Javascript countdown (timing) code to execute jump event_time and date

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[Ctrl A select all Note: If you need to introduce external Js, you need to refresh to execute

]<script> document.getElementByIdx_x=function(id){ if(typeof id =='string') return document.getElementById(id); else throw new error('please pass a string as a id!') } var timer = window.setInterval(function(){ document.getElementByIdx_x('box').innerHTML = parseInt(document.getElementByIdx_x('box').innerHTML) - 1; if(parseInt(document.getElementByIdx_x('box').innerHTML) < 0) { window.clearInterval(timer); window.location = 'http://www.jb51.net'; } }, 1000); </script>