nl_tokens: 解析TeX ( KaTeX ) 科学公式 TeX ( KaTeX ) Renderer
pl_tokens: function ( ) { if ( timer === null ) { return this ; } this . previewContainer . <mask> ( "." + editormd . classNames . tex ) . each ( function ( ) { var tex = $ ( this ) ; editormd . $katex . render ( tex . text ( ) , tex [ 0 ] ) ; tex . find ( ".katex" ) . css ( "font-size" , "1.6em" ) ; } ) ; return this ; }