javascript - onbeforeunload function empty fields -


i have function save needs called on onbeforeunload event. code:

var data = new array(); window.onbeforeunload = save;  function save(){      console.log(data); }  function update(){     data.push('test'); } setinterval(update, 100);

the data array empty when save method gets called. in field lots of 'test' elements. why empty?

you need return test anything.

function save(){      console.log(data);       return "testing console output"; }

this working fine me.


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