gibberish of French in asp.net mvc

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ASP.NET

MVC

CultureHelper.GetCultureValueByName("lbMemos") is equal to "mémo(s)" //mémo(s) is a french word
It display properly in .cshtml file
eg:
<p>CultureHelper.GetCultureValueByName("lbMemos")</p>//display as "mémo(s)"
But if you use javascript, you will get a gibberish
alert('@CultureHelper.GetCultureValueByName("lbMemos")') //alert "m&#233;mo(s)"
Not all french word have this problem, english or chinese don't have this problem.