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+--- Thread: grp.listen init, value (/showthread.php?tid=2328)
grp.listen init, value - buuuudzik - 06.11.2019
I've found that grp.listen() when when it has last optional param set to true, then it initially runs 2 times: 1) state=="init", 2) state=="value"
I think state=="value" should only run when value change or update on a bus, this is logically separated from "init".
RE: grp.listen init, value - admin - 08.11.2019
This is intended behavior. You can ignore init state and/or use a variable to check if this is the first time that callback is called.
RE: grp.listen init, value - DGrandes - 09.12.2020
Hi!
Is there any way to use grp.listen() when an object updates but not changes?
I´m doing a emergent notification and many times the message is the same. Object updates but function inside JS doesn´t run.
Code:
grp.listen("33/1/255", function(object,state) {
if (state == 'value') {
console.log('Show message')
setTimeout(function(){
console.log('Hide Messase')
}, 4500);
}
});RE: grp.listen init, value - admin - 09.12.2020
Add a third argument (true) to grp.listen to catch all messages. You also need to clear the timeout on each value update otherwise your function won't work correctly.
Code:
$(function() {
var timeout;
grp.listen("33/1/255", function(object,state) {
if (state == 'value') {
console.log('Show message');
clearTimeout(timeout);
timeout = setTimeout(function(){
console.log('Hide Messase');
}, 4500);
}
}, true);
});RE: grp.listen init, value - DGrandes - 09.12.2020
(09.12.2020, 09:28)admin Wrote: Add a third argument (true) to grp.listen to catch all messages. You also need to clear the timeout on each value update otherwise your function won't work correctly.
Code:$(function() {
var timeout;
grp.listen("33/1/255", function(object,state) {
if (state == 'value') {
console.log('Show message');
clearTimeout(timeout);
timeout = setTimeout(function(){
console.log('Hide Messase');
}, 4500);
}
}, true);
});
Ok Thanks!