madebyj on "Add dataTable and javascript function"

Dear experts,

I am having trouble trying to use the javascript library 'dataTable'.

I have done this :
1 - build a child theme
2 - build functions.php in the child theme
3 - call javascript datatable libraries and a specific library with enqueue function.

A test function is working, so it seems OK but the rest is not working.

Here's my code on my page :

<div class="tableau">
<script type="text/javascript"><!--//--><![CDATA[//><!--
tableau();
//--><!]]></script>
</div>
<A href="javascript:;" onClick="test();">Texte1</A>

Here's my code on my specific library :

// Fonction de mise en forme de tableau
function tableau() {

	$(document).ready( function () {

	$('#sommets').dataTable( {
			"dom": 'T<"clear">lfrtip',
			"tableTools": {
				"sSwfPath": "/DataTables/extensions/TableTools/swf/copy_csv_xls_pdf.swf"
			}
		} );
		} );

}

function test() {

alert('fdfdsfds');

}

Firebug keeps saying my function tableau is not defined except when I erase all spaces like this :
<div class="tableau"><script type="text/javascript"><!--//--><![CDATA[//><!--tableau();//--><!]]></script></div>
...but then it is doing nothing.

I have tried to apply the best practice of this page https://codex.wordpress.org/Using_Javascript but I do not know how to make it work.

The function test is working but the other one is doing nothing. Do someone use datatable and could show me an example ?

Thank you very much for your help.

Ben