检测使用JQuery从生成表中单击表行

I am trying to detect a click on the table rows, but I'm having problems. The table is generated from a javascript file and is placed inside a div inside the html.This div is named 'tableOutput'. My jquery click function will work if I set it to 'tableOutput', but I set it to '#myTable', or '#myTable tr' it will not do anything. Any advice? Thanks!

我试图检测表行的点击,但我遇到了问题。该表是从javascript文件生成的,并放在html内的div内。该div名为'tableOutput'。如果我将它设置为'tableOutput',我的jquery点击功能将起作用,但是我将它设置为'#myTable'或'#myTable tr'它将不会做任何事情。任何建议?谢谢!

Code that generates the table:

生成表的代码:

function loadUsers() {
$.getJSON("api/users", function(data) {
    var userTable = "\
        <table id=\"mt\" class=\"table table-hover\"><tr><th>User ID</th><th>User Name</th><th>Password</th><th>First Name</th><th>Last Name</th><th>Email</th><th>Phone</th><th>DOB</th><th>Enabled</th></tr>";
    var count = 1;
    $.each(data, function(key, value) {
        userTable = userTable + "<tr id=\"tr" + count + "\"><td>" + value["userID"] + "</td><td>" + value["userName"] + "</td><td>" + value["password"] + "</td><td>" + value["firstName"] + "</td><td>" + value["lastName"] + "</td><td>" + value["email"] + "</td><td>" + value["phone"] + "</td><td>" + value["dateOfBirth"] + "</td><td>" + value["enabled"] + "</td></tr>";
        count = count + 1;
    });
    userTable = userTable + "</table>";
    $("#tableOutput").html(userTable);
}
);
}

Code that detects the click:

检测点击的代码:

$(document).ready(function() {
$('#dp1').datepicker();
loadUsers();

$('#mt tr').on("click", function(){
    alert($(this).attr("id"));
});
});

1 个解决方案

#1

You need event delegation to bind event to dynamically added elements. Since you have static parent of the table the div with id tableOutput you can delegate event to it.

您需要事件委派才能将事件绑定到动态添加的元素。由于您具有表的静态父级,因此具有id tableOutput的div可以将事件委托给它。

$('#tableOutput').on("click", '#myTable tr', function(){
    alert($(this).attr("id"));
});

Delegated events

Delegated events have the advantage that they can process events from descendant elements that are added to the document at a later time. By picking an element that is guaranteed to be present at the time the delegated event handler is attached, you can use delegated events to avoid the need to frequently attach and remove event handlers, jQuery docs

委托事件的优点是,它们可以处理来自稍后添加到文档的后代元素的事件。通过选择在附加委托事件处理程序时保证存在的元素,您可以使用委派事件来避免频繁附加和删除事件处理程序,jQuery文档的需要

#1