Can someone write a rule using RegExp for me?

Question

Hello, I want to change every Hegira years to Gregorian years. For example: Hegira years + 622 = Gregorian years. I have an incomplete rule.
It's (/\b\d{4}\b/g).Thanks!

Answer 1

Your rule matches any 4-digit number, which may or may not be a year. What is the context? If you have an idea on the contents of your data perhaps limit to something like [12][089]\d{2} for Gregorian years since 1800 (10dd included ;-), you get the idea)?
For calculating regex may not be the right or only tool. If you are talking web, calculate with PHP or JavaScript or whatever you are using...

Answer 2

But what is the actual application? Can you please provide a code sample?

Answer 3

Btw I found a converter for inspection at http://www.icoproject.org/conv?l=en

Answer 4

Yours teachers code takes the contents of the element with id "wpTextbox1" and change every occurred 4 digits by adding 622.
I suggest you take another look at the JavaScript tutorial on how to call it on click of a button :)
Good luck!

Answer 5

::sk:: Thank you for your replying! You are right and your explanation was so good, but i didn't get the idea yet. I meant i can't write the code:( Yes, I'm talking about web. Can you help me?

Answer 6

::sk:: In past, my teacher wrote a code for website and i saw it worked properly, but after putting it to Wikipedia's JS file, it didn't work. the following is my teacher codes:

function hejiraYearFix(){

var txt = document.getElementById("wpTextbox1").value;

var res = txt.replace(/\b\d{4}\b/g,function(m){
return parseInt(m)+622});

document.getElementById("wpTextbox1").innerHTML = res;
}
window.hejiraYearFix = hejiraYearFix;

Hope It is a useful code for more explaining.

I want to create a button that change every 4-digit number by one click.

And thank you very much for sharing the above link!

Answer 7

::sk:: But i added the button and worked but badly. The button blanked contents and added "undefined" item to the editor!
Can't you help me?