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- <html lang="en"><head>
- <meta charset="UTF-8">
- <title>Document</title>
- <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css">
- <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
- <script src="https://code.jquery.com/jquery-3.3.1.slim.min.js"></script>
- <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.3/umd/popper.min.js"></script>
- <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/js/bootstrap.min.js"></script>
- <style>
- .btn{
- padding:4px 24px;
- }
- #result{
- width:245px;
- margin-left:15px;
- margin-top:15px;
- margin-bottom:10px;
- }
- </style>
- <script>
- document.addEventListener('DOMContentLoaded', () => {
- let btns = document.querySelectorAll('.btn-default');
- btns.forEach(item => {
- item.addEventListener('click', (e) =>{
- // console.log(e.target.value);
- let pole = document.querySelectorAll('#result')[0];
- pole.value = pole.value + e.target.value;
- pole.dataset.current = pole.dataset.current + e.target.value;
- // pole.dataset.total = pole.dataset.current;
- });
- });
- let op = document.querySelectorAll('.btn-primary');
- op.forEach(m => {
- m.addEventListener('click', (e) => {
- let pole = document.querySelectorAll('#result')[0];
- if(e.target.value == '-' && pole.dataset.current == ''){
- pole.dataset.current = '-';
- pole.value = pole.value + '-';
- } else {
- switch(pole.dataset.operation){
- case '+': pole.value = parseInt(pole.dataset.total) + parseInt(pole.dataset.current); break;
- case '-': pole.value = parseInt(pole.dataset.total) - parseInt(pole.dataset.current);
- break;
- case '/': pole.value = parseInt(pole.dataset.total) / parseInt(pole.dataset.current); break;
- case 'x': pole.value = parseInt(pole.dataset.total) * parseInt(pole.dataset.current); break;
- default: console.log('nyama pyrva operacia'); break;
- }
- pole.dataset.operation = e.target.value;
- pole.dataset.total = pole.value;
- pole.dataset.current = '';
- pole.value = pole.value + e.target.value;
- }
- });
- });
- let pole = document.querySelectorAll('#result')[0];
- pole.addEventListener('input', (e) => {
- if(e.target.value == ''){
- e.target.dataset.operation = '';
- e.target.dataset.total = 0;
- e.target.dataset.current = '';
- }
- });
- });
- </script>
- </head>
- <body>
- <div class="container">
- <div class="row">
- <input type="text" class="form-control" value="" id="result" data-operation="" data-total="0" data-current="">
- <p> </p>
- </div>
- <div class="row">
- <div class="form-group col-lg-12">
- <input type="button" class="btn btn-default" value="7">
- <input type="button" class="btn btn-default" value="8">
- <input type="button" class="btn btn-default" value="9">
- <input type="button" class="btn btn-primary" value="/">
- </div>
- <div class="form-group col-lg-12">
- <input type="button" class="btn btn-default" value="4">
- <input type="button" class="btn btn-default" value="5">
- <input type="button" class="btn btn-default" value="6">
- <input type="button" class="btn btn-primary" value="x">
- </div>
- <div class="form-group col-lg-12">
- <input type="button" class="btn btn-default" value="1">
- <input type="button" class="btn btn-default" value="2">
- <input type="button" class="btn btn-default" value="3">
- <input type="button" class="btn btn-primary" value="-">
- </div>
- <div class="form-group col-lg-12">
- <input type="button" class="btn btn-default" value="0">
- <input type="button" class="btn btn-primary" value=".">
- <input type="button" class="btn btn-danger" value="=">
- <input type="button" class="btn btn-primary" value="+">
- </div>
- </div>
- </div>
- </body>
- </html>
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