Concat string in Jquery

Hi Experts,
How can I concat 3 strings in jQuery? I am using MVC and C#.

var msg1= "Please provide an email address that has a business domain. Email domains at ";
var msg2 = "require further review by the program and will cause a delay in your application being approved."
var DomainName ="yahoo.com"

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I want msg1 + DomainName  +msg2.
Thanks in advance