javascript - XML update and Insert -


(xml) 

<leapdeck>   <user>     <id_user>1</id_user>      <name>adam</name>     <notif>200</notif> </user>  <user>     <id_user>2</id_user>     <name>budi</name>     <notif>100</notif> </user>  </leapdeck>

my question is..

i need update user's

its like, update adam's notif 200.

the last questions is...

how insert new user xml

  <user>     <id_user>3</id_user>      <name>brian</name>     <notif>3</notif> </user>


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