In javascript, we can use setTimeout to do call itself recursively until a condition is met.
Here, we want to check the html content with an interval of 300ms until it is populated, then we will do something.
function checkPostCode() {
if ($('#my_postcode').html() == '') {
setTimeout(function() {
checkPostCode();
}, 300);
}
else {
$('#nearest_store').html('some content');
return;
}
}
checkPostCode();
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