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JSON Tutorial for Beginners Learn How to Program
Part 1 of learning JSON for beginners with Adam. JSON stands for JavaScript Object Notation. It is a lightweight format for creating and sending data objects. JSON is a part of JavaScript and not a separate entity, the notation syntax is built into the raw Javascript programming language as a subset. In this lesson you can become familiarized with assembling and grabbing specific data out of JSON format objects.
<!DOCTYPE html>
<html>
<body>
<script>
var obj1 = { user:"John", age:22, country:"United States" };
var obj2 = { user:"Will", age:27, country:"United Kingdom" };
var obj3 = { user:"Abiel", age:19, country:"Mexico" };
var obj4 = { u1:obj1, u2:obj2, u3:obj3 };
document.write(obj3.user+" lives in "+obj3.country);
obj3.country = "Italy";
document.write("<hr />");
document.write(obj3.user+" lives in "+obj3.country);
document.write("<hr />");
document.write(obj4.u2.user);
// document.write(obj4["u2"]["user"]);
document.write("<hr />");
var meats = ["beef","pork","lamb"];
var fruit = ["apple","plumb","grape","orange"];
var obj5 = { arr1:meats, arr2:fruit };
document.write(obj5.arr1[1]+" with "+obj5.arr2[0]+" is for dinner");
</script>
</body>
</html>