How do I set a delay with setTimeout()? [duplicate] - javascript

This question already has answers here:
Why is the method executed immediately when I use setTimeout?
(8 answers)
What is the difference between a function call and function reference?
(6 answers)
Closed 9 months ago.
I have code that is supposed to make a one-second-delayed loop, but it instead executes the code in the loop constantly.
loop1()
function loop1() {
setTimeout(loop2(), 1000)
}
function loop2() {
console.log("hey")
setTimeout(myLoop(), 1000)
}

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How can I set delay for running functions [duplicate]

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I have javascript for call 2 function for example:
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Use setTimeout() function:
setTimeout(function(){
alert("Hello");
}, 3000);
:)

Synchronous execution of setimeout [duplicate]

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How would I convert the following:
while True:
# do something
time.sleep(2)
into JavaScript?

You would not, as JavaScript does not sleep - it is synchronous and event-based. Yet, you can schedule functions to be executed later in time via setTimeout and setInterval:
var timerid = setInterval(function() {
// do something
// instead of "break", you'd use "clearTimeout(timerid)"
}, 2000);
For your ajax progress bar, I'd recommend the following which does not fire requests strictly each 2s, but waits for them to return:
function getUpdate() {
myAjax(…, function onAjaxSuccess(result) { // an async event as well
// show(result)
if (!result.end)
setTimeout(getUpdate, 2000);
});
}
getUpdate();

setInterval(function() {
console.log('do something');
}, 2000);
http://jsfiddle.net/rS9bH/

Python while loop conversion to Javascript [duplicate]

This question already has answers here:
Sleep in JavaScript - delay between actions
(15 answers)
What is the JavaScript version of sleep()?
(91 answers)
Closed 11 months ago.
How would I convert the following:
while True:
# do something
time.sleep(2)
into JavaScript?

You would not, as JavaScript does not sleep - it is synchronous and event-based. Yet, you can schedule functions to be executed later in time via setTimeout and setInterval:
var timerid = setInterval(function() {
// do something
// instead of "break", you'd use "clearTimeout(timerid)"
}, 2000);
For your ajax progress bar, I'd recommend the following which does not fire requests strictly each 2s, but waits for them to return:
function getUpdate() {
myAjax(…, function onAjaxSuccess(result) { // an async event as well
// show(result)
if (!result.end)
setTimeout(getUpdate, 2000);
});
}
getUpdate();

setInterval(function() {
console.log('do something');
}, 2000);
http://jsfiddle.net/rS9bH/

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