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How to reconfigure setTimeout on the fly

开发者 https://www.devze.com 2023-03-21 13:01 出处:网络
I was wondering if there is a way to set the setTimeout function to different timeout on the fly. So, for example I check something every 1 second, but if I don\'t get an expected result in like 10

I was wondering if there is a way to set the setTimeout function to different timeout on the fly.

So, for example I check something every 1 second, but if I don't get an expected result in like 10 seconds I want to "reconfigure" this setTimeout to wait 3 seconds instead of 1.

Here is my code:

var br = 0;
var waitInterval = 1000;
var sleepInterval = 2000;

var waitForNewRace = setInterval(
function checkForNewRace(){
    if ( $("#data").html() == "1"){        
        $("#res").html("got it!");
    }
    else{开发者_开发知识库
        $("#counter").html(br);
        if (br++ > 9)
            waitInterval = 3000;            
    }                   

    $("#tst").html(waitInterval);
},
waitInterval
); 

If you want to check it out here is the mentioned code on jsfiddle: http://jsfiddle.net/Hitman666/Vyczj/2/


You have to stop the interval and restart it. See this fork of your jsfiddle.

EDIT: I've copied your code here in case something happens with your jsfiddle code:

var br = 0;
var waitInterval = 1000;
var sleepInterval = 2000;


function checkForNewRace(){
    if ( $("#data").html() == "1"){        
        $("#res").html("got it!");
    }
    else{
        $("#counter").html(br);
        if (br++ > 5){
            clearInterval(waitForNewRace);
            waitInterval += 1000;
            if (waitInterval > 10000)
                waitInterval = 10000;

            waitForNewRace = setInterval(
                 checkForNewRace,
                 waitInterval
            );  
        }
    }                   
    $("#tst").html(waitInterval);
}

var waitForNewRace = setInterval(
    checkForNewRace,
    waitInterval
);         


I think this will do what you want:

var br = 0;

var waitForNewRace = setInterval(function(){
        checkForNewRace();
        if(++br == 9){
            clearInterval(waitForNewRace);
            setInterval(checkForNewRace, 3000);
        }
    }, 1000); 

function checkForNewRace(){
    if($("#data").html() == "1"){   
        $("#res").html("got it!");
        clearInterval(waitForNewRace);
    }else
        $("#counter").html(br);
    $("#tst").html(waitInterval);
}


You could use clearInterval:

var br = 0;
var waitInterval = 1000;
var sleepInterval = 2000;

var waitForNewRace = setInterval(checkForNewRace,
    waitInterval
);    




function checkForNewRace(){
    console.log(waitForNewRace);
    if ( $("#data").html() == "1"){        
        $("#res").html("got it!");
    }
    else{
        $("#counter").html(br);
        if (br++ > 9){
            waitInterval = 3000;            
            clearInterval(waitForNewRace);
            br = 0;


               waitForNewRace = setInterval(checkForNewRace,
    waitInterval
);         
            }
        }                   
    $("#tst").html(waitInterval);
}

fiddle: http://jsfiddle.net/Vyczj/5/


An alternative, just need to add two lines to your own code:

var br = 0;
var waitInterval = 1000;
var sleepInterval = 2000;

var waitForNewRace = setInterval(
function checkForNewRace(){
    if ( $("#data").html() == "1"){        
        $("#res").html("got it!");
    }
    else{
        $("#counter").html(br);
        if (br++ > 9){
            clearInterval(waitForNewRace);
            waitInterval = 3000;          
            waitForNewRace=setInterval(checkForNewRace,waitInterval);  
        }
    }                   

     $("#tst").html(waitInterval);
   },
   waitInterval
);
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