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Question

how do I automatically execute javascript?

Answer 1

+2 A:

Place the script at the bottom of the page, outside the closing body tag..

Sky Sanders 2010-04-15 10:58:42

Does this ensure the DOM has been created? Do you have any spec/source for this, by any chance?

Alsciende 2010-04-15 11:39:38

@Alsciende - Umm... yeah, the dom is created as it is parsed. The body was just closed so the document is ready. For sure. No doubt. Take my word for it. ...your cue to prove my arrogance ;-)

Sky Sanders 2010-04-16 14:31:02

Answer 2

+2 A:

If you don't want to use <body onload> which is good choice in terms of obtrusive javascript, you can separate that and put you code like this:

window.onload = function(){
  // your code here
};

Alternative:

Place your javascript code at the bottom of the page.

Sarfraz 2010-04-15 10:59:32

thanks, works like a charm!

2010-04-15 11:05:26

@user317005: You are welcome :)

Sarfraz 2010-04-15 11:13:06

Answer 3

A:

found a similar query. see if it is useful "answer" in SO itself.

ZX12R 2010-04-15 11:00:17

Answer 4

A:

Do yourself a big and huge favor and start using jQuery. It's so insanely much easier than writing oldschool JavaScript.

And, to do things automatically when the DOM is ready you can use something as simple as this:

$(function() {
    // This will be executed when the document is loaded and ready
});

Arve Systad 2010-04-15 11:00:17

jQuery is the best thing since sliced bread, but it's not always feasible to switch to a JS framework during an existing project.

Neil Aitken 2010-04-15 11:04:40

i am ;) i just wanted to figure out how to do it without jquery, but thanks!

2010-04-15 11:06:14

I am not going to downvote ya but I am sick to death of people replying to simple javascript questions, that in no way mention nor indicate a requirement for a lib, pushing jquery as the be all and end all. aaaaaaaaaaarrrrrrggggghhhh just answer the question. ;-)

Sky Sanders 2010-04-15 11:09:53

Adding a 20kb javascript file for this kind of tiny requirement is complete overkill

roryf 2010-04-15 11:26:48

Answer 5

A:

A quick way, if you just want to debug, would be move what you want to execute outside of a function.

<script type="text/javascript">
var text = document.getElementById('test').innerHTML;
var newtext = text.replace('', '');
alert(newtext);
</script>

NB. I'm not sure what you hope to achieve with text.replace('', '') ?

Dan Diplo 2010-04-15 11:00:45

i did that, but the alert wouldnt popup ;)just used text.replace('','') to shorten the codethanks

2010-04-15 11:07:24

Answer 6

A:

If you don't want to use jQuery, use native window.onload method:

<script type="text/javascript">
    function ReplaceText() {
        document.getElementById('test').innerHTML = document.getElementById('test').innerHTML.replace(/abc/g, "def");
    }
    window.onload = ReplaceText;
</script>

Used on the code:

<div id="test">abc abc</div>

Will give this output:

def def

rochal 2010-04-15 11:12:22

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