js实现时钟定时器
本文实例为大家分享了js实现时钟定时器的具体代码,供大家参考,具体内容如下
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>时钟</title> <script type="text/javascript"> function showClock(){ // 1. 获取当前时间 var time = new Date(); // document.write(time); var year = time.getFullYear(); // document.write(year); var month = time.getMonth() + 1; // document.write(month); var day = time.getDate(); // var day1 = time.getDay(); // document.write(day1); var hours = time.getHours(); // document.write(hours); var minutes = time.getMinutes(); // document.write(minutes); var seconds = time.getSeconds(); document.getElementById("clock").innerHTML = year+"-"+month+"-"+day+" " +hours+":"+minutes+":"+seconds; } var flag = true; var id; function runClock(){ var btn = document.getElementById("btn"); if(flag){ // 计时操作 id = setInterval("showClock()",1000); flag = false; btn.innerHTML = "停止"; }else{ // 停止计时操作 clearInterval(id); flag = true; btn.innerHTML = "动起来"; } } </script> </head> <body> <button οnclick="showClock()">点击显示时钟</button> <div id="clock"> </div> <button id="btn" οnclick="runClock()">动起来</button> </body> </html>
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