javascript - Cache a variable exclusively on a function -

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is there way cache global variable function within group of functions, without calling function directly another?

for example, if have group of functions wrapped in parent function this:

function parentfunction() { var myvariable;     somediv.addeventlistener('click', function (e) {    myvariable = e.target;    });     anotherdiv.addeventlistener('click', function (e) {      // use myvariable without changing when above fired again.    });  }

the global variable declared @ start, given value in first function, carries on second use.

but how can stop continually updating in second function, if first function fires again?

could add event-listener inside second function check if first fires again , ensure variable doesn't change?

you can set variable once in first function:

somediv.addeventlistener('click', function (e) {     if (!clickedlink) {         clickedlink = e.target;     } });

or, can apply logic want there. sometimes, saving state in semi-global later use in different event handler warning sign might have design issue. if explain more you're trying do, offer opinion on whether there's better way solve design issue.


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