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javascript - Whatsapp text format convert into html format

Need help to convert whatsapp text format to html format and convert html format to whatsapp text format. Using php script or javascript.

*bold* to <strong>bold</strong>
<strong>bold</strong> to *bold*

_italic_ to <em>italic</em>
<em>italic</em> to _italic_

~strike~ to <del>strike</del>
<del>strike</del> to ~strike~
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by (71.8m points)

Try this:

let strBold = '*bold*';
let replacedBold = strBold.replace(/*(?=w)/, '<strong>').replace(/(?<=w)*/, '</strong>')
console.log(replacedBold);

let strItalic = '_italic_';
let replacedItalic = strItalic.replace(/\_(?=w)/, '<em>').replace(/(?<=w)\_/, '</em>');
console.log(replacedItalic);

let strStrike = '~strike~';
let replacedStrike = strStrike.replace(/~(?=w)/, '<del>').replace(/(?<=w)~/, '</del>');
console.log(replacedStrike);

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
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