javascript - 无法使用 parse.com 查询和 javascript SDK 搜索用户

Question

使用 parse.com 和 JavaScript SDK，我想创建一个查询来检查用户是否已存在。

这里有示例代码，我已采用并将其转换为以下代码块。我收到 Uncaught ReferenceError: username is not Defined 错误，我不明白为什么？

https://www.parse.com/docs/js_guide#users

var friendFinder = Parse.Object.extend("_User");
var query = new Parse.Query(Parse.User);
query.equalTo(username, "d"); // find users that match
query.find({
    success: function (friend) {
        if (friendName.length) {
            console.log("Success")
        }
    },
    error: function (error) {
        //Show if no user was found to match


    }
});

Answer 1

您忘记了“用户名”字段中的引号:

var friendFinder = Parse.Object.extend("_User");
var query = new Parse.Query(Parse.User);
query.equalTo("username", "d"); // find users that match
query.find({
    success: function (friend) {
        if (friendName.length) {
            console.log("Success")
        }
    },
    error: function (error) {
        //Show if no user was found to match


    }
});