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<!DOCTYPE html><html lang="en">
<head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <script src="https://cdn.tailwindcss.com"></script> <script src="//unpkg.com/alpinejs" defer></script> <title>Calculator</title> <script> document.addEventListener('alpine:init', () => { Alpine.data('calculator', () => ({ result: 'Ready', current: 0, previous: 0, operator: '=', logAll(message = 'LOG') { console.log(`${message}: ${this.previous} ${this.operator} ${this.current} => ${this.result}`) }, pressDigit(key) { this.current = this.current * 10 + key this.result = this.current if (this.operator == '=') { this.previous = 0 } this.logAll() }, pressPlus() { this.operator = '+' this.compute() this.result = this.operator this.logAll() }, pressMinus() { this.operator = '-' this.compute() this.result = this.operator this.logAll() }, pressEqual() { this.compute() this.operator = '=' this.result = `= ${this.previous}` this.previous = 0 this.logAll() }, compute() { this.logAll('BEFORE') switch (this.operator) { case '+': this.previous = this.previous + this.current break; case '-': this.previous = this.previous - this.current break; default: this.result = this.current this.previous = this.current } this.current = 0 }
})) console.log('Ready!') }) </script></head>
<body class="bg-zinc-400 flex h-screen justify-center items-start " x-data="calculator"> <div id='calculator' class="bg-slate-800 w-screen grid grid-cols-[3fr,1fr] h-screen "> <div id="screen" x-text="result" class="hover:ring-4 ring-blue-400 my-4 mx-2 p-8 text-right text-[8vh] text-white bg-black col-span-4 row-span-4 h-[20vh] rounded-xl border-double border-4 border-slate-800"> </div> <div class="grid grid-cols-3 gap-3 mb-4"> <template x-for="x in 3"> <template x-for="y in 3"> <button @click="pressDigit(x*3+y-3)" class="text-[10vh] rounded-2xl mx-2 active:bg-blue-400 hover:ring-4 ring-blue-400 border-double border-4 border-slate-800 bg-slate-600 h-full" x-text="x*3+y-3"> </button> </template> </template> <button @click="pressDigit(0)" class="text-[10vh] rounded-2xl mx-2 active:bg-blue-400 hover:ring-4 ring-blue-400 col-span-2 bg-slate-600 border-double border-4 border-slate-800 h-full">0</button> <button class="text-[10vh] rounded-2xl mx-2 active:bg-blue-400 hover:ring-4 ring-blue-400 bg-slate-600 border-double border-4 border-slate-800 h-full">.</button> </div>
<div class="grid grid-rows-4 gap-3 mb-4"> <!-- <button @click="pressMinus"
class="text-[10vh] rounded-2xl mx-2 active:bg-blue-400 hover:ring-4 ring-blue-400 border-double border-4 border-slate-600 bg-slate-900 text-white h-full">-</button> --> <button @click="pressPlus" class="text-[10vh] rounded-2xl mx-2 active:bg-blue-400 hover:ring-4 ring-blue-400 border-double border-4 border-slate-600 bg-slate-900 text-white h-full row-span-2 ">+</button> <button @click="pressEqual" class="text-[10vh] rounded-2xl mx-2 active:bg-blue-400 hover:ring-4 ring-blue-400 border-double border-4 border-slate-600 bg-slate-900 text-white h-full row-span-2 ">=</button> </div> </div>
</body>
</html>
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