小编Sir*_*yes的帖子

    // The array I'm searching through
    var statesArray = new Array();
    statesArray['WI'] = "Wisconsin";
    statesArray['MN'] = "Minnesota";
    statesArray['IL'] = "Illinois";

    // Now I'm trying to let the user search for the full state name from the two-letter abbreviation. 

    var stateSearch = prompt("enter a two letter state abbreviation")

    for(var key in statesArray){
        var value = statesArray[key]
        if(stateSearch == key){
            alert(value);
        }else{
            alert("try again");
        }
    }