JavaScript/jQuery TextBox Options

See Also

• Configure a Widget: Angular | Vue | React | jQuery | AngularJS | Knockout | ASP.NET MVC 5 | ASP.NET Core

The value of this property will be passed to the accesskey attribute of the HTML element that underlies the UI component.

This property is used when the UI component is displayed on a platform whose guidelines include the active state change for UI components.

Built-in buttons should also be declared in this array. You can find an example in the following demo:

View Demo

This property accepts a value of one of the following types:

• Number
  The height in pixels.

• String
  A CSS-accepted measurement of height. For example, "55px", "80%", "inherit".

• Function
  A function returning either of the above. For example:

  JavaScript

  height: function() {
      return window.innerHeight / 1.5;
  }

See Also

• Knockout Only - Validate a View Model
• validationErrors

A mask can contain the following elements.

Each field of an object passed to this property corresponds to a single rule. A field name is a character used in a mask enclosed in quotes. A field accepts the following values.

const CustomMaskRules = {
    //a single character
    's': '$',

    // a regular expression
    'h': /[0-9A-F]/,

    // an array of characters
    'n': ['$', '%', '&', '@'],

    // a function
    'f': function(char) {
        const allowedChars = ['a', 'b', 'c', '$', '_', '.'];
        return allowedChars.includes(char);
     }
}

A function that specifies a custom rule accepts the following arguments:

• Entered character
• Index of the character within the full string
• Full string

The function should return true if the character is allowed, otherwise it should return false.

The following code snippet demonstrates the use of the function to set a dynamic mask. In this example, the mask enforces the correct input of time values:

$(function () {
    $("#textBox").dxTextBox({
        mask: "Hh:Mm",
        maskRules: {
            H: char => char >= 0 && char <= 2,
            h: (char, index, fullStr) => {
                if (fullStr[0] == '2')
                    return [0,1,2,3].includes(parseInt(char));
                else
                    return [0,1,2,3,4,5,6,7,8,9].includes(parseInt(char));
            },
            M: char => char >= 0 && char <= 5,
            m: char => char >= 0 && char <= 9
        }
    });
});

<dx-text-box
    mask="Hh:Mm"
    [maskRules]="rules">
</dx-text-box>

import { Component } from '@angular/core';

@Component({
    selector: 'app-root',
    templateUrl: './app.component.html',
    styleUrls: ['./app.component.css']
})
export class AppComponent {
    rules = {
        H: char => char >= 0 && char <= 2,
        h: (char, index, fullStr) => {
            if (fullStr[0] == '2')
                return [0,1,2,3].includes(parseInt(char));
            else
                return [0,1,2,3,4,5,6,7,8,9].includes(parseInt(char));
        },
        M: char => char >= 0 && char <= 5,
        m: char => char >= 0 && char <= 9
    }
}

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { AppComponent } from './app.component';

import { DxTextBoxModule } from 'devextreme-angular';

@NgModule({
    declarations: [
        AppComponent
    ],
    imports: [
        BrowserModule,
        DxTextBoxModule
    ],
    providers: [ ],
    bootstrap: [AppComponent]
})
export class AppModule { }

<template>
    <DxTextBox
        mask="Hh:Mm"
        :mask-rules="rules"
    />
</template>

<script>
import 'devextreme/dist/css/dx.common.css';
import 'devextreme/dist/css/dx.light.css';

import DxTextBox from 'devextreme-vue/text-box';

export default {
    components: {
        DxTextBox
    },
    data() {
        return {
            rules: {
                H: char => char >= 0 && char <= 2,
                h: (char, index, fullStr) => {
                    if (fullStr[0] == '2')
                        return [0,1,2,3].includes(parseInt(char));
                    else
                        return [0,1,2,3,4,5,6,7,8,9].includes(parseInt(char));
                },
                M: char => char >= 0 && char <= 5,
                m: char => char >= 0 && char <= 9
            }
        }
    }
}
</script>

import React from 'react';

import 'devextreme/dist/css/dx.common.css';
import 'devextreme/dist/css/dx.light.css';

import TextBox from 'devextreme-react/text-box';

const rules = {
    H: char => char >= 0 && char <= 2,
    h: (char, index, fullStr) => {
        if (fullStr[0] == '2')
            return [0,1,2,3].includes(parseInt(char));
        else
            return [0,1,2,3,4,5,6,7,8,9].includes(parseInt(char));
    },
    M: char => char >= 0 && char <= 5,
    m: char => char >= 0 && char <= 9
};

const App = () => (
    <TextBox
        mask="Hh:Mm"
        maskRules={rules}   
    />
);

export default App;

If the number of entered characters reaches the value assigned to this property, the UI component does not allow you to enter any more characters.

The value of this property affects the set of keyboard buttons shown on the mobile device when the UI component gets focus. In addition, the following mode values add visual features to the UI component:

• "search" - the text box contains the "X" button, which clears the text box contents
• "password" - the text box shows a password character instead of the actual characters typed

Use the TextBoxMode enum to specify this property when the UI component is used as an ASP.NET MVC 5 Control or a DevExtreme-Based ASP.NET Core Control. This enum accepts the following values: Text, Email, Search, Tel, Url, and Password.

View Demo

Specify this property if the UI component lies within an HTML form that will be submitted.

If you configure the UI component as an ASP.NET MVC 5 Control or a DevExtreme-Based ASP.NET Core Control, use this property to bind the UI component to a model property. If this model property contains Data Annotation validation attributes, you get the client-side validation enabled by default.

See Also

• Get a UI component Instance in Angular | AngularJS | Knockout | Vue | React

The following example shows how to subscribe to component property changes:

$(function() {
    $("#textBoxContainer").dxTextBox({
        // ...
        onOptionChanged: function(e) {
            if(e.name === "changedProperty") {
                // handle the property change here
            }
        }
    });
});

<dx-text-box ...
    (onOptionChanged)="handlePropertyChange($event)"> 
</dx-text-box>

import { Component } from '@angular/core'; 

@Component({ 
    selector: 'app-root', 
    templateUrl: './app.component.html', 
    styleUrls: ['./app.component.css'] 
}) 

export class AppComponent { 
    // ...
    handlePropertyChange(e) {
        if(e.name === "changedProperty") { 
            // handle the property change here
        }
    }
}

import { BrowserModule } from '@angular/platform-browser'; 
import { NgModule } from '@angular/core'; 
import { AppComponent } from './app.component'; 
import { DxTextBoxModule } from 'devextreme-angular'; 

@NgModule({ 
    declarations: [ 
        AppComponent 
    ], 
    imports: [ 
        BrowserModule, 
        DxTextBoxModule 
    ], 
    providers: [ ], 
    bootstrap: [AppComponent] 
}) 

export class AppModule { }  

<template> 
    <DxTextBox ...
        @option-changed="handlePropertyChange"
    />            
</template> 

<script> 
import 'devextreme/dist/css/dx.common.css'; 
import 'devextreme/dist/css/dx.light.css'; 
import DxTextBox from 'devextreme-vue/text-box'; 

export default { 
    components: { 
        DxTextBox
    }, 
    // ...
    methods: { 
        handlePropertyChange: function(e) {
            if(e.name === "changedProperty") {
                // handle the property change here
            }
        }
    } 
} 
</script> 

import React from 'react'; 
import 'devextreme/dist/css/dx.common.css'; 
import 'devextreme/dist/css/dx.light.css'; 

import TextBox from 'devextreme-react/text-box'; 

const handlePropertyChange = (e) => {
    if(e.name === "changedProperty") {
        // handle the property change here
    }
}

export default function App() { 
    return ( 
        <TextBox ...
            onOptionChanged={handlePropertyChange}
        />        
    ); 
} 

See Also

• valueChangeEvent

When this property is set to true, the following applies:

• The editor's value cannot be changed using the UI.
• Built-in action buttons are invisible.

• Custom action buttons are visible but disabled. If a button should not be disabled, set its disabled property to false:

  jQuery

  index.js

  $(function() {
      $("#textBoxContainer").dxTextBox({
          // ...
          buttons: [{
              name: "myCustomButton",
              location: "after",
              options: {
                  onClick: function(e) {
                      // ...
                  },
                  disabled: false
              }
          }]
      });
  });

  Angular

  app.component.html

  app.component.ts

  app.module.ts

  <dx-text-box ... >
      <dxi-button
          name="myCustomButton"
          location="after"
          [options]="myCustomButtonConfig">
      </dxi-button>
  </dx-text-box>

  import { Component } from '@angular/core';
  
  @Component({
      selector: 'app-root',
      templateUrl: './app.component.html',
      styleUrls: ['./app.component.css']
  })
  export class AppComponent {
      myCustomButtonConfig = {
          onClick: (e) => {
              // ...
          },
          disabled: false
      };
  }

  import { BrowserModule } from '@angular/platform-browser';
  import { NgModule } from '@angular/core';
  import { AppComponent } from './app.component';
  
  import { DxTextBoxModule } from 'devextreme-angular';
  
  @NgModule({
      declarations: [
          AppComponent
      ],
      imports: [
          BrowserModule,
          DxTextBoxModule
      ],
      providers: [ ],
      bootstrap: [AppComponent]
  })
  export class AppModule { }

  Vue

  App.vue

  <template>
      <DxTextBox ... >
          <DxTextBoxButton
              name="myCustomButton"
              location="after"
              :options="myCustomButtonConfig"
          />
      </DxTextBox>
  </template>
  
  <script>
  import 'devextreme/dist/css/dx.common.css';
  import 'devextreme/dist/css/dx.light.css';
  
  import DxTextBox, {
      DxButton as DxTextBoxButton
  } from 'devextreme-vue/text-box';
  
  export default {
      components: {
          DxTextBox,
          DxTextBoxButton
      },
      data() {
          return {
              myCustomButtonConfig: {
                  onClick: (e) => {
                      // ...
                  },
                  disabled: false
              }
          }
      }
  }
  </script>

  React

  App.js

  import React from 'react';
  
  import 'devextreme/dist/css/dx.common.css';
  import 'devextreme/dist/css/dx.light.css';
  
  import TextBox, {
      Button as TextBoxButton
  } from 'devextreme-react/text-box';
  
  class App extends React.Component {
      myCustomButtonConfig = {
          onClick: (e) => {
              // ...
          },
          disabled: false
      };
      render() {
          return (
              <TextBox>
                  <TextBoxButton
                      name="myCustomButton"
                      location="after"
                      options={this.myCustomButtonConfig}
                  />
              </TextBox>
          );
      }
  }
  export default App;

  You can also hide a custom action button when the UI component becomes read-only. Set the button's visible property to false in the onOptionChanged function. To get the button, use the getButton(name) method:

  jQuery

  index.js

  $(function() {
      $("#textBoxContainer").dxTextBox({
          // ...
          buttons: [{
              name: "myCustomButton",
              // ...
          }],
          onOptionChanged: function(e) {
              if(e.name == "readOnly") {
                  const myButton = e.component.getButton("myCustomButton");
                  myButton.option("visible", !e.value); // Hide the button when readOnly: true
              }
          }
      });
  });

  Angular

  app.component.html

  app.component.ts

  app.module.ts

  <dx-text-box ...
      (onOptionChanged)="changeButtonState">
      <dxi-button
          name="myCustomButton"
          ...
      ></dxi-button>
  </dx-text-box>

  import { Component } from '@angular/core';
  
  @Component({
      selector: 'app-root',
      templateUrl: './app.component.html',
      styleUrls: ['./app.component.css']
  })
  export class AppComponent {
      changeButtonState(e) {
          if(e.name == 'readOnly') {
              let myButton = e.component.getButton('myCustomButton');
              myButton.option('visible', !e.value); // Hide the button when readOnly: true
          }
      }
  }

  import { BrowserModule } from '@angular/platform-browser';
  import { NgModule } from '@angular/core';
  import { AppComponent } from './app.component';
  
  import { DxTextBoxModule } from 'devextreme-angular';
  
  @NgModule({
      declarations: [
          AppComponent
      ],
      imports: [
          BrowserModule,
          DxTextBoxModule
      ],
      providers: [ ],
      bootstrap: [AppComponent]
  })
  export class AppModule { }

  Vue

  App.vue

  <template>
      <DxTextBox ...
          @option-changed="changeButtonState">
          <DxTextBoxButton
              name="myCustomButton"
              ...
          />
      </DxTextBox>
  </template>
  
  <script>
  import 'devextreme/dist/css/dx.common.css';
  import 'devextreme/dist/css/dx.light.css';
  
  import DxTextBox, {
      DxButton as DxTextBoxButton
  } from 'devextreme-vue/text-box';
  
  export default {
      components: {
          DxTextBox,
          DxTextBoxButton
      },
      data() {
          return {
              // ...
          }
      },
      methods: {
          changeButtonState(e) {
              if(e.name == 'readOnly') {
                  let myButton = e.component.getButton('myCustomButton');
                  myButton.option('visible', !e.value); // Hide the button when readOnly: true
              }
          }
      }
  }
  </script>

  React

  App.js

  import React from 'react';
  
  import 'devextreme/dist/css/dx.common.css';
  import 'devextreme/dist/css/dx.light.css';
  
  import TextBox, {
      Button as TextBoxButton
  } from 'devextreme-react/text-box';
  
  class App extends React.Component {
      changeButtonState(e) {
          if(e.name == 'readOnly') {
              let myButton = e.component.getButton('myCustomButton');
              myButton.option('visible', !e.value); // Hide the button when readOnly: true
          }
      }
      render() {
          return (
              <TextBox ...
                  onOptionChanged={this.changeButtonState}>
                  <TextBoxButton
                      name="myCustomButton"
                      ...
                  />
              </TextBox>
          );
      }
  }
  export default App;

When this property is set to true, the UI component text flows from right to left, and the layout of elements is reversed. To switch the entire application/site to the right-to-left representation, assign true to the rtlEnabled field of the object passed to the DevExpress.config(config) method.

DevExpress.config({
    rtlEnabled: true
});

See Also

• Right-to-Left Support Demo: DataGrid | Navigation Widgets | Editors

The Clear button calls the reset method.

The following styles are available:

Use the EditorStylingMode enum to specify this property when the UI component is used as an ASP.NET MVC 5 Control or a DevExtreme-Based ASP.NET Core Control. This enum accepts the following values: Outlined, Underlined, and Filled.

You can also use the global editorStylingMode setting to specify how the text fields of all editors in your application are styled.

The value of this property will be passed to the tabindex attribute of the HTML element that underlies the UI component.

If false, the value contains raw user input; if true, the value contains mask characters as well. This property applies only if a mask is specified.

See Also

• isValid

The following property values are possible:

• auto
  The tooltip with the message is displayed when the editor is in focus.
• always
  The tooltip with the message is not hidden when the editor loses focus.

Use the ValidationMessageMode enum to specify this property when the UI component is used as an ASP.NET MVC 5 Control or a DevExtreme-Based ASP.NET Core Control. This enum accepts the following values: Auto and Always.

The following table illustrates the validation status indicators:

validationStatus	Indicator
"pending"
"valid"
"invalid"

View Demo

This property accepts a single event name or several names separated by spaces.

The recommended events are "keyup", "blur", "change", "input", and "focusout", but you can use other events as well.

See Also

• onValueChanged

This property accepts a value of one of the following types:

• Number
  The width in pixels.

• String
  A CSS-accepted measurement of width. For example, "55px", "80%", "auto", "inherit".

• Function
  A function returning either of the above. For example:

  JavaScript

  width: function() {
      return window.innerWidth / 1.5;
  }