我正在创建一个基本数据库，该数据库仅存储在内存中，作为 Javascript 的练习。每个新行都有其相应的删除和编辑按钮。我现在的问题是如何让这些删除按钮发挥作用，当您单击其中一个按钮时，它会删除该行。这是我此时的代码:
Javascript
function onload(){
$("#addbutton").on("click",addRow);
$(".delete").onclick(function(){
$(this).closest('tr').remove();
});
var i = 1;
function addRow(){
var newRow = "<tr rowID='" + i + "'>"+"<td><div>"+$("#namebox").val()+
"</div></td>"+"<td><div>"+$("#surnamebox").val()+"</div></td>"+"<td><div>"+$("#agebox").val()+"<td><div><button id='" + i + "' class='delete' name='delete'type='button'>DELETE</button></div></td>"+"<td><div><button class='edit' name='edit'type='button'>EDIT</button></div></td><td><p>"+ i + "</p></td></tr>"; //Adds the row with content and
// buttons
$(newRow).appendTo("#maintable"); //Append the new row
// to the table
// Next three commands clear the input boxes
$("#namebox").val('');
$("#surnamebox").val('');
$("#agebox").val('');
// Add to the numer of rows in the table
i++;
}// addRow END
};
HTML
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Memory-Only Database</title>
<link rel="stylesheet" href="css/style.css">
<script src="js/script.js"></script>
<script
src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js">
</script>
<script src="https://ajax.googleapis.com/ajax/libs/jqueryui/1.12.1/jquery-
ui.min.js"></script>
</head>
<body onload="onload()">
<div id="header">
<h2>Memory-Only Database</h2>
</div>
<div id="input-table">
<table id="maintable" style="width: 60%">
<tr>
<th>Name</th>
<th>Surname</th>
<th>Age</th>
<th id="buttons1">buttons1</th>
<th id="buttons2">buttons2</th>
<th id="counter">counter</th>
</tr>
<tr>
<td>
<input id="namebox" name="name" type="text" value="">
</td>
<td>
<input id="surnamebox" name="surname" type="text" value="">
</td>
<td>
<input id="agebox" name="age" type="number" value="">
</td>
<td>
<button id="addbutton" name="add" type="button">ADD</button>
</td>
</tr>
</table>
</div>
</body>
</html>
CSS
body{
background-color: darkcyan;
}
div#header{
position: relative;
left: 30em;
width: 18em;
text-align: center;
}
div#input-table{
width:50em;
}
table,th,tr,td{
border: 1px solid black;
border-collapse: collapse;
}
td{
text-align: center;
}
th#buttons{
width: inherit;
}
最佳答案
您应该对删除按钮使用事件委托(delegate)。因为您正在动态添加按钮。
$(document).on("click",'.delete',function(){
$(this).closest('tr').remove();
});
function onload(){
$("#addbutton").on("click",addRow);
var i = 1;
function addRow(){
var newRow = "<tr rowID='" + i + "'>"+"<td><div>"+$("#namebox").val()+
"</div></td>"+"<td><div>"+$("#surnamebox").val()+"</div></td>"+"<td><div>"+$("#agebox").val()+"<td><div><button id='" + i + "' class='delete' name='delete'type='button'>DELETE</button></div></td>"+"<td><div><button class='edit' name='edit'type='button'>EDIT</button></div></td><td><p>"+ i + "</p></td></tr>";
//Adds the row with content and
// buttons
$(newRow).appendTo("#maintable"); //Append the new row
// to the table
// Next three commands clear the input boxes
$("#namebox").val('');
$("#surnamebox").val('');
$("#agebox").val('');
// Add to the numer of rows in the table
i++;
}// addRow END
};
$(document).on("click",'.delete',function(){
$(this).closest('tr').remove();
});body{
background-color: darkcyan;
}
div#header{
position: relative;
left: 30em;
width: 18em;
text-align: center;
}
div#input-table{
width:50em;
}
table,th,tr,td{
border: 1px solid black;
border-collapse: collapse;
}
td{
text-align: center;
}
th#buttons{
width: inherit;
}<script
src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js">
</script>
<script src="https://ajax.googleapis.com/ajax/libs/jqueryui/1.12.1/jquery-
ui.min.js"></script>
</head>
<body onload="onload()">
<div id="header">
<h2>Memory-Only Database</h2>
</div>
<div id="input-table">
<table id="maintable" style="width: 60%">
<tr>
<th>Name</th>
<th>Surname</th>
<th>Age</th>
<th id="buttons1">buttons1</th>
<th id="buttons2">buttons2</th>
<th id="counter">counter</th>
</tr>
<tr>
<td>
<input id="namebox" name="name" type="text" value="">
</td>
<td>
<input id="surnamebox" name="surname" type="text" value="">
</td>
<td>
<input id="agebox" name="age" type="number" value="">
</td>
<td>
<button id="addbutton" name="add" type="button">ADD</button>
</td>
</tr>
</table>
</div>关于javascript - JQuery - 如果单击删除按钮则删除表行，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/44872879/