In the NetSuite the ship method values contains 2 or three words in it for example: “3rd party FedEX” so if any client wants to display on the the abbreviation or a single word we can use the following javascript for converting the ship method.
Example: “3rd party FedEX” can be converted into FEDEX and also : “3rd party USPS” can be converted into USPS

For getting the ship method value we need a suite-script module and to pass the value from back-end.
here I’m mentioning only the front end converting method after getting the ship method value.
Code Snippet:
//here 'data' is getting from back-end and it contains the ship method name, we are checking the words: "FedEx", "USPS", "UPS" present in it or not.
here we are also adding the delivery method page link to the website
if (data) {
//Shipped Via:Getting value of ship method and converting into Short form
var shipLink = "";
var shipAbbriv = "";
var shipMethodSearchResultData = data.searchResultData
var shipmethodValue = shipMethodSearchResultData[0].columns.shipmethod.name;
const WORDSTOCHECK = ["FedEx", "USPS", "UPS"];
for (let i = 0; i < WORDSTOCHECK.length; i++) {
if (shipmethodValue.includes(WORDSTOCHECK[i])) {
var shipViaValue = WORDSTOCHECK[i];
if (shipViaValue === "FedEx") {
shipAbbriv = "FEDEX";
shipLink = data.trackingLinks.FEDEX;
}
if (shipViaValue === "USPS") {
shipAbbriv = "USPS";
shipLink = data.trackingLinks.USPS;
}
}
}