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Templates in JavaScript (ES5) Mention control

06 Jun 2023 / 3 minutes to read

The Mention has been provided with several options to customize each suggestion list item, display item, and data loading indication.

Item template

The content of each list item in the Mention can be customized using the itemTemplate property.

In the following sample, each list item is split into two columns to display relevant data using itemTemplate.

Source
Preview
index.js
index.html
styles.css
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//initiates the component
var mentionObject = new ej.dropdowns.Mention({
    //bind the data manager instance to dataSource property
    dataSource: new ej.data.DataManager({
        url: 'https://services.odata.org/V4/Northwind/Northwind.svc/',
        adaptor: new ej.data.ODataV4Adaptor(),
        crossDomain: true
    }),
    //bind the Query instance to query property
    query: new ej.data.Query().from('Employees').select(['FirstName', 'City','EmployeeID']).take(6),
    //map the appropriate columns to fields property
    fields: { value: 'FirstName' },
    //set width to popup list
    popupWidth: '200px',
    //sort the resulted items
    sortOrder: 'Ascending',
    //set the value to itemTemplate property
    itemTemplate: "<span><span class='name'>${FirstName}</span><span class ='city'>${City}</span></span>"
});

//render the component
mentionObject.appendTo('#mentionElement');
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<!DOCTYPE html><html lang="en"><head>
            
    <title>Essential JS 2 DropDownList</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Typescript UI Controls">
    <meta name="author" content="Syncfusion">
    <link href="styles.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-base/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-inputs/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-dropdowns/styles/material.css" rel="stylesheet">
    
    
<script src="https://cdn.syncfusion.com/ej2/21.2.3/dist/ej2.min.js" type="text/javascript"></script>
</head>

<body>
    
    <div id="container" style="width:200px;">
        <label style="font-size: 15px; font-weight: 600;">Comments</label>
        <!--element which is the Mention target to list the suggestions-->
        <div id="mentionElement" style="min-height: 100px; border: 1px solid #D7D7D7; border-radius: 4px; padding: 8px; font-size: 14px; width: 600px;"></div>
    </div>


<script>
var ele = document.getElementById('container');
if(ele) {
    ele.style.visibility = "visible";
 }   
        </script>
<script src="index.js" type="text/javascript"></script>
</body></html>
Copied to clipboard
#container {
    visibility: hidden;
}

#loader {
  color: #008cff;
  height: 40px;
  width: 30%;
  position: absolute;
  top: 45%;
  left: 45%;
}
.city{
    right: 15px;
    position: absolute;
}

.spinner_loader {
  border: 10px solid #f3f3f3;
  border-radius: 50%;
  border-top: 10px solid #3498db;
  width: 5px;
  height: 5px;
  position: absolute;
  top: 6px;
  left: 85px;
  -webkit-animation: spin 2s linear infinite; /* Safari */
  animation: spin 2s linear infinite;
}

/* Safari */
@-webkit-keyframes spin {
  0% { -webkit-transform: rotate(0deg); }
  100% { -webkit-transform: rotate(360deg); }
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

Display template

You can customize the mentioned value’s display appearance using the displayTemplate property.

In the following sample, the selected value is displayed as a combined text of both FirstName and City in the mention element, which is separated by a hyphen.

Source
Preview
index.js
index.html
Copied to clipboard
//initiates the component
var mentionObject = new ej.dropdowns.Mention({
    //bind the data manager instance to dataSource property
    dataSource: new ej.data.DataManager({
            url: 'https://services.odata.org/V4/Northwind/Northwind.svc/',
            adaptor: new ej.data.ODataV4Adaptor(),
            crossDomain: true
    }),
    //bind the Query instance to query property
    query: new ej.data.Query().from('Employees').select(['FirstName', 'City','EmployeeID']).take(6),
    //map the appropriate columns to fields property
    fields: { value: 'FirstName' },
    //sort the resulted items
    sortOrder: 'Ascending',
    //set width to popup list
    popupWidth: '200px',
    //set the value to itemTemplate property
    itemTemplate: "<span><span class='name'>${FirstName}</span><span class ='city'>${City}</span></span>",
    //set the value to displayTemplate property
    displayTemplate:"<span>${FirstName} - ${City}</span>"
});

//render the component
mentionObject.appendTo('#mentionElement');
Copied to clipboard
<!DOCTYPE html><html lang="en"><head>
            
    <title>Essential JS 2 DropDownList</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Typescript UI Controls">
    <meta name="author" content="Syncfusion">
    <link href="styles.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-base/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-inputs/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-dropdowns/styles/material.css" rel="stylesheet">
    
    
<script src="https://cdn.syncfusion.com/ej2/21.2.3/dist/ej2.min.js" type="text/javascript"></script>
</head>

<body>
    
    <div id="container" style="width:200px;">
        <label style="font-size: 15px; font-weight: 600;">Comments</label>
        <!--element which is the Mention target to list the suggestions-->
        <div id="mentionElement" style="min-height: 100px; border: 1px solid #D7D7D7; border-radius: 4px; padding: 8px; font-size: 14px; width: 600px;"></div>
    </div>


<script>
var ele = document.getElementById('container');
if(ele) {
    ele.style.visibility = "visible";
 }   
        </script>
<script src="index.js" type="text/javascript"></script>
</body></html>

No records template

You can show the custom design of the popup list content when no data and matches are found on the search with the help of noRecordsTemplate property.

Source
Preview
index.js
index.html
Copied to clipboard
//initiates the component
var mentionObject = new ej.dropdowns.Mention({
   //bind the data manager instance to dataSource property
   dataSource: [],
   //set the value to noRecords template
   noRecordsTemplate:"<span class='norecord'> NO DATA AVAILABLE</span>"
});

//render the component
mentionObject.appendTo('#mentionElement');
Copied to clipboard
<!DOCTYPE html><html lang="en"><head>
            
    <title>Essential JS 2 DropDownList</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Typescript UI Controls">
    <meta name="author" content="Syncfusion">
    <link href="styles.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-base/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-inputs/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-dropdowns/styles/material.css" rel="stylesheet">
    
    
<script src="https://cdn.syncfusion.com/ej2/21.2.3/dist/ej2.min.js" type="text/javascript"></script>
</head>

<body>
    
    <div id="container" style="width:200px;">
        <label style="font-size: 15px; font-weight: 600;">Comments</label>
        <!--element which is the Mention target to list the suggestions-->
        <div id="mentionElement" style="min-height: 100px; border: 1px solid #D7D7D7; border-radius: 4px; padding: 8px; font-size: 14px; width: 600px;"></div>
    </div>


<script>
var ele = document.getElementById('container');
if(ele) {
    ele.style.visibility = "visible";
 }   
        </script>
<script src="index.js" type="text/javascript"></script>
</body></html>

Spinner template

Display the customized waiting spinner, when data fetching takes time to load in the suggestion list by using the spinnerTemplate property.

Source
Preview
index.js
index.html
styles.css
Copied to clipboard
//initiates the component
var mentionObject = new ej.dropdowns.Mention({
    //bind the data manager instance to dataSource property
    dataSource: new ej.data.DataManager({
            url: 'https://services.odata.org/V4/Northwind/Northwind.svc/',
            adaptor: new ej.data.ODataV4Adaptor(),
            crossDomain: true
    }),
    //bind the Query instance to query property
    query: new ej.data.Query().from('Employees').select(['FirstName', 'City','EmployeeID']).take(26),
    //map the appropriate columns to fields property
    fields: { value: 'FirstName' },
    //set width to popup list
    popupWidth: '200px',
    //sort the resulted items
    sortOrder: 'Ascending',
    spinnerTemplate: '<div class="spinner_loader"></div>'
});

//render the component
mentionObject.appendTo('#mentionElement');
Copied to clipboard
<!DOCTYPE html><html lang="en"><head>
            
    <title>Essential JS 2 DropDownList</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Typescript UI Controls">
    <meta name="author" content="Syncfusion">
    <link href="styles.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-base/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-inputs/styles/material.css" rel="stylesheet">
    <link href="//cdn.syncfusion.com/ej2/21.2.3/ej2-dropdowns/styles/material.css" rel="stylesheet">
    
    
<script src="https://cdn.syncfusion.com/ej2/21.2.3/dist/ej2.min.js" type="text/javascript"></script>
</head>

<body>
    
    <div id="container" style="width:200px;">
        <label style="font-size: 15px; font-weight: 600;">Comments</label>
        <!--element which is the Mention target to list the suggestions-->
        <div id="mentionElement" style="min-height: 100px; border: 1px solid #D7D7D7; border-radius: 4px; padding: 8px; font-size: 14px; width: 600px;"></div>
    </div>


<script>
var ele = document.getElementById('container');
if(ele) {
    ele.style.visibility = "visible";
 }   
        </script>
<script src="index.js" type="text/javascript"></script>
</body></html>
Copied to clipboard
#container {
    visibility: hidden;
}

#loader {
  color: #008cff;
  height: 40px;
  width: 30%;
  position: absolute;
  top: 45%;
  left: 45%;
}
.city{
    right: 15px;
    position: absolute;
}

.spinner_loader {
  border: 10px solid #f3f3f3;
  border-radius: 50%;
  border-top: 10px solid #3498db;
  width: 5px;
  height: 5px;
  position: absolute;
  top: 6px;
  left: 85px;
  -webkit-animation: spin 2s linear infinite; /* Safari */
  animation: spin 2s linear infinite;
}

/* Safari */
@-webkit-keyframes spin {
  0% { -webkit-transform: rotate(0deg); }
  100% { -webkit-transform: rotate(360deg); }
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

See also

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