The output will be: 012. The loop starts with i at 0 and appends each value of i to the result string. When i becomes 3, the break statement is executed, which immediately terminates the loop. Therefore, the values 0, 1, and 2 are added to the result string, but not 3 or any subsequent values. This demonstrates how the break statement can be used to exit a loop early based on a certain condition, which is a common pattern in JavaScript for avoiding unnecessary iterations or for finding a specific item in a collection.