Codemirror Autoresize Demo

.CodeMirror { border: 1px solid #eee; height: auto; }

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Autoresize

Autoresize Demo

.CodeMirror { border: 1px solid #eee; height: auto; }

By setting an editor's height style to auto and giving the viewportMargin a value of Infinity , CodeMirror can be made to automatically resize to fit its content.

var editor = CodeMirror.fromTextArea(document.getElementById("code"), { lineNumbers: true, viewportMargin: Infinity });