この記事では、JSの単純なカウントダウン実装コードについて説明します。次のように、参照のために共有してください。
<div>イベントの終了の数日前はまだあります<span id = "day"> </span> hours <span id = "min"> </span> minutes <span id = "sec"> </span> seconds </div> <スクリプトタイプ= "text/javascript"> var = document.getelementbyid（ "day"）; var hours = document.getelementbyid（hours "）; document.getElementById（ "min"）; var sec = document.getElementbyid（ "sec"）; var Differencehour = -1; var Differenceminute = -1; var DifferenceCond = -1; // var tday = new Date（ "07 20,2016 10:00:00"）// // IE：月/日/年var daysms = 24 * 60 * 60 * 1000; var hoursms = 60 * 1000; var secondms = 60 * 1000; var microsecond = 1000; function clock（）{var time = new Date（）; var hour = time.gethours（）; var minute = time.getMinutes（）; var second = time.getSeconds（）; var timevalue = "" +（（hour> 12）？hour-12：hour）; timeValue + =（（minute <10）？ "：0"： "："） + minuts; timeValue + =（（2番目の<10）？ "：0"： "："） + second; timeValue +=（（hour> 12）？ "pm"： "am"）; // document.formnow.now.value = timevalue var converthour = differencehour; var convertminute = Diferenceminute; var convertsecond = Diferencesecond; var diffms = tday.gettime（） - time.gettime（）; DifferenceHour = Math.floor（diffms / daysms）; diffms- = DifferenceHour * daysms; DiferenceMinute = Math.floor（diffms / hoursms）; diffms - = Diferenceminute * Houlsms; Differencesecond = math.floor（diffms / secondms）; diffms- = differencesecond * secondms; var dsecs = math.floor（diffms / microsecond）; if（converthour！= DifferenceHour）{day.innerhtml = differencehour; } if（convertminute！= diferenceminute）{hourge.innerhtml = diferenceminute; } if（convertsecond！= dixercencesecond）{min.innerhtml = dileferencesecond; } sec.innerhtml = dsecs; // document.formnow.value = DifferenceHour DiferenceMinute + DifferenceCond + DSECS SetimeOut（ "Clock（）"、1000）;} clock（）; </script>For more information about JavaScript, please check this site's special topics: "Summary of JavaScript Time and Date Operation Skills", "Summary of JavaScript Switching Effects and Skills", "Summary of JavaScript Search Algorithm Skills", "Summary of JavaScript Animation Special Effects and Skills", "Summary of JavaScript Errors and Debugging Skills", "Summary of JavaScript Data Structures and Algorithm Skills", 「JavaScriptトラバーサルアルゴリズムとスキルの概要」および「JavaScript数学的操作の使用の概要」
この記事がみんなのJavaScriptプログラミングに役立つことを願っています。