Is the following javascript script problematic although it can load the desired result? Should document.writeln
be replaced by document.write
or even some other methods? I picked this idea up from the web http://www.wetlandpark.gov.hk/en/
function getheaderHTML() {
document.writeln(' <div id="nav">');
document.writeln(' <a href="index.html">number 1</a>|<a href="students.html">number 2</a>');
document.writeln(' </div>');
document.writeln(' <div id="header">');
document.writeln(' <img src="header.jpg" alt="testing" width=100% height=260>');
document.writeln(' </div>');
}
function getfooterHTML() {
document.writeln(' <div id="footer">');
document.writeln(' ©2016');
document.writeln(' </div>');
}
getheaderHTML();
getfooterHTML();
There is no much difference between write()
and writeln()
. Only difference is writeln()
adds a new line after each statement.
But for the above code having a new line or not doesn't make much of a difference as white spaces are neglected in HTML.
Also using document.write
or writeln
is not a good idea. I would suggest you to have 2 div
which act as a placeholder for injecting your header
and footer
HTML.
I would only suggest to refactor your code to
function getheaderHTML() {
var content = '<div id="nav"><a href="index.html">number 1</a>|<a href="students.html">number 2</a> </div><div id="header"> <img src="header.jpg" alt="testing" width=100% height=260></div>';
document.getElementById('pageheader').innerHTML = content;
}
function getfooterHTML(){
var content = '<div id="footer">©2016</div>';
document.getElementById('pageFooter').innerHTML = content;
}
getheaderHTML();
getfooterHTML();
<div id="pageheader">
</div>
<div id="BodyContainer">
</div>
<div id="pageFooter">
</div>