谢谢你的帮助。我在 Web 应用程序中有一系列用于 UI 目的的表单元素。我正在使用 jQuery 创建元素并添加侦听器。#topbar DIV 中的控件在事件发生时不会被监听，但 #sidebar DIV 中的控件会被监听。我不确定为什么。能帮忙吗，谢谢。下面是创建控件的函数...
function constructToolbars(){
//----------------------------TOPBAR-------------
//ZONE
$('#topbar').html('ZONE: ');
var zoneRadios = ["All", "None"];
var zoneRadio;
for(var i=0; i<zoneRadios.length; i+=1){
zoneRadio = zoneRadios[i];
$('<input />', {
type: 'radio',
id: 'zone' + zoneRadio, name: "zoneRadios", value: zoneRadio,
checked: zoneRadio === 'All'
}).appendTo('#topbar');
$('<label />', {
'for': 'zone' + zoneRadio, text: zoneRadio
}).appendTo('#topbar');
}
//THIS LISTENER IS NOT TRIGGERED WHEN USER CHANGES
$( "input:radio[name=zoneRadios]" ).on("change", readRadios);
var regions = ART.regions;
var region;
for(var i=0; i<regions.length; i+=1){
region = regions[i];
$('<input />', {
type: 'checkbox', "class": "zones",
id: 'zone' + region, name: region, value: region,
checked: true
}).appendTo('#topbar');
$('<label />', {
'for': 'zone' + region, text: region
}).appendTo('#topbar');
}
//THIS LISTENER IS NOT TRIGGERED WHEN USER CHANGES
$('.zones').on("change", readToolbars);
//TIME
topbar.innerHTML += " ---- TIME: ";
var timeRadios = ["Current", "Custom"];
var timeRadio;
for(var i=0; i<timeRadios.length; i+=1){
timeRadio = timeRadios[i];
$('<input />', {
type: 'radio',
id: 'time' + timeRadio, name: "timeRadios", value: timeRadio,
checked: timeRadio === 'Current'
}).appendTo('#topbar');
$('<label />', {
'for': 'time' + timeRadio, text: timeRadio
}).appendTo('#topbar');
}
//THIS LISTENER IS NOT TRIGGERED WHEN USER CHANGES
$( "input:radio[name=timeRadios]" ).on("change", readRadios);
topbar.innerHTML += ": ";
var dateFields = ["From", "To"];
var dateField;
for(var i=0; i<dateFields.length; i+=1){
dateField = dateFields[i];
$('<label />', {
'for': 'date' + dateField, text: dateField
}).appendTo('#topbar');
$('<input />', {
type: 'date', "class": "times",
id: 'date' + dateField, name: dateField, value: "<?php echo date('Y-m-d', strtotime(date('Y/m/d'))); ?>",
}).appendTo('#topbar');
}
$('<input />', {
type: 'submit', "class": "times",
id: 'dateGo', name: 'timeGo', value: 'Go',
}).appendTo('#topbar');
//THIS LISTENER IS NOT TRIGGERED WHEN USER CHANGES
$('.times').on("change", readToolbars);
//------------------SIDEBAR------------------
//PLAYERS
$('<p>',{text: 'PLAYERS'}).appendTo('#sidebar');
var playerRadios = ["All", "None"];
var playerRadio;
for(var i=0; i<playerRadios.length; i+=1){
playerRadio = playerRadios[i];
$('<input />', {
type: 'radio',
id: 'player' + playerRadio, name: "playerRadios", value: playerRadio,
checked: playerRadio === 'All'
}).appendTo('#sidebar');
$('<label />', {
'for': 'player' + playerRadio, text: playerRadio
}).appendTo('#sidebar');
}
//add event listener to this set of radio buttons
$( "input:radio[name=playerRadios]" ).on("change", readRadios);
var players = [];
var numReviewers = ART.currentReviewers.length;
ART.currentReviewers.sort(byAscending('loginName'));
for (var i=0; i<numReviewers; i+=1){
players.push(ART.currentReviewers[i].loginName);
}
var player;
for(var i=0; i<numReviewers; i+=1){
player = players[i];
$('<br />').appendTo('#sidebar');
$('<input />', {
type: 'checkbox', "class": "players",
id: 'player' + player, name: player, value: player,
}).appendTo('#sidebar');
$('<label />', {
'for': 'zone' + player, text: player
}).appendTo('#sidebar');
}
//add event listener to checkbox elements of this class
$('.players').on("change", readToolbars);
//ACTIVITY
$('<p>',{text: 'ACTIVITY'}).appendTo('#sidebar');
var activityRadios = ["All", "None"];
var activityRadio;
for(var i=0; i<activityRadios.length; i+=1){
activityRadio = activityRadios[i];
$('<input />', {
type: 'radio',
id: 'activity' + activityRadio, name: "activityRadios", value: activityRadio,
checked: activityRadio === 'All'
}).appendTo('#sidebar');
$('<label />', {
'for': 'activity' + activityRadio, text: activityRadio
}).appendTo('#sidebar');
}
//add event listener to this set of radio buttons
$( "input:radio[name=activityRadios]" ).on("change", readRadios);
var activities = ART.alertCategories;
activities.unshift("touches");
var numActivities = activities.length;
var activity;
for(var i=0; i<numActivities; i+=1){
activity = activities[i];
$('<br />').appendTo('#sidebar');
$('<input />', {
type: 'checkbox', "class": "activities",
id: 'activity' + activity, name: activity, value: activity,
}).appendTo('#sidebar');
$('<label />', {
'for': 'activity' + activity, text: activity
}).appendTo('#sidebar');
}
//add event listener to checkbox elements of this class
$('.activities').on("change", readToolbars);
}