automaticlly backup an edit field on your browser

BackupForumPost.ahk

javascript:(function() 
{if(window.__grabberInstalled) 
{alert('Auto-grabber already running!');return;}function activeEl(doc) 
{doc=doc||document;let el=doc.activeElement;if(el&&el.shadowRoot) 
{el=el.shadowRoot.activeElement||el;}if(el&&el.tagName==='IFRAME') 
{try
{return activeEl(el.contentDocument)||el;}catch(e) 
{}}return el;}async function copyNow() 
{let el=activeEl();let txt='';if(!el) 
{return;}if(el.isContentEditable) 
{txt=el.innerText||el.textContent||'';}else if('value'in el) 
{txt=el.value;}if(!txt) 
{txt=String(getSelection&&getSelection()||'');}if(txt) 
{try 
{await navigator.clipboard.writeText(txt);console.log('Auto-copied:',txt.substring(0,50)+'...');}catch(e) 
{console.log(e);}}}window.__grabberInterval=setInterval(copyNow,3000);window.__grabberInstalled=true;alert('Auto-grabber running! Copying every 3 seconds. \n\nRefresh page to stop.');})();