How to change a data attribute (li_attr)?

[florianwetzl]

Hello,

first of all: jstree is a great plugin and great work, thank you!

I try to change a data-attribute on an existing node in jstree, but no answer i find worked for me. I found this, didnt work: How to update data attribute in JSTREE?

.jstree(true).get_node(item_id).li_attr.data-opened-before = true

I get the error: "Uncaught SyntaxError: Invalid left-hand side in assignment" Can anybody help?

I do use li_attr to add the attribute in the first place: li_attr: {"data-opened-before" : "false"} I do this when i initiate the jstree and the data-attribute is drawn and visible in frontend sourcecode.

Greetings,
Florian