Actually use xml with ajax

[mikemastah]

I was wondering how would I do something like this with ajax.

I have a variable (user input) 'uuc' and i want the value 'phe' returned

this is my xml file:

 

<aminoacids>

<mrnacodes>

<ID>2</ID>

<mrna>uuc</mrna>

<aminocode>phe</aminocode>

</mrnacodes>

<mrnacodes>

<ID>1</ID>

<mrna>uuu</mrna>

<aminocode>phe</aminocode>

</mrnacodes>

<mrnacodes>

<ID>3</ID>

<mrna>uua</mrna>

<aminocode>leu</aminocode>

</mrnacodes>

etc.....

</aminoacids>

[Floydian]

Re: Actually use xml with ajax

Most people I know use a javascript/ajax library that will take the xml and parse it for you, turning it into a javascript object.

You would then be able to access all those fields just like any other javascript object.

[a_bertrand]

Re: Actually use xml with ajax

I would personally use JSon instead of XML for the good reason it takes less space, and is easier / faster to decode by Javascript:

http://www.json.org/js.html

The quickest way:

mydata=('(' + myJSONtext + ')');

If you want to keep XML:

http://www.captain.at/howto-ajax-process-xml.php

[mikemastah]

Re: Actually use xml with ajax

JSON looks pretty hard :) so how would I do the parser thing?

the problem is that I do not have access to PHP, MySQL, etc. only javascript.

I could rewrite the xml file to

<aminoacids>

<uuc>

<aminocode>phe</aminocode>

</uuc>

<uuu>

<aminocode>phe</aminocode>

</uuu>

<uua>

<aminocode>leu</aminocode>

</uua>

etc...

</aminoacids>

would that be easier?

[a_bertrand]

Re: Actually use xml with ajax

The JSon parser is just matter of doing an eval in Javascript.

To write JSON from PHP:

echo "myJSObject={name:'value',name2:'value',name3:1,jsArray:['a','b','c']}";

[mikemastah]

Re: Actually use xml with ajax

But how would I use JSON for what I need?

To be completely honest I have no clue what an eval is...

[a_bertrand]

Re: Actually use xml with ajax

eval in Javascript let you run a javascript script as it was a javascript code. So basically you feed your JSon to the eval and you get the object back.

I would suggest you to check some tutorials websites how to do those things.

[mikemastah]

Re: Actually use xml with ajax

ok thanks for the help, Issue is solved.