Javascript how to start script on exact time

Question

Javascript how to start script on exact time

137 views Asked by PUG Notorious At 25 December 2024 at 22:26

script will start on exact time (ex: 2015:06:15:00:00)
If its on time, it will alert HELLO every 1 second.

setInterval(function () {alert("Hello")}, 1000);

could you please help me how to make this on up?

Original Q&A

There are 2 answers

Sven Fab On 14 June 2015 at 10:52

There is no possibility to define a date driven trigger in javascript.

Instead you might register your function from the beginning and check there if the start date is reached.

<html>
    <head>
        <script type="text/javascript">
            var startDate = new Date("2015-06-14 12:47");
            window.setInterval(checkDate, 1000);

            function checkDate()
            {
                if (new Date() > startDate)
                    myDate.value = new Date().toLocaleString(); //or do your alert ;)
            }
        </script>
    </head>
    <body>
        <input type="text" id="myDate" style="width: 200px" />
    </body>
</html>

**Jyan Z** · Accepted Answer · 2015-06-14 11:15:29

I'd use the getTime object in JS

I believe I have the time set right in this JSFiddle

var d = new Date();
var year = d.getFullYear();
// Month 0 = January | Month 11 = December | so I changed vallues by +one
var month = d.getMonth() + 1;
var day = d.getDate();
var hour = d.getHours();
var minute = d.getMinutes();
var second = d.getSeconds();

var overall = year.toString() + month.toString() + day.toString() + hour.toString() + minute.toString() + second.toString();

alert(overall);

var checkDate =  function () {
if(overall==="20156150000") {
    setInterval(function(){ alert("Hello"); }, 1000);
    };
};

window.setInterval(checkDate(), 1000);

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Javascript how to start script on exact time

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