从HTML表中的JSON url加载数据而不重复

时间：2017-01-08 20:37:01

标签： javascript html

我创建了表，我已经解析了JSON url中的数据（在片段中我更改了它以使其工作）现在我只想加载唯一值。例如＆＃34;黛布拉＆＃34;可以看两次。

＆＃13;
＆＃13; 
$(function() { 
    var data = [{"id":2.2,"first_name":"Debra","last_name":"Rodriguez","email":"drodriguez0@admin.ch","gender":"Female","ip_address":"90.22.159.108"},
{"id":2,"first_name":"Julie","last_name":"Lynch","email":"jlynch1@tumblr.com","gender":"Female","ip_address":"54.182.62.180"},
{"id":3,"first_name":"Norma","last_name":"Washington","email":"nwashington2@theatlantic.com","gender":"Female","ip_address":"70.163.106.64"},
{"id":4,"first_name":"Bobby","last_name":"Castillo","email":"bcastillo3@nbcnews.com","gender":"Male","ip_address":"91.202.59.171"},
{"id":5,"first_name":"Henry","last_name":"Chavez","email":"hchavez4@chronoengine.com","gender":"Male","ip_address":"32.237.37.185"},
{"id":6,"first_name":"Debra","last_name":"Howard","email":"showard5@stumbleupon.com","gender":"Female","ip_address":"17.217.42.49"},
{"id":7,"first_name":"Jason","last_name":"Powell","email":"jpowell6@telegraph.co.uk","gender":"Male","ip_address":"14.81.195.117"},
{"id":8,"first_name":"Sean","last_name":"Burns","email":"sburns7@hp.com","gender":"Male","ip_address":"213.164.85.212"},
{"id":9,"first_name":"Jacqueline","last_name":"Gordon","email":"jgordon8@bloglines.com","gender":"Female","ip_address":"18.251.62.55"},
{"id":10,"first_name":"Russell","last_name":"Richards","email":"rrichards9@com.com","gender":"Male","ip_address":"27.226.59.80"},
{"id":11,"first_name":"Albert","last_name":"Perkins","email":"aperkinsa@hc360.com","gender":"Male","ip_address":"243.122.251.248"},
{"id":12,"first_name":"Michael","last_name":"Willis","email":"mwillisb@deviantart.com","gender":"Male","ip_address":"252.197.211.230"},
{"id":13,"first_name":"Joan","last_name":"Hamilton","email":"jhamiltonc@weebly.com","gender":"Female","ip_address":"204.70.110.117"},
{"id":14,"first_name":"Eric","last_name":"Garcia","email":"egarciad@yahoo.co.jp","gender":"Male","ip_address":"178.221.216.3"},
{"id":15,"first_name":"Frank","last_name":"Olson","email":"folsone@amazon.co.uk","gender":"Male","ip_address":"245.25.170.33"},
{"id":16,"first_name":"Kelly","last_name":"Fuller","email":"kfullerf@tripod.com","gender":"Female","ip_address":"199.209.173.51"},
{"id":17,"first_name":"Frank","last_name":"Cook","email":"fcookg@google.com","gender":"Male","ip_address":"58.30.243.1"},
{"id":18,"first_name":"Alan","last_name":"Rice","email":"ariceh@sciencedirect.com","gender":"Male","ip_address":"44.231.199.117"},
{"id":19,"first_name":"Mark","last_name":"Greene","email":"mgreenei@paypal.com","gender":"Male","ip_address":"45.34.44.2"},
{"id":20,"first_name":"Charles","last_name":"King","email":"ckingj@clickbank.net","gender":"Male","ip_address":"237.30.205.186"}];

            var tr;
           
            $.each(data, function(key, val) {
                tr = $('<tr/>');
                tr.append('<td class="name" rel="' + val.first_name + '">' + val.first_name + '</td>');
                $('table').append(tr);
            });
        });
＆＃13; 
h1{
  font-size: 30px;
  color: #fff;
  text-transform: uppercase;
  font-weight: 300;
  text-align: center;
  margin-bottom: 15px;
}
table{
  width:100%;
  table-layout: fixed;
}
.tbl-header{
  background-color: rgba(255,255,255,0.3);
 }
.tbl-content{
  height:300px;
  overflow-x:auto;
  margin-top: 0px;
}

th{
  padding: 20px 15px;
  text-align: left;
  font-weight: 500;
  font-size: 12px;
  color: #fff;
  text-transform: uppercase;
}
td{
  padding: 10px;
  text-align: left;
  vertical-align:middle;
  font-weight: 300;
  font-size: 12px;
  color: #fff;

}

tr:nth-child(odd) td {
  background:#2cc3ce;
  color:#0d3852;
}

/* demo styles */

@import url(http://fonts.googleapis.com/css?family=Roboto:400,500,300,700);
body{
  background: #0d3852;
  font-family: 'Roboto', sans-serif;
}
section{
  margin: 50px;
}

input {
    max-width:50px;
    text-align: left;
    border: 1px solid #aaa;
    background-color: #fff;
    padding: 5px 20px 5px 5px;
    margin-top: 1px;
    font-size: 13px;
}

*,
*:after,
*::before {
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
}

.ac-custom {
	padding: 0 1em;
	max-width: 900px;
	margin: 0 auto;
}

.ac-custom h2 {
	font-size: 1em;
	font-weight: 300;
	padding: 0 0 0.5em;
	margin: 0 0 30px;
	color:#0d3852;
}

.ac-custom ul,
.ac-custom ol {
	list-style: none;
	padding: 0;
	margin: 0 auto;
	max-width: 800px;
}

.ac-custom li {
	margin: 0 auto;
	padding: 0.5em 0;
	position: relative;
}

.ac-custom label {
	display: inline-block;
	position: relative;
	font-size: 1em;
	padding: 0 0 0 80px;
	vertical-align: top;
	color: #0d3852;
	cursor: pointer;
	-webkit-transition: color 0.3s;
	transition: color 0.3s;
}

.ac-custom input[type="checkbox"],
.ac-custom input[type="radio"],
.ac-custom label::before {
	width: 20px;
	height: 20px;
	top: 50%;
	left: 0;
	margin-top: -12px;
	position: absolute;
	cursor: pointer;
}

.ac-custom input[type="checkbox"],
.ac-custom input[type="radio"] {
	opacity: 0;
	-webkit-appearance: none;
	display: inline-block;
	vertical-align: middle;
	z-index: 100;
}

.ac-custom label::before {
	content: '';
	border: 1px solid #0d3852;
	-webkit-transition: opacity 0.3s;
	transition: opacity 0.3s;
}

.ac-radio label::before {
	border-radius: 50%;
}

.ac-custom input[type="checkbox"]:checked + label,
.ac-custom input[type="radio"]:checked + label {
	color: #fff;
} 

.ac-custom input[type="checkbox"]:checked + label::before,
.ac-custom input[type="radio"]:checked + label::before {
	opacity: 0.8;
}

/* General SVG and path styles */

.ac-custom svg {
	position: absolute;
	width: 20px;
	height: 20px;
	top: 50%;
	margin-top: -12px;
	left: 0px;
	pointer-events: none;
}

.ac-custom svg path {
	stroke: #0d3852;
	stroke-width: 13px;
	stroke-linecap: round;
	stroke-linejoin: round;
	fill: none;
}

/* Specific input, SVG and path styles */

/* Circle */
.ac-circle input[type="checkbox"],
.ac-circle input[type="radio"],
.ac-circle label::before {
	width: 30px;
	height: 30px;
	margin-top: -15px;
	left: 10px;
	position: absolute;
}

.ac-circle label::before {
	background-color: #fff;
	border: none;
}

.ac-circle svg {
	width: 70px;
	height: 70px;
	margin-top: -35px;
	left: -10px;
}

.ac-circle svg path {
	stroke-width: 5px;
} 

/* Box Fill */
.ac-boxfill svg path {
	stroke-width: 8px;
} 

/* Swirl */
.ac-swirl svg path {
	stroke-width: 8px;
}

/* List */
.ac-list ol {
	list-style: decimal;
	list-style-position: inside;
}

.ac-list ol li {
	font-size: 2em;
	padding: 1em 1em 0 2em;
	text-indent: -40px;
}

.ac-list ol li label {
	font-size: 0.5em;
	text-indent: 0;
	padding-left: 30px;
}

.ac-list label::before {
	display: none;
}

.ac-list svg {
	width: 100%;
	height: 80px;
	left: 0;
	top: 1.2em;
	margin-top: 0px;
}

.ac-list svg path {
	stroke-width: 4px;
}

.row {
  margin-left: -15px;
  margin-right: -15px;
  margin-top:0;
}
.col-sm-4 {
  position: relative;
  min-height: 1px;
  padding-left: 15px;
  padding-right: 15px;
  padding-bottom: 30px;
}

@media (min-width: 768px) {
  .col-sm-4 {
    float: left;
  }

  .col-sm-4 {
    width: 33.33333333%;
  } 
 
 .filter-columns {
	background-color:#2cc3ce;
 }
 
 .filter-columns-alt {
	background-color:#78D9E0;
	min-height:256px;
 }

ul,li { 
	margin:0; 
	padding:0; 
	list-style:none;
}

.label {
 	color:#000;
 	font-size:16px;
}
＆＃13; 
  <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
  <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.4/jquery.min.js"></script>

<table>
  <thead>
    <tr id="ProductID" class="first">
        <th>NAME</th>
    </tr>
  </thead>
  <tbody> </tbody>
</table>
＆＃13;
＆＃13;
＆＃13;

是否包含功能或是否必须包含声明？此外，请注意我希望代码在某种程度上快速而且不是很慢。

2 个答案:

答案 0 :(得分：1)

如果您只需要第一个名称，则可以将每个名称添加到索引数组中，只有在名称不在索引数组中时才打印该名称。在代码中添加四行将实现此目的。

       var tr;
       var alreadyused = []; //This creates an array
        $.each(data, function(key, val) {
            if ($.inArray(val.first_name, alreadyused) == -1) { // This checks if first name already in array
                tr = $('<tr/>');
                tr.append('<td class="name" rel="' + val.first_name + '">' + val.first_name + '</td>');
                $('table').append(tr);
                alreadyused.push(val.first_name); // This adds firstname to array           
            }
        });
    });

如果您最终要使用多个字段，最好使用多维关联数组。

答案 1 :(得分：0)

一种方法是使用filter数组json associative数组。

var seenNames = {};
data = data.filter(function(currentObject) {
    if (currentObject.first_name in seenNames) { //Checks if first_name already in array.
       return false;
    } else {
       seenNames[currentObject.first_name] = true;
       return true;
    } 
});


$(function() { 
    var data = [{"id":2.2,"first_name":"Debra","last_name":"Rodriguez","email":"drodriguez0@admin.ch","gender":"Female","ip_address":"90.22.159.108"},
{"id":2,"first_name":"Julie","last_name":"Lynch","email":"jlynch1@tumblr.com","gender":"Female","ip_address":"54.182.62.180"},
{"id":3,"first_name":"Norma","last_name":"Washington","email":"nwashington2@theatlantic.com","gender":"Female","ip_address":"70.163.106.64"},
{"id":4,"first_name":"Bobby","last_name":"Castillo","email":"bcastillo3@nbcnews.com","gender":"Male","ip_address":"91.202.59.171"},
{"id":5,"first_name":"Henry","last_name":"Chavez","email":"hchavez4@chronoengine.com","gender":"Male","ip_address":"32.237.37.185"},
{"id":6,"first_name":"Debra","last_name":"Howard","email":"showard5@stumbleupon.com","gender":"Female","ip_address":"17.217.42.49"},
{"id":7,"first_name":"Jason","last_name":"Powell","email":"jpowell6@telegraph.co.uk","gender":"Male","ip_address":"14.81.195.117"},
{"id":8,"first_name":"Sean","last_name":"Burns","email":"sburns7@hp.com","gender":"Male","ip_address":"213.164.85.212"},
{"id":9,"first_name":"Jacqueline","last_name":"Gordon","email":"jgordon8@bloglines.com","gender":"Female","ip_address":"18.251.62.55"},
{"id":10,"first_name":"Russell","last_name":"Richards","email":"rrichards9@com.com","gender":"Male","ip_address":"27.226.59.80"},
{"id":11,"first_name":"Albert","last_name":"Perkins","email":"aperkinsa@hc360.com","gender":"Male","ip_address":"243.122.251.248"},
{"id":12,"first_name":"Michael","last_name":"Willis","email":"mwillisb@deviantart.com","gender":"Male","ip_address":"252.197.211.230"},
{"id":13,"first_name":"Joan","last_name":"Hamilton","email":"jhamiltonc@weebly.com","gender":"Female","ip_address":"204.70.110.117"},
{"id":14,"first_name":"Eric","last_name":"Garcia","email":"egarciad@yahoo.co.jp","gender":"Male","ip_address":"178.221.216.3"},
{"id":15,"first_name":"Frank","last_name":"Olson","email":"folsone@amazon.co.uk","gender":"Male","ip_address":"245.25.170.33"},
{"id":16,"first_name":"Kelly","last_name":"Fuller","email":"kfullerf@tripod.com","gender":"Female","ip_address":"199.209.173.51"},
{"id":17,"first_name":"Frank","last_name":"Cook","email":"fcookg@google.com","gender":"Male","ip_address":"58.30.243.1"},
{"id":18,"first_name":"Alan","last_name":"Rice","email":"ariceh@sciencedirect.com","gender":"Male","ip_address":"44.231.199.117"},
{"id":19,"first_name":"Mark","last_name":"Greene","email":"mgreenei@paypal.com","gender":"Male","ip_address":"45.34.44.2"},
{"id":20,"first_name":"Charles","last_name":"King","email":"ckingj@clickbank.net","gender":"Male","ip_address":"237.30.205.186"}];
var seenNames = {};
data = data.filter(function(currentObject) {
    if (currentObject.first_name in seenNames) {
        return false;
    } else {
        seenNames[currentObject.first_name] = true;
        return true;
    }
});
            var tr;
           
            $.each(data, function(key, val) {
                tr = $('<tr/>');
                tr.append('<td class="name" rel="' + val.first_name + '">' + val.first_name + '</td>');
                $('table').append(tr);
            });
        });
h1{
  font-size: 30px;
  color: #fff;
  text-transform: uppercase;
  font-weight: 300;
  text-align: center;
  margin-bottom: 15px;
}
table{
  width:100%;
  table-layout: fixed;
}
.tbl-header{
  background-color: rgba(255,255,255,0.3);
 }
.tbl-content{
  height:300px;
  overflow-x:auto;
  margin-top: 0px;
}

th{
  padding: 20px 15px;
  text-align: left;
  font-weight: 500;
  font-size: 12px;
  color: #fff;
  text-transform: uppercase;
}
td{
  padding: 10px;
  text-align: left;
  vertical-align:middle;
  font-weight: 300;
  font-size: 12px;
  color: #fff;

}

tr:nth-child(odd) td {
  background:#2cc3ce;
  color:#0d3852;
}

/* demo styles */

@import url(http://fonts.googleapis.com/css?family=Roboto:400,500,300,700);
body{
  background: #0d3852;
  font-family: 'Roboto', sans-serif;
}
section{
  margin: 50px;
}

input {
    max-width:50px;
    text-align: left;
    border: 1px solid #aaa;
    background-color: #fff;
    padding: 5px 20px 5px 5px;
    margin-top: 1px;
    font-size: 13px;
}

*,
*:after,
*::before {
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
}

.ac-custom {
	padding: 0 1em;
	max-width: 900px;
	margin: 0 auto;
}

.ac-custom h2 {
	font-size: 1em;
	font-weight: 300;
	padding: 0 0 0.5em;
	margin: 0 0 30px;
	color:#0d3852;
}

.ac-custom ul,
.ac-custom ol {
	list-style: none;
	padding: 0;
	margin: 0 auto;
	max-width: 800px;
}

.ac-custom li {
	margin: 0 auto;
	padding: 0.5em 0;
	position: relative;
}

.ac-custom label {
	display: inline-block;
	position: relative;
	font-size: 1em;
	padding: 0 0 0 80px;
	vertical-align: top;
	color: #0d3852;
	cursor: pointer;
	-webkit-transition: color 0.3s;
	transition: color 0.3s;
}

.ac-custom input[type="checkbox"],
.ac-custom input[type="radio"],
.ac-custom label::before {
	width: 20px;
	height: 20px;
	top: 50%;
	left: 0;
	margin-top: -12px;
	position: absolute;
	cursor: pointer;
}

.ac-custom input[type="checkbox"],
.ac-custom input[type="radio"] {
	opacity: 0;
	-webkit-appearance: none;
	display: inline-block;
	vertical-align: middle;
	z-index: 100;
}

.ac-custom label::before {
	content: '';
	border: 1px solid #0d3852;
	-webkit-transition: opacity 0.3s;
	transition: opacity 0.3s;
}

.ac-radio label::before {
	border-radius: 50%;
}

.ac-custom input[type="checkbox"]:checked + label,
.ac-custom input[type="radio"]:checked + label {
	color: #fff;
} 

.ac-custom input[type="checkbox"]:checked + label::before,
.ac-custom input[type="radio"]:checked + label::before {
	opacity: 0.8;
}

/* General SVG and path styles */

.ac-custom svg {
	position: absolute;
	width: 20px;
	height: 20px;
	top: 50%;
	margin-top: -12px;
	left: 0px;
	pointer-events: none;
}

.ac-custom svg path {
	stroke: #0d3852;
	stroke-width: 13px;
	stroke-linecap: round;
	stroke-linejoin: round;
	fill: none;
}

/* Specific input, SVG and path styles */

/* Circle */
.ac-circle input[type="checkbox"],
.ac-circle input[type="radio"],
.ac-circle label::before {
	width: 30px;
	height: 30px;
	margin-top: -15px;
	left: 10px;
	position: absolute;
}

.ac-circle label::before {
	background-color: #fff;
	border: none;
}

.ac-circle svg {
	width: 70px;
	height: 70px;
	margin-top: -35px;
	left: -10px;
}

.ac-circle svg path {
	stroke-width: 5px;
} 

/* Box Fill */
.ac-boxfill svg path {
	stroke-width: 8px;
} 

/* Swirl */
.ac-swirl svg path {
	stroke-width: 8px;
}

/* List */
.ac-list ol {
	list-style: decimal;
	list-style-position: inside;
}

.ac-list ol li {
	font-size: 2em;
	padding: 1em 1em 0 2em;
	text-indent: -40px;
}

.ac-list ol li label {
	font-size: 0.5em;
	text-indent: 0;
	padding-left: 30px;
}

.ac-list label::before {
	display: none;
}

.ac-list svg {
	width: 100%;
	height: 80px;
	left: 0;
	top: 1.2em;
	margin-top: 0px;
}

.ac-list svg path {
	stroke-width: 4px;
}

.row {
  margin-left: -15px;
  margin-right: -15px;
  margin-top:0;
}
.col-sm-4 {
  position: relative;
  min-height: 1px;
  padding-left: 15px;
  padding-right: 15px;
  padding-bottom: 30px;
}

@media (min-width: 768px) {
  .col-sm-4 {
    float: left;
  }

  .col-sm-4 {
    width: 33.33333333%;
  } 
 
 .filter-columns {
	background-color:#2cc3ce;
 }
 
 .filter-columns-alt {
	background-color:#78D9E0;
	min-height:256px;
 }

ul,li { 
	margin:0; 
	padding:0; 
	list-style:none;
}

.label {
 	color:#000;
 	font-size:16px;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>


<table>
  <thead>
    <tr id="ProductID" class="first">
        <th>NAME</th>
    </tr>
  </thead>
  <tbody> </tbody>
</table>

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