覆盖JavaScript和jQuery中的操作

Question

In my requirement, a user can select multiple check-boxes. However after checking each check-box I need to call the URL and pass selected checkbox value with time-delay of 3 seconds. This delay is required, so that user can select/de-select another checkbox, old action should be canceled and new selected value(s) should be passed.

I know to call a function with delay, but don't know how to stop the last action with the new one.

setTimeout(function(){ call_me(action) },3000);
function call_me(action)
{
    var url = action
    $(location).attr('href',url);
}

Answer 1

You have to use clearTimeout() , but first you need to assign the return of the setTimeout to a variable.

// declared outside of your code that sets the timeout.
var t;


// your code to be run when you want to set the timeout
clearTimeout(t);  // if there is no timeout already assigned to t, this line does nothing.
t = setTimeout(function(){ call_me(action) },3000);
function call_me(action)
{
    var url = action
    $(location).attr('href',url);
}