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Q&A How to uncollapse the first and second tiers of a link tree in JavaScript?

I wish to display the first and second branches of a link tree with JavaScript. I want to show these branches in a single action, instead of clicking each vertical arrow (link) anew. HTML examp...

2 answers  ·  posted 2y ago by deleted user  ·  last activity 2y ago by hkotsubo‭

Question javascript treeview
#4: Post edited by (deleted user) · 2022-04-10T11:06:51Z (almost 2 years ago)
  • I wish to display the first and second tiers of a link tree with JavaScript.
  • I want to show these tiers **in a single action**, instead of clicking each _vertical arrow_ (link) anew.
  • * [HTML example is available here](https://www.mediawiki.org/wiki/Special:CategoryTree?target=Category%3AConfigure&mode=all&namespaces=).
  • As can be read in the linked webpage, one can click the _vertical arrow_ to get the next branch (if there is one).
  • ## Code which I have tried and failed
  • ```javascript
  • document.querySelectorAll(".CategoryTreeToggle").forEach( (element)=>{
  • if (element.hasAttribute('data-ct-state', 'collapsed') ) {
  • element.click();
  • }
  • });
  • ```
  • For some reason, with the following code, **all branches, whether collapsed or *manually expanded***, will **collapse**.
  • How to uncollapse the first and second tiers of a link tree in JavaScript?
  • I wish to display the first and second branches of a link tree with JavaScript.
  • I want to show these branches **in a single action**, instead of clicking each _vertical arrow_ (link) anew.
  • * [HTML example is available here](https://www.mediawiki.org/wiki/Special:CategoryTree?target=Category%3AConfigure&mode=all&namespaces=).
  • As can be read in the linked webpage, one can click the _vertical arrow_ to get the next branch (if there is one).
  • ## Code which I have tried and failed
  • ```javascript
  • document.querySelectorAll(".CategoryTreeToggle").forEach( (element)=>{
  • if (element.hasAttribute('data-ct-state', 'collapsed') ) {
  • element.click();
  • }
  • });
  • ```
  • For some reason, with the following code, **all branches, whether collapsed or *manually expanded***, will **collapse**.
  • How to uncollapse the first and second branches of a link tree in JavaScript?
#3: Post edited by (deleted user) · 2022-04-10T10:14:02Z (almost 2 years ago)
  • How to expose an entire link tree with vanilla JavaScript?
  • How to uncollapse the first and second tiers of a link tree in JavaScript?
  • I wish to display or expose an entire link tree.
  • I want to show all branches **in a single action**, instead of clicking each _vertical arrow_ (link) anew.
  • * [HTML example is available here](https://www.mediawiki.org/wiki/Special:CategoryTree?target=Category%3AConfigure&mode=all&namespaces=).
  • As can be read in the linked webpage, one can click the _vertical arrow_ to get the next branch (if there is one).
  • ## Code which I have tried and failed
  • ```javascript
  • document.querySelectorAll(".CategoryTreeToggle").forEach( (element)=>{
  • if (element.hasAttribute('data-ct-state', 'collapsed') ) {
  • element.click();
  • }
  • });
  • ```
  • For some reason, with the following code, **all branches, whether collapsed or *manually expanded***, will **collapse**.
  • How to expose an entire link tree with vanilla JavaScript?<br>
  • In other words, how to show the an entire tree of clickable branches, with JavaScript?
  • I wish to display the first and second tiers of a link tree with JavaScript.
  • I want to show these tiers **in a single action**, instead of clicking each _vertical arrow_ (link) anew.
  • * [HTML example is available here](https://www.mediawiki.org/wiki/Special:CategoryTree?target=Category%3AConfigure&mode=all&namespaces=).
  • As can be read in the linked webpage, one can click the _vertical arrow_ to get the next branch (if there is one).
  • ## Code which I have tried and failed
  • ```javascript
  • document.querySelectorAll(".CategoryTreeToggle").forEach( (element)=>{
  • if (element.hasAttribute('data-ct-state', 'collapsed') ) {
  • element.click();
  • }
  • });
  • ```
  • For some reason, with the following code, **all branches, whether collapsed or *manually expanded***, will **collapse**.
  • How to uncollapse the first and second tiers of a link tree in JavaScript?
#2: Post edited by user avatar Alexei‭ · 2022-04-10T06:02:18Z (almost 2 years ago)
added relevant tag
#1: Initial revision by (deleted user) · 2022-04-09T18:44:48Z (almost 2 years ago)
How to expose an entire link tree with vanilla JavaScript?
I wish to display or expose an entire link tree.

I want to show all branches **in a single action**, instead of clicking each _vertical arrow_ (link) anew.

* [HTML example is available here](https://www.mediawiki.org/wiki/Special:CategoryTree?target=Category%3AConfigure&mode=all&namespaces=).

As can be read in the linked webpage, one can click the _vertical arrow_ to get the next branch (if there is one).

## Code which I have tried and failed

```javascript
document.querySelectorAll(".CategoryTreeToggle").forEach( (element)=>{
    if (element.hasAttribute('data-ct-state', 'collapsed') ) {
        element.click();
    }
});
```

For some reason, with the following code, **all branches, whether collapsed or *manually expanded***, will **collapse**.

How to expose an entire link tree with vanilla JavaScript?<br>
In other words, how to show the an entire tree of clickable branches, with JavaScript?