js指定时间范围，随机时间

偏执的太偏执、 2023-10-01 10:00 27阅读 0赞

<!DOCTYPE html>
    <html>
    	<head>
    		<meta charset="utf-8">
    		<title></title>
    	</head>
    	<script src="https://cdn.jsdelivr.net/npm/jquery@3.6.0/dist/jquery.min.js" type="text/javascript" charset="utf-8">
    	</script>
    	<script type="text/javascript">
    		Date.prototype.format = function(fmt) {
    			var o = {
    				"M+": this.getMonth() + 1, //月份 
    				"d+": this.getDate(), //日 
    				"h+": this.getHours(), //小时 
    				"m+": this.getMinutes(), //分 
    				"s+": this.getSeconds(), //秒 
    				"q+": Math.floor((this.getMonth() + 3) / 3), //季度 
    				"S": this.getMilliseconds() //毫秒 
    			};
    			if (/(y+)/.test(fmt)) {
    				fmt = fmt.replace(RegExp.$1, (this.getFullYear() + "").substr(4 - RegExp.$1.length));
    			}
    			for (var k in o) {
    				if (new RegExp("(" + k + ")").test(fmt)) {
    					fmt = fmt.replace(RegExp.$1, (RegExp.$1.length == 1) ? (o[k]) : (("00" + o[k]).substr(("" + o[k])
    						.length)));
    				}
    			}
    			return fmt;
    		}
    
    		function run() {
    			console.log("...... fun run init ......")
    			let randomDate = randomTime('08:30:00', '09:00:00');
    			
    			console.log("...... rom date is :" + randomDate.format("yyyy-MM-dd hh:mm:ss") + " ......")
    			console.log("...... now date is :" + new Date().format("yyyy-MM-dd hh:mm:ss") + " ......")
    		}
    
    		function randomTime(startTime, endTime) {
    			console.log("interval  " + startTime + "-->" + endTime)
    			startTime = new Date().toISOString().substring(0, 10) + " " + startTime;
    			endTime = new Date().toISOString().substring(0, 10) + " " + endTime;
    			console.log("transform " + startTime + "-->" + endTime)
    
    			let m = new Date(startTime);
    			let mt = m.getTime();
    			let n = new Date(endTime);
    			let nt = n.getTime();
    			let s = nt - mt;
    			let sm = Math.floor(Math.random() * s);
    			console.log("---->" + new Date(mt + sm).format("yyyy-MM-dd hh:mm:ss"));
    			// return new Date(mt + sm).format("yyyy-MM-dd hh:mm:ss");
    			return new Date(mt + sm);
    		}
    
    		window.setInterval("run()", 1000 * 1)
    	</script>
    	<body>
    	</body>
    </html>