docs/web/form.html

<!DOCTYPE html>
<html>
<body>

<button  onclick="myFunction()">RUN</button>
<div id="b1"></div>
<br/>
<textarea  autofocus id="demo" cols="140" rows="10"><b>Lirbi讀卡器</ B> - 為舒適讀取任何書格式的免費應用程序 <B> Lirbi Reader </ b> <B> Learning foreign languages ​​</ b> foreign languages <B> Learning foreign languages ​​</ b></textarea>
<br/>
<pre id="res"></pre>
<script>
function myFunction() {
    var str = document.getElementById("demo").value; 
    
    var res = str;
    res = res.replace(/\u200B/g,'');
    res = res.replace(/<b> /ig, '<b>');
    res = res.replace(/ <\/ b>/ig, '</b>');
    res = res.replace(/<\/ b>/ig, '</b>');
    
    document.getElementById("demo").value = res;
    document.getElementById("demo").select();

    document.getElementById("res").innerHTML = res;
    document.getElementById("b1").innerHTML = res.length;
    
}
</script>

</body>
</html>