js 日期2015/12/22/16/45替换2015-12-22 16:45格式

js 日期2015/12/22/16/45替换2015-12-22 16:45格式

利用正则分组： 

function toChange(date) {

var reg = /(d+)/(d+)/(d+)/(d+)/(d+)/g;

return  date.replace(reg, "$1-$2-$3 $4:$5");

    }

var dataStr='2015/12/22/16/45'; 

console.log(toChange(dataStr));