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JavaScript Timing 事件
tryjs_timing_clock
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<!DOCTYPE html> <html> <head> <script> function startTime() { var today = new Date(); var h = today.getHours(); var m = today.getMinutes(); var s = today.getSeconds(); m = checkTime(m); s = checkTime(s); document.getElementById('txt').innerHTML = h + ":" + m + ":" + s; var t = setTimeout(startTime, 500); } function checkTime(i) { if (i < 10) {i = "0" + i}; // add zero in front of numbers < 10 return i; } </script> </head> <body onload="startTime()"> <div id="txt"></div> </body> </html>