選択した文字列とURLをCosneseのリンク記法でコピーするブックマークレット

copy-text-and-url-as-cosense-link.js

javascript:(async()=>{const selection=window.getSelection();const text=selection?.toString().trim();if(!text||selection.rangeCount===0)return;const range=selection.getRangeAt(0);const context=(node,offset,length,before)=>{if(node?.nodeType!==Node.TEXT_NODE)return'';const value=node.textContent;return(before?value.slice(Math.max(0,offset-length),offset):value.slice(offset,offset+length)).trim();};const prefix=context(range.startContainer,range.startOffset,20,true);const suffix=context(range.endContainer,range.endOffset,20,false);const encodeTextFragment=value=>value.replace(/[\t\n\r ]/g,c=>encodeURIComponent(c)).replace(/-/g,"%2D");const fragment=`:~:text=${prefix?`${encodeTextFragment(prefix)}-,`:''}${encodeTextFragment(text)}${suffix?`,-${encodeTextFragment(suffix)}`:''}`;const baseUrl=location.href.split('#')[0];const url=`${baseUrl}#${fragment}`;try{await navigator.clipboard.writeText(`[${url} ${text}]`);const notice=document.createElement('div');notice.textContent='コピー完了';Object.assign(notice.style,{position:'fixed',top:'20px',left:'50%',transform:'translateX(-50%)',padding:'8px 16px',background:'#333',color:'#fff',zIndex:2147483647,borderRadius:'4px',fontSize:'14px',pointerEvents:'none',boxShadow:'0 2px 8px rgba(0,0,0,.3)'});document.body.appendChild(notice);setTimeout(()=>notice.remove(),1500);}catch(error){console.error('コピーに失敗',error);}})();