jQuery - 在现有的 each() 事件中嵌套另一个 each() 循环不起作用
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【中文标题】jQuery - 在现有的 each() 事件中嵌套另一个 each() 循环不起作用【英文标题】:jQuery - Nesting another each() loop inside existing each() event not working 【发布时间】:2020-02-11 18:53:52 【问题描述】:我正在尝试从具有多个选项的 JSON 数据创建一个表,我在其中拆分数据并使用 .each() 循环遍历每个选项。
下面是我使用的 JSON 数据:
var StatJSON =
"Volvo":
"Options": "Option1-Black,car/Option2-Blue,car&bus"
,
"Mercedes":
"Options": "Option1-Blue,car/Option2-Blue,car&bus"
,
;
我面临的挑战是我需要在每个“选项”中创建另一个循环,以使用“&”作为分隔符来选择每个“车辆类型”(即 JSON 中的汽车、公共汽车)。我用来循环数据的 jQuery 如下(针对下面的相关语句放置 cmets):
jQuery('.divResult table tbody tr td').each(function ($)
if (jQuery(this).text() == 'Options') jQuery(this).nextAll("td").each(function ()
var data = jQuery(this).text();
var Options = data.split('/');
function HowToReach(data)
var html = '<table class="InnerTable">';
jQuery.each(Options, function(index, value)
var OptionNumber = value.split('-')[0];
var OptionData = value.split('-')[1];
var OptionColor = OptionData.split(',')[0];
var OptionTransport = OptionData.split(',')[1];
var OptionTransportArray = OptionTransport.split('&'); // <-- Splitting the transport options
for (i=0; i<OptionTransportArray.length; i++)
var OptionTransportEach = OptionTransport.split('&')[i]; // <-- Looping the options
html += '<tr><td colspan="2">'+ OptionNumber +'</td></tr>'
html += '<tr><td>Color:'+ OptionColor +'</td>'
html += '<td><span class="fas fa-'+OptionTransportEach+'"></span></td></tr>' // <-- Adding each option
);
html += '</table>'
return html;
jQuery(this).empty().append(HowToReach(data));
);
);
不幸的是,它不会遍历两个元素,只显示数组中的第 n 个元素,即在“Option2”的情况下只显示“总线”而不是“汽车”。
我哪里出错了,如何更正我的代码以确保循环显示每个元素,并用“&”符号分隔。
下面是完整的工作代码:
jQuery(document).ready(function($)
var StatJSON =
"Volvo":
"Options": "Option1-Black,car/Option2-Blue,car&bus"
,
"Mercedes":
"Options": "Option1-Blue,car/Option2-Blue,car&bus"
,
;
jQuery('#btnSubmit').click(function()
var data = [];
jQuery("#selection").find(':selected').each(function(e)
var this_input = jQuery(this);
if (this_input.is(':selected'))
data.push(this_input.val());
);
$('#divResult').empty().append(PrintTable(data));
jQuery('.divResult table tbody tr td').each(function($)
if (jQuery(this).text() == 'Options') jQuery(this).nextAll("td").each(function()
var data = jQuery(this).text();
var Options = data.split('/');
function HowToReach(data)
var html = '<table class="InnerTable">';
jQuery.each(Options, function(index, value)
var OptionNumber = value.split('-')[0];
var OptionData = value.split('-')[1];
var OptionColor = OptionData.split(',')[0];
var OptionTransport = OptionData.split(',')[1];
var OptionTransportArray = OptionTransport.split('&');
for (i = 0; i < OptionTransportArray.length; i++)
var OptionTransportEach = OptionTransport.split('&')[i];
html += '<tr><td colspan="2">' + OptionNumber + '</td></tr>'
html += '<tr><td>Color:' + OptionColor + '</td>'
html += '<td><span class="fas fa-' + OptionTransportEach + '"></span></td></tr>'
);
html += '</table>'
return html;
jQuery(this).empty().append(HowToReach(data));
);
);
function PrintTable(data)
var html = '<table class="compTable"><thead><tr><th>';
if (data && data.length)
html += '</th>';
jQuery.each(data, function(k, v)
html += '<th id="myHeader" class="header2">' + v + '</th>';
);
html += '</tr>';
html += '<tbody>';
jQuery.each(StatJSON[data[0]], function(k, v)
html += '<tr><td>' + k + '</td>';
jQuery.each(data, function(k2, v2)
html += '<td>' + StatJSON[data[k2]][k] + '</td>';
);
html += '</tr>';
);
else
html += 'No results found</td></tr>';
html += '</tbody></table>';
return html;
);
);
body
font-family: montserratbold, montserratregular, sans-serif;
.divResult
overflow: scroll;
position: relative;
.compTable
font-family: "Trebuchet MS", Arial, Helvetica, sans-serif;
margin: 10px;
border: 1px solid #222;
text-align: center;
.InnerTable
margin: 1px;
border: 1px solid #222;
text-align: center;
<html>
<head>
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script src='https://kit.fontawesome.com/a076d05399.js'></script>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.10.2/css/all.css" integrity="sha384-lZN37f5QGtY3VHgisS14W3ExzMWZxybE1SJSEsQp9S+oqd12jhcu+A56Ebc1zFSJ" crossorigin="anonymous">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.10.2/css/brands.css" integrity="sha384-lZN37f5QGtY3VHgisS14W3ExzMWZxybE1SJSEsQp9S+oqd12jhcu+A56Ebc1zFSJ" crossorigin="anonymous">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.10.2/css/fontawesome.css" integrity="sha384-lZN37f5QGtY3VHgisS14W3ExzMWZxybE1SJSEsQp9S+oqd12jhcu+A56Ebc1zFSJ" crossorigin="anonymous">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.10.2/css/regular.css" integrity="sha384-lZN37f5QGtY3VHgisS14W3ExzMWZxybE1SJSEsQp9S+oqd12jhcu+A56Ebc1zFSJ" crossorigin="anonymous">
</head>
<select id="selection" multiple="multiple">
<option value="Volvo">Volvo</option>
<option value="Mercedes">Mercedes</option>
<br />
<input id="btnSubmit" class="button" type="submit" value="submit" />
</select>
<br /><br />
<div id="divResult" class="divResult"></div>
【问题讨论】:
【参考方案1】:您需要将循环向下移动并基于它构建 html
jQuery(document).ready(function($)
var StatJSON =
"Volvo":
"Options": "Option1-Black,car/Option2-Blue,car&bus"
,
"Mercedes":
"Options": "Option1-Blue,car/Option2-Blue,car&bus"
,
;
jQuery('#btnSubmit').click(function()
var data = [];
jQuery("#selection").find(':selected').each(function(e)
var this_input = jQuery(this);
if (this_input.is(':selected'))
data.push(this_input.val());
);
$('#divResult').empty().append(PrintTable(data));
jQuery('.divResult table tbody tr td').each(function($)
if (jQuery(this).text() == 'Options') jQuery(this).nextAll("td").each(function()
var data = jQuery(this).text();
var Options = data.split('/');
function HowToReach(data)
var html = '<table class="InnerTable">';
jQuery.each(Options, function(index, value)
var OptionNumber = value.split('-')[0];
var OptionData = value.split('-')[1];
var OptionColor = OptionData.split(',')[0];
var OptionTransport = OptionData.split(',')[1];
var OptionTransportArray = OptionTransport.split('&');
console.log(OptionTransportArray);
html += '<tr><td colspan="2">' + OptionNumber + '</td></tr>'
html += '<tr><td>Color:' + OptionColor + '</td>'
html += '<td>'
for (i = 0; i < OptionTransportArray.length; i++)
html+= '<span class="fas fa-' + OptionTransport.split('&')[i] + '"></span>'
html+='</td></tr>';
);
html += '</table>'
return html;
jQuery(this).empty().append(HowToReach(data));
);
);
function PrintTable(data)
var html = '<table class="compTable"><thead><tr><th>';
if (data && data.length)
html += '</th>';
jQuery.each(data, function(k, v)
html += '<th id="myHeader" class="header2">' + v + '</th>';
);
html += '</tr>';
html += '<tbody>';
jQuery.each(StatJSON[data[0]], function(k, v)
html += '<tr><td>' + k + '</td>';
jQuery.each(data, function(k2, v2)
html += '<td>' + StatJSON[data[k2]][k] + '</td>';
);
html += '</tr>';
);
else
html += 'No results found</td></tr>';
html += '</tbody></table>';
return html;
);
);
body
font-family: montserratbold, montserratregular, sans-serif;
.divResult
overflow: scroll;
position: relative;
.compTable
font-family: "Trebuchet MS", Arial, Helvetica, sans-serif;
margin: 10px;
border: 1px solid #222;
text-align: center;
.InnerTable
margin: 1px;
border: 1px solid #222;
text-align: center;
<html>
<head>
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script src='https://kit.fontawesome.com/a076d05399.js'></script>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.10.2/css/all.css" integrity="sha384-lZN37f5QGtY3VHgisS14W3ExzMWZxybE1SJSEsQp9S+oqd12jhcu+A56Ebc1zFSJ" crossorigin="anonymous">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.10.2/css/brands.css" integrity="sha384-lZN37f5QGtY3VHgisS14W3ExzMWZxybE1SJSEsQp9S+oqd12jhcu+A56Ebc1zFSJ" crossorigin="anonymous">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.10.2/css/fontawesome.css" integrity="sha384-lZN37f5QGtY3VHgisS14W3ExzMWZxybE1SJSEsQp9S+oqd12jhcu+A56Ebc1zFSJ" crossorigin="anonymous">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.10.2/css/regular.css" integrity="sha384-lZN37f5QGtY3VHgisS14W3ExzMWZxybE1SJSEsQp9S+oqd12jhcu+A56Ebc1zFSJ" crossorigin="anonymous">
</head>
<select id="selection" multiple="multiple">
<option value="Volvo">Volvo</option>
<option value="Mercedes">Mercedes</option>
<br />
<input id="btnSubmit" class="button" type="submit" value="submit" />
</select>
<br /><br />
<div id="divResult" class="divResult"></div>
【讨论】:
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