現在の画面にタイマーを表示するのブックマークレット。デフォルト設定値は25分。

timer_bookmarklet.js

javascript:var s=prompt('Please type XXmin (defalt is 25 min)',''); if(!s){s=25*60}else{s=s*60;} var r=s;var bar='';var Rate=30; function displayTimer(){bar='';for(i=Math.floor(s/Rate);i>0;i--){bar+='|';}bar='<font color="green">'+bar.substr(0,Math.floor(r/Rate))+'</font><font color="#c0c0c0">'+bar.substr(Math.floor(r/Rate),s)+'</font>'; document.getElementById('dtimer').innerHTML='TIME: ' + r-- + ' sec'+'<br>'+bar; if(r==0){ alert("Time Up!!"); document.getElementById('dclose').style.display='none'; document.getElementById('dtimer').style.display='none'; } } function delchild(elm){(elm.parentNode||elm.parentElement).removeChild(elm); }window.scroll(0,0); var dup=false; if(document.getElementById('dtimer')){delchild(document.getElementById('dtimer')); delchild(document.getElementById('dclose'));dup=true; }var clk=document.createElement('div'); if(document.all){var vwidth=document.body.clientWidth; }else{var vwidth='100%'; }document.body.insertBefore(clk,document.body.firstChild); clk.setAttribute('id','dtimer'); with(clk.style){ width='100%'; height='100%'; fontSize='60px'; padding='100px 0px 0px 0px'; textAlign='center'; opacity=0.8; filter='alpha(opacity=80)'; zIndex=998; backgroundColor='white'; position='absolute'; left=0; top=0; }var cls=document.createElement('div'); if(document.all){cls.innerHTML='<a href=\'\'>X</a>'; }else{cls.innerHTML='<a href=\'\'>X</a> '; }if(cls.attachEvent){cls.attachEvent('onclick',function(){document.getElementById('dclose').style.display='none'; document.getElementById('dtimer').style.display='none'; return false; }); }else{cls.addEventListener('click',function(event){document.getElementById('dclose').style.display='none'; document.getElementById('dtimer').style.display='none';r=0; event.preventDefault(); },false); }document.body.insertBefore(cls,document.body.firstChild); cls.setAttribute('id','dclose'); with(cls.style){ width='100%'; height='50px'; fontSize='30px'; textAlign='right'; zIndex=999; position='absolute'; }if(dup==false&&r>0){setInterval(displayTimer,1000)}else{clearInterval(0)} void(0)