jQuery 4 removes legacy browser support (such as IE11 support), but it also removes some APIs that are considered deprecated such as:
jQuery.isArray,jQuery.parseJSON,jQuery.trim,jQuery.type,jQuery.now,jQuery.isNumeric,jQuery.isFunction,jQuery.isWindow,jQuery.camelCase,jQuery.nodeName,jQuery.cssNumber,jQuery.cssProps, andjQuery.fx.interval.Use native equivalents like
Array.isArray(),JSON.parse(),String.prototype.trim(), andDate.now()instead.
This may affect custom scripts if they (or the custom jQuery libraries used) depend on the deprecated APIs.
Note that Trilium polyfills jQuery.isArray,
isFunctionand isPlainObject because
they were required by one of our dependencies (the autocomplete).
For more information, consult the official blog post.