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JavaScript

function checkIfEmailInString(text) { 
        var re = /(([^<>()[\]\\.,;:\s@\"]+(\.[^<>()[\]\\.,;:\s@\"]+)*)|(".+\"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))/;
        return re.test(text);
    }

var test = "The email is [email protected]";

alert(checkIfEmailInString(test))

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