how to compare two strings in javascript if condition

Question

I am having trouble recalling how to compare these two strings in an if statement. What I am trying to do is check if my variable compare equals page1 or page2 if not, go to the else statement.

 var compare = "page3";

if (compare === "page1" || "page2") {

  document.body.innerHTML = "github url";

} else {

  document.body.innerHTML = "non-github url";

}

Answer 1

You could check every option 

if (compare === "page1" || compare === "page2") {

Or you could use an array and check with an existential quantifier like Array#some against, like

if (["page1", "page2"].some(a => a === compare)) {

var compare = "page3";

if (compare === "page1" || compare === "page2") {

    document.body.innerHTML = "github url";

} else {

    document.body.innerHTML = "non-github url";

}

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