我有简单的stopwatch在javascript中,我的问题是是否可以以某种方式在其中实现cookie,所以如果我关闭浏览器然后重新打开它(或者至少用秒表关闭选项卡,不确定是否有区别),计时器将仍然存在运行。
最佳答案
以下是使用 cookie 和秒表的示例:
https://jsfiddle.net/tmonster/00eobuxy/
function setCookie(cname, cvalue, exdays) {
var d = new Date();
d.setTime(d.getTime() + (exdays * 24 * 60 * 60 * 1000));
var expires = "expires=" + d.toGMTString();
document.cookie = cname + "=" + cvalue + ";" + expires + ";path=/";
}
function getCookie(cname) {
var name = cname + "=";
var decodedCookie = decodeURIComponent(document.cookie);
var ca = decodedCookie.split(';');
for (var i = 0; i < ca.length; i++) {
var c = ca[i];
while (c.charAt(0) == ' ') {
c = c.substring(1);
}
if (c.indexOf(name) == 0) {
return c.substring(name.length, c.length);
}
}
return "";
}
Number.prototype.pad = function() {
return ("0" + String(this)).substr(-2);
}
var startTime = new Date();
var isRunning = false;
function tick() {
if (!isRunning) return;
var t = new Date(new Date() - startTime);
document.getElementById("stopwatch").innerHTML = t.getUTCHours().pad() + ":" + t.getMinutes().pad() + ":" + t.getSeconds().pad();
setTimeout(tick, 1000);
}
function CheckIfClockedIn() {
var ct = getCookie("ClockInTime");
if (ct.length == 0) return;
isRunning = true;
startTime = new Date(ct);
tick();
document.getElementById("punchInOut").innerHTML = "Clock out";
}
function PunchInOut() {
if (!isRunning) {
isRunning = true;
startTime = new Date();
tick();
setCookie("ClockInTime", startTime, 1);
document.getElementById("punchInOut").innerHTML = "Clock out";
} else {
isRunning = false;
setCookie("ClockInTime", "", 0);
document.getElementById("stopwatch").innerHTML = "Not clocked in";
document.getElementById("punchInOut").innerHTML = "Clock in";
}
}
关于javascript - 将 cookie 实现到简单的秒表中,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/28391615/