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How to Loop Through a JavaScript Object

Topic: JavaScript / jQueryPrev|Next

Answer: Use the for...in Loop

You can simply use the for...in statement to loop through or iterates over all enumerable properties of an object in JavaScript. The for...in loop is specifically built for iterating object properties.

Let's try out the following example to understand how it basically works:

// Sample object
var obj = {
    make: "Ford",
    model: "Mustang",
    color: "red",
    year: 2021
};

// Iterate through object properties
for(var key in obj) {  
    document.write("<p>" + key + " -> " + obj[key] + "</p>"); 
}

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