const container = document.querySelector("#editor");
const e = new eEditor(container, {
  language: "javascript",
  size: {
    w: "100%",
    h: "100%"
  },

  position: {
    x: "0%",
    y: "0%",
  },

  pad: 0,

  theme: ee.Themes.cool,
  lines: false
});

e.create();

The editor will then be created. The editor will not conform to the size of the container. The container is only used for easy removal of editors.

const container = document.querySelector("#editor");
const e = new eEditor(container, {
  language: "javascript",
  size: {
    w: "100%",
    h: "100%"
  },

  position: {
    x: "0%",
    y: "0%",
  },

  pad: 0,

  theme: ee.Themes.cool,
  lines: true
});

e.create();

Or toggled:

e.toggleLines()

const container = document.querySelector("#editor");
const e = new eEditor(container, {
  language: "javascript",
  size: {
    w: "100%",
    h: "100%"
  },

  position: {
    x: "0%",
    y: "0%",
  },

  pad: 0,

  theme: ee.Themes.cool,
  lines: true
});

e.Theme(ee.Themes.matrix)

e.create();

You don't need to use prebuilt themes. You can create your own themes. Source for matrix theme:

{
  "font": {
    "family": "monospace",
    "size": "18px"
  },
  "caret": {
    "color": "green"
  },
  "colors": {
    "text": "yellow",
    "background": "black"
  },
  "syntax": {}
}

{
  "font": {
    "family": "monospace",
    "size": "18px"
  },
  "caret": {
    "color": "green"
  },
  "colors": {
    "text": "yellow",
    "background": "black"
  },
  "syntax": {
      "keyword": "blue",
      "punctuation": "#FF0000"
  }
}

console.log(editor.p.innerText)

You can also modify the code:

editor.p.innerText = editor.p.innerText.split("\n").slice(0,5).join("\n")

And lastly, you can change the language for syntax highlighting.

editor.setLanguage("python")

Languages supported (thanks to prism):

• plaintext
• abap
• abnf
• actionscript
• ada
• agda
• al
• antlr4
• apacheconf
• apex
• apl
• applescript
• aql
• arduino
• arff
• armasm
• arturo
• asciidoc
• asm6502
• asmatmel
• aspnet
• autohotkey
• autoit
• avisynth
• avro-idl
• awk
• bash
• basic
• batch
• bbcode
• bbj
• bicep
• birb
• bison
• bnf
• bqn
• brainfuck
• brightscript
• bro
• bsl
• c
• cfscript
• chaiscript
• cil
• cilkc
• cilkcpp
• clike
• clojure
• cmake
• cobol
• coffeescript
• concurnas
• cooklang
• coq
• cpp
• crystal
• csharp
• cshtml
• csp
• css
• css-extras
• csv
• cue
• cypher
• d
• dart
• dataweave
• dax
• dhall
• diff
• django
• dns-zone-file
• docker
• dot
• ebnf
• editorconfig
• eiffel
• ejs
• elixir
• elm
• erb
• erlang
• etlua
• excel-formula
• factor
• false
• firestore-security-rules
• flow
• fortran
• fsharp
• ftl
• gap
• gcode
• gdscript
• gedcom
• gettext
• gherkin
• git
• glsl
• gml
• gn
• go
• go-module
• gradle
• graphql
• groovy
• haml
• handlebars
• haskell
• haxe
• hcl
• hlsl
• hoon
• hpkp
• hsts
• http
• ichigojam
• icon
• icu-message-format
• idris
• iecst
• ignore
• inform7
• ini
• io
• j
• java
• javadoc
• javadoclike
• javascript
• javastacktrace
• jexl
• jolie
• jq
• js-extras
• js-templates
• jsdoc
• json
• json5
• jsonp
• jsstacktrace
• jsx
• julia
• keepalived
• keyman
• kotlin
• kumir
• kusto
• latex
• latte
• less
• lilypond
• linker-script
• liquid
• lisp
• livescript
• llvm
• log
• lolcode
• lua
• magma
• makefile
• markdown
• markup
• markup-templating
• mata
• matlab
• maxscript
• mel
• mermaid
• metafont
• mizar
• mongodb
• monkey
• moonscript
• n1ql
• n4js
• nand2tetris-hdl
• naniscript
• nasm
• neon
• nevod
• nginx
• nim
• nix
• nsis
• objectivec
• ocaml
• odin
• opencl
• openqasm
• oz
• parigp
• parser
• pascal
• pascaligo
• pcaxis
• peoplecode
• perl
• php
• php-extras
• phpdoc
• plant-uml
• plsql
• powerquery
• powershell
• processing
• prolog
• promql
• properties
• protobuf
• psl
• pug
• puppet
• pure
• purebasic
• purescript
• python
• q
• qml
• qore
• qsharp
• r
• racket
• reason
• regex
• rego
• renpy
• rescript
• rest
• rip
• roboconf
• robotframework
• ruby
• rust
• sas
• sass
• scala
• scheme
• scss
• shell-session
• smali
• smalltalk
• smarty
• sml
• solidity
• solution-file
• soy
• sparql
• splunk-spl
• sqf
• sql
• squirrel
• stan
• stata
• stylus
• supercollider
• swift
• systemd
• t4-cs
• t4-templating
• t4-vb
• tap
• tcl
• textile
• toml
• tremor
• tsx
• tt2
• turtle
• twig
• typescript
• typoscript
• unrealscript
• uorazor
• uri
• v
• vala
• vbnet
• velocity
• verilog
• vhdl
• vim
• visual-basic
• warpscript
• wasm
• web-idl
• wgsl
• wiki
• wolfram
• wren
• xeora
• xml-doc
• xojo
• xquery
• yaml
• yang
• zig