如何使用CodeMirror动态切换模式？

this.editor = CodeMirror.fromTextArea(document.getElementById(\"testAreaCodeMirror\"), {
    lineNumbers: true,
    matchBrackets: true,
    styleActiveLine: true,
    theme:\"eclipse\",
    mode:language
});

this.editor.setOption(\"mode\", language);

setOption(\"mode\", <new mode>)

setOption

\"mode\"

setParser