Javascript写时间函数

function show(){var date = new Date();var year = date.getFullYear();var month = date.getMonth()+1;month=month<10?"0"+month:month;var day = date.getDate();day = day<10?"0"+day:day;var week = date.getDay();week="周"+"日一二三四五六".charAt(week);var hour = date.getHours();hour =hour<10?"0"+hour:hour;var minute = date.getMinutes();minute= minute<10?"0"+minute:minute;var second = date.getSeconds();second=second<10?"0"+second:second;console.log(year+"-"+month+"-"+day+"-"+week+"-"+hour+":"+minute+":"+second); }show();setInterval("show()",1000);

	var strs = "abcdefg";console.log(strs.substr(1,3));//从下标1开始截3个;bcdconsole.log(strs.substring(1,3));//从下标1截到下标3（不含下标3）;bc

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