Created
October 13, 2015 11:35
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Wilddog: 获取list中的第一个数据
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function makeList(ref) { | |
var fruits = ["banana", "apple", "grape", "orange"]; | |
for (var i = 0; i < fruits.length; i++) { | |
ref.push(fruits[i]); | |
} | |
} | |
function getFirstFromList(ref, cb) { | |
ref.startAt().limit(1).once("child_added", function(snapshot) { | |
cb(snapshot.val()); | |
}); | |
} | |
// Running this should popup an alert with "banana". | |
function go() { | |
var testRef = new Wilddog("https://example.wilddogio.com/"); | |
makeList(testRef); | |
getFirstFromList(testRef, function(val) { | |
alert(val); | |
}); | |
} |
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