javascript - jqueryを使用してコンテンツ変数から文字列を置き換える方法は？

Question

$content = "Please find the student results where Date of birth **BETWEEN** 2012-02-18 00:00:00 AND 2013-02-18 00:00:00  AND  name != "John" AND marks **BETWEEN** 40 AND 75 AND grade = 'A' AND AGE > 24"

太字の文字列を下の文字列に変更したい

BETWEENに IS BETWEEN

!=に IS NOT EQUAL TO

=に EQUAL TO

>にIS GREATER THAN

次のような結果を意味します：

出力："Please find the student results where Date of birth **IS BETWEEN** 2012-02-18 00:00:00 AND 2013-02-18 00:00:00 AND name **IS NOT EQUAL TO** "John" AND marks **IS BETWEEN** 40 AND 75 AND grade **EQUAL TO** 'A' AND AGE **IS GREATER THAN** 24"