimiter to an array
subtract the value of data-i from the data-ip array, then fill it into the cell
8450-62-33-159116
and finally get 8080


Thank you very much! Wake up a little.

MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-16de564-88e6.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-16de564-88e6.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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