JavaScript添加事件监听器
我已经用javascript制作了html。我们如何找出按下了哪个删除按钮JavaScript添加事件监听器,javascript,Javascript,我已经用javascript制作了html。我们如何找出按下了哪个删除按钮 <div id="maindiv"> <div id="product_1"> <input placeholder="Add Product Name" type="text"> <input placeholder="Cost per unit" type="number"> <input p
<div id="maindiv">
<div id="product_1">
<input placeholder="Add Product Name" type="text">
<input placeholder="Cost per unit" type="number">
<input placeholder="Number of products" type="number">
<button id="delete_1">Delete</button>
</div>
<div id="product_2">
<input placeholder="Add Product Name" type="text">
<input placeholder="Cost per unit" type="number">
<input placeholder="Number of products" type="number">
<button id="delete_2">Delete</button>
</div>
</div>
删去
删去
使用此
var btn=document.queryselectoral('button'))
btn.forEach(功能(项目){
item.addEventListener('单击',函数()){
log('clicked id:'+this.id);
});
});代码>
删去
删去
您可以试试这个。希望这有帮助
var buttons=document.getElementsByTagName(“按钮”);
对于(var i=0;i找出谁???EventListner在哪里?是的,这正是正确的。在“删除”按钮上添加事件侦听器,找到产品ID并执行删除