in javascript how to send request some url at a partcular time(e.g daily 5 pm)

in javascript how to send request some url at a partcular time(e.g daily 5 pm).........

very day @5pm i have to send some request (url)e.g sending emails how to do in 开发者_运维知识库java script

You really don't want to do it this way. If you have access to the server take a look at scheduled tasks (for windows) or cron jobs (for linux).

If you absolutely have no other alternatives the only way to accomplish this would be to create a loop with setInterval and check the current time in every iteration. But I just cringed writing that.

Another solution:

var now = new Date();
// 17 o'clock today
var target = new Date(now.getYear(), now.getMonth(), now.getDay(), 17);

setTimeout(function(){
    // do stuff  
}, target.getTime() - now.getTime());

But regarding your question this is not a convenient solution. It means that you have to have the JS code running the whole day (with my example you even have to reload the code every day). A cron job is really a much more appropriate solution. There are also free cron job services on the internet.

I am going to hazard an answer anyway:

setTimeout(function(){
    //payload here
}, 3600000*24); //one day. Launch at 5pm :)

This is quite simple and ugly, you probably want to add more detail to the condition (minutes, etc)