javascript - How can I trigger an event on page load in React?

Question

Closed. This question needs details or clarity. It is not currently accepting answers. question from:https://stackoverflow.com/questions/65841765/how-can-i-trigger-an-event-on-page-load-in-react

Answer 1

Your question is limited in explanation.It would be good if you would have shared some more code.But I will answer as per my understanding of the question.

My understanding of question:You are getting some value from footer and based on that value you want to trigger some kind of event in your page.

So,this is how you should do it.

useEffect(()=>{
//Do some event after getting value
},[value which you get from footer]).

let me explain what i have written here. First read a bit out useEffect.that would help you here. Whatever value(just an example) you get from footer put it in a variable.Now use that variable in the useEffect depenedency array.

A basic example.

function demo(){
let a;
React.useEffect(()=>{
//do yourlogic here;
},[a]);
a=10;

in the above example whenever the value of a changes the useEffect will be triggered.

You can try similar approach.