I would split the input on the single space occurring after the name and before the email address. Then, take a substring to isolate the email address.
var str = "chris <[email protected]>";
var parts = str.split(/[ ](?=<)/);
var name = parts[0];
var email = parts[1].substring(1, parts[1].length - 1);
console.log("name = " + name);
console.log("email_id = " + email);
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