Menu
In the code below I expected to see the following sequence
1, 2, loaded
but I get
1, loaded, 2
Why?
<html>
<script>
window.onload = function()
{
alert('loaded');
}
(function ()
{
alert('1');
}());
(function ()
{
alert('2');
}());
</script>
<body>
</body>
</html>
957
You forgot ; after window onload function expression. So it becomes:
window.onload = function () {
console.log('loaded');
}(function() { console.log('1'); }())
So onload function is immediately executed with a one parameter, which is a result of another IEFE. Hence
function() { console.log('1'); }()
is executed first, and immediately after that window.onload function expression. Then console.log('2') expression.
Great example why it's important not to forget semicolons at the end of the lines.
129
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
