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variable += 1 "is the equivalent of" variable = variable + 1
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let number = 1;
let increaseButton = document.querySelector('#button');
function addNumber(){
number++;
}
increaseButton.addEventlistener('click',addNumber);
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let number = 5; // Assuming the initial number is 5
number++; // Incrementing the number by 1
console.log(number); // Output: 6