js實現60s倒計時效果

適用於獲取驗證碼等其他場景，下面代碼直接粘貼句可以使用

// 60s獲取驗證碼的js與html
var timer = null;
var count = 60;
$('.box>button').click(function() {
var codeText = $('.code').text();
if (codeText == '獲取驗證碼') {
timer = setInterval(function(){
count--;
$('.code').text(count+'后獲取驗證碼');
if (count <=0) {
clearInterval(timer);
$('.code').text('獲取驗證碼');
}
},1000);
}
});
html:
<!-- 60s倒計時 -->
<div class='box'>
<button class='code'>獲取驗證碼</button>
</div>