How to loop through each key in an object.
var testObject = {
item1: "apple",
item2: "banana",
item3: "pear"
};
for (var thing in testObject){
var item = thing;
alert(item);
}
//alerts the keys
for (var thing in testObject){
var item = testObject[thing];
alert(item);
}
//alerts the value
When the object contains objects.
var testObject = {
"apple": {"weight": 20, "number": 5, "taste":"delicious"},
"banana": {"weight": 10, "number": 5, "taste":"delicious"},
"pear": {"weight": 50, "number": 5, "taste":"delicious"}
};
alert("alert the keys");
for (var key in testObject){
var temp = key;
alert(key);
}
alert("alert the sub keys");
for (var key in testObject){
var mainKey = testObject[key];
for (var subKey in mainKey){
var temp = subKey;
alert(temp);
}
}
alert("alert the sub values");
for (var key in testObject){
var mainKey = testObject[key];
for (var subKey in mainKey){
var temp = mainKey[subKey];
alert(temp);
}
}