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Appearance

As of Kendo UI R1 2022, the Button widget uses brand new rendering.

In this article, you will find information about the new rendering of the Kendo UI Button.

For additional information regarding the decision behind these changes, visit the Styling Overview article.

For a live example, visit the Appearance Demo of the Button.

Options

The Kendo UI Button supports the following styling options:

  • size—configures the overall size of the component.
  • themeColor—configures what color will be applied to the component.
  • fillMode—configures how the color is applied to the component.
  • rounded—configures the border radius of the component.

Size

The size option controls how big or small the rendered button looks. The structure of the class is k-button-{size}.

The following values are available for the size option:

  • sm—small size
  • md—medium size
  • lg—large size
  • none—unset

The default size value is medium and it is applied to the button element through the k-button-md class.

<button class="k-button k-button-md" >
</button>

FillMode

The fillMode option controls the way the color is applied to the rendered button. The structure of the class is k-button-{fillMode}.

The following values are available for the fillMode option:

  • solid
  • outline
  • flat
  • link
  • none

The default fillMode value is solid and it is applied to the button element through the k-button-solid class.

<button class="k-button k-button-solid" >
</button>

ThemeColor

The themeColor option controls the color that will be applied to the rendered Button. As applying themeColor is closely related to the fillMode, the structure of the class name for the themeColor is composite - k-button-{fillMode}-{themeColor}.

The following values are available for the themeColor option:

  • base
  • primary
  • secondary
  • tertiary
  • info
  • success
  • warning
  • error
  • dark
  • light
  • inverse
  • none

The default themeColor value is base. A button with default fillMode and themeColor will have k-button-solid-base class applied.

<!-- Button with default fillMode and themeColor -->
<button class="k-button k-button-solid k-button-solid-base" >
</button>

<!-- Button with default fillMode and 'primary' themeColor -->
<button class="k-button k-button-solid k-button-solid-primary" >
</button>

<!-- Button with `flat` fillMode and `primary` themeColor -->
<button class="k-button k-button-flat k-button-flat-primary" >
</button>

Rounded

The rounded option controls how much border radius is applied to the rendered button. The structure of the class is k-rounded-{size}.

The following values are available for the rounded option:

  • sm—small size
  • md—medium size
  • lg—large size
  • circle
  • pill
  • none—unset

The default rounded value is medium and it is applied to the button element through the k-rounded-md class.

<button class="k-button k-rounded-md" >
</button>

Old vs New Rendering

The old rendering of the component consisted of a button element with a single class named k-button. The k-button held all the styling information related to the Button component.

 <!-- OLD -->
<button class='k-button'></button>

Currently, styles are split in multiple class names. Each class is scoped to a single button appearance property:

<!-- NEW -->
<button class="k-button k-button-solid-base k-button-solid k-button-md k-rounded-md" >
</button>

Primary Button

The k-primary class is substituted with the appropriate themeColor class. For example, when fillMode is solid, that class is k-button-solid-primary

 <!-- OLD -->
<button class="k-button k-primary">
        Primary Button
</button>

<button class="k-button k-button-md k-rounded-md k-button-solid k-button-solid-primary">
        Primary Button
</button>

Flat Button

The k-flat class is substituted with the appropriate fillMode and themeColor classes. For example, when themeColor is base those are: k-button-flat and k-button-flat-base.

 <!-- OLD -->
<button class="k-button k-primary">
        Flat Button
</button>

<button class="k-button k-button-md k-rounded-md k-button-flat k-button-flat-base">
        Flat Button
</button>

Button with Icon

With the old rendering, the k-button-icon class was used for the Buttons with icons. The k-button-icon class is now used on the icon element itself. In case the button contains only an icon and no text, the k-icon-button is used for the button element. The k-button-icontext class is removed.

 <!-- OLD -->
<button class="k-button k-button-icontext">
        <span class=" k-icon k-i-folder"></span>
        Button
</button>

<button class="k-button k-button-icon">
        <span class="k-icon k-i-folder"></span>
</button>
<!-- NEW -->
<button class="k-button k-button-solid k-button-md k-rounded-md k-button-solid-base">
    <span class="k-button-icon k-icon k-i-folder"></span>
    <span class="k-button-text">Button</span>
</button>

<button class="k-button k-button-solid k-button-md k-rounded-md k-button-solid-base k-icon-button">
    <span class="k-button-icon k-icon k-i-folder"></span>
</button>

The following example showcases how to customize the styles of the Button with configured icon in both the new, and the old rendering:

      <!-- Open the example in Dojo and select version prior to 2022 R1 to see the difference in the appearance -->      
      <button id="iconTextButton">Filter</button>
      <button id="kendoIconTextButton">Clear Filter</button>
      <button id="iconButton"></button>
      <script>
        $(document).ready(function () {
          $("#iconTextButton").kendoButton({
            icon: "filter"
          });
          $("#kendoIconTextButton").kendoButton({
            icon: "filter-clear"
          });
          $("#iconButton").kendoButton({
            icon: "refresh"
          });
        });
      </script>
      <style>  
        .k-button .k-button-icon{ /* applies pink background to the icon elements with version 2022 R1 and later; */
          background-color: pink
        }

        .k-button.k-button-icon{ /* applies pink background to the entire icon button in version prior to 2022 R1;  */
          background-color: pink
        }
        .k-button.k-icon-button{ /* applies orange border to the entire icon button in 2022 R1 and later; */
          border: 3px solid orange;
        }        
      </style>

Visual Backwards Compatibility

To achieve the same look and feel as the old rendering, you must update the element references.

When you use a LESS theme, the new styling and rendering supports only the default options.

A reference to the button element can still be obtained through the k-button class.

$(".k-button") // Returns a reference to the button element in the old and the new rendering.
  • Change the style of the text in a Button The color of the text in a Button can be changed using the 'k-button' class with versions prior R1 2022, as well as versions after the rendering has been changed.
.k-button{
        color: green
}

See Also

In this article