jquery wysiwyg editor val acf
snippet in javascript

jquery wysiwyg editor val acf

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/* You have to find your ACF field, find the textarea within the editor,
get that ID, then setContent using TinyMCE JS API that's built in to
WordPress: */
let description = "Some text!";
let f = acf.getField("your_field_key");
let tinyID = f.$el.find("textarea").attr("id");
let tinyInstance = tinyMCE.editors[tinyID];
tinyInstance.setContent(description);