Please help me ! Which method I want use in JavaScript?

Question

--------------------------------------------------
Date : 01 - 01 - 23
HTSC No : ###
Cust Name : ***
--------------------------------------------------

Imp Kwh : 0.00
Imp A : 0.00
Imp B : 0.00
Imp C : 0.00
Imp D : 0.00
Imp E : 0.00
Imp LAG : 0.00
Imp LEAD : 0.00
Imp Kvah : 0.00

Exp kWh : 0.00
Exp A : 0.00
Exp B : 0.00
Exp C. : 0.00
Exp D : 0.00
Exp E : 0.00
Exp LAG : 0.00
Exp LEAD : 0.00
Exp Kvah : 0.00

========================

Kwh Export : 0.00

LCS : 0.00

Gen. Hrs : 0.00 Hrs

Kwh Imp : 0.00

Kvarh Imp : 0.00

% of Kvarh : 0.00

Log : Nill

Lull Hours : 00.00 Hrs
______________________________

Any idea to get the values from the given In textarea above .
I want to get the values from the given paragraph in textarea to javascript variable to process the values please help me to what method I want to use?

Answer 1

There are several ways you can extract the values from the textarea using JavaScript. One way is by using regular expression. You can use a regular expression to find the values in the text area and then assign them to variables. For example:

// Create a regular expression to match the values
let regex = /Imp Kwh\s*:\s*([0-9.]+)\s*Imp A\s*:\s*([0-9.]+)\s*Imp B\s*:\s*([0-9.]+)\s*Imp C\s*:\s*([0-9.]+)\s*Imp D\s*:\s*([0-9.]+)\s*Imp E\s*:\s*([0-9.]+)\s*Imp LAG\s*:\s*([0-9.]+)\s*Imp LEAD\s*:\s*([0-9.]+)\s*Imp Kvah\s*:\s*([0-9.]+)\s*Exp kWh\s*:\s*([0-9.]+)\s*Exp A\s*:\s*([0-9.]+)\s

Answer 2

If you just need to get value, you need to select elem and use .value() method

elem.value()
Where elem is your textarea element
Here is ways how you can select elem:
https://www.educative.io/answers/what-are-the-different-ways-to-select-dom-elements-in-javascript

If you need to check data to match some format, you may use regex as Muhammed Favas T P said, but you can also test this string by writing js code.

Regex may be hard to understand, but it very powerful skill, here is good testing tool for it, it also have reference - short description how to use regex
https://regex101.com/