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<style>
.btn {
border: 1px solid #4caf50;
font-size: 14px;
padding: 8px 12px;
color: #4caf50;
outline: none;
}
.btn:active {
background: #eee;
}
</style>
<button class="btn">
按鈕
</button>
<p></p>
<script>
var btn = document.querySelector('.btn');
var p = document.querySelector('p');
var total = 1;
btn.addEventListener('click', function() {
btn.innerText = ++total;
});
btn.addEventListener('click', function() {
p.innerText = total;
});
</script>
運行結果