Range Slider - 图1

Range Slider

Range Slider Layout

Single Range

Single range slider layout is pretty simple:

1. <!-- Range Slider element -->
2. <div class="range-slider">
3. <!-- range input -->
4. <input type="range" min="0" max="100" step="1" value="10">
5. </div>

Dual Range

Dual range slider is more simpler as it doesn’t require input element because input:range doesn’t support dual range:

1. <!-- Range Slider element -->
2. <div class="range-slider"></div>

Range Slider Colors

Range Slider supports all default colors. So to change its color just add color-[color] class to range slider element.

1. <!-- red range -->
2. <div class="range-slider color-red">...</div>

4. <!-- orange range -->
5. <div class="range-slider color-orange">...</div>

Range Slider App Methods

Let’s look at related App methods to work with Range Slider:

app.range.create(parameters)- create Range Slider instance

  • parameters - object. Object with range slider parameters

Method returns created Range Slider’s instance

app.range.destroy(el)- destroy Range Slider instance

  • el - HTMLElement or string (with CSS Selector) or object. Range Slider element or Range Slider instance to destroy.

app.range.get(el)- get Range Slider instance by HTML element

  • el - HTMLElement or string (with CSS Selector). Range Slider element.

Method returns Range Slider’s instance

app.range.getValue(el)- get Range Slider value

  • el - HTMLElement or string (with CSS Selector). Range Slider element.

Method returns range slider value

app.range.setValue(el, value)- set new Range Slider value

  • el - HTMLElement or string (with CSS Selector). Range Slider element.
  • value - number (in case of single range) or array of values (in case of dual range)

Method returns Range Slider’s instance

Range Slider Parameters

Now let’s look at list of available parameters we need to create Range Slider:

Parameter Type Default Description
el HTMLElement string Range Slider element. HTMLElement or string with CSS selector of range slider element
inputEl HTMLElement string Range Slider input element or CSS selector of input element. If not specified, will try to look for input type=”range” inside of range slider element
dual boolean false Enable dual range slider
step number 1 Minimal step between values
label boolean false Enables additional label around range slider knob
formatLabel function(value) Method must return formatted range knob label text. As an argument it receives label value
min number Minimum value
max number Maximum value
value number array Initial value. Number in case of single range, and array of values in case of dual range
draggableBar boolean true When enabled it is also possible to interact with range slider (change value) on range bar click and swipe.
vertical boolean false Enables vertical range slider
verticalReversed boolean false Makes vertical range slider reversed (vertical must be also enabled)
scale boolean false Enables range slider scale
scaleSteps number 5 Number of scale steps
scaleSubSteps number 0 Number of scale sub steps (each step will be divided by this value)
formatScaleLabel function (value) Method must return formatted scale value. As an argument it receives currect scale step value. This method will be called as for each scale step.
limitKnobPosition boolean Limits knob position to the size of the range bar. By default enabled from iOS theme
on object Object with events handlers. For example: 1. var range = app.range.create({ 2. el: ‘.range-slider’, 3. on: { 4. change: function () { 5. console.log(‘Range Slider value changed’) 6. } 7. } 8. })

Range Slider Methods & Properties

So to create Range Slider we have to call:

1. var range = app.range.create({ /* parameters */ })

After that we have its initialized instance (like range variable in example above) with useful methods and properties:

Properties
range.app Link to global app instance
range.el Range Slider HTML element
range.$el Dom7 instance with range slider HTML element
range.inputEl Range Slider input HTML element
range.$inputEl Dom7 instance with range slider input HTML element
range.rangeWidth Range slider width (in px)
range.dual Boolean property indicating whether it is dual or not
range.min Range min value
range.max Range max value
range.value Range value
range.scale Boolean property indicating whether scale is enabled or not
range.scaleSteps Number of scale steps
range.scaleSubSteps Number of scale sub steps
range.$scaleEl Dom7 instance with generated scale HTML element
range.knobs Array where each element represents HTMLElement of created range knob (2 knobs in case of dual slider)
range.labels Array where each element represent HTMLElement of created range knob label (2 labels in case of dual slider)
range.params Range Slider parameters
Methods
range.getValue() Returns range slider value
range.setValue(value) Set new range slider value
range.updateScale() Re-calculate and re-render slider scale
range.destroy() Destroys range slider instance
range.on(event, handler) Add event handler
range.once(event, handler) Add event handler that will be removed after it was fired
range.off(event, handler) Remove event handler
range.off(event) Remove all handlers for specified event
range.emit(event, …args) Fire event on instance

Range Slider Events

Range Slider will fire the following DOM events on range element and events on app and range instance:

DOM Events

Event Target Description
range:change Range Slider Element<div class=”range-slider”> Event will be triggered when Range Slider value has been changed
range:changed Range Slider Element<div class=”range-slider”> Event will be triggered on slider knob release after value change
range:beforedestroy Range Slider Element<div class=”range-slider”> Event will be triggered right before Range Slider instance will be destroyed

App and Range Slider Instance Events

Range Slider instance emits events on both self instance and app instance. App instance events has same names prefixed with range.

Event Arguments Target Description
change (range, value) range Event will be triggered when range value has been changed. As an argument event handler receives range instance
rangeChange (range, value) app
changed (range, value) range Event will be triggered on slider knob release after value change. As an argument event handler receives range instance
rangeChanged (range, value) app
beforeDestroy (range) range Event will be triggered right before Range Slider instance will be destroyed. As an argument event handler receives range instance
rangeBeforeDestroy (range) app

Range Slider Auto Initialization

If you don’t need to use Range Slider API and your Range Slider is inside of the page and presented in DOM on moment of page initialization then it can be auto initialized with just adding additional range-slider-init class:

1. <!-- Add range-slider-init class -->
2. <div class="range-slider range-slider-init">
3. <input type="range" min="0" max="100" step="1" value="10">
4. </div>

In this case if you need to access created Range Slider instance you can use the app.range.get app method:

1. var range = app.range.get('.range-slider');

3. if (range.value > 50) {
4. // do something
5. }

When using auto init you may need to pass additional parameters. It can be done with two ways:

  • In you case you use single-range slider and you have input:range inside, then step, min, max, value parameters can be set from same input attributes:

1. <!-- min, max, step, value parameters will be set for same input attributes --> 2. <div class="range-slider range-slider-init"> 3. <input type="range" min="0" max="100" step="1" value="10"> 4. </div> - Otherwise, if you don’t have input:range inside or you use dual range input you can set all available parameters via data- attributes on range slider element.

1. <!-- parameters set via data- attributes --> 2. <div 3. class="range-slider range-slider-init" 4. data-min="0" 5. data-max="100" 6. data-step="10" 7. data-label="true" 8. data-value="50" 9. ></div>

In case you have dual range slider, then you need to pass to values using data-value-left and data-value-right attributes:

1. <!-- parameters set via data- attributes --> 2. <div 3. class="range-slider range-slider-init" 4. data-dual="true" 5. data-min="0" 6. data-max="100" 7. data-step="10" 8. data-label="true" 9. data-value-left="30" 10. data-value-right="60" 11. ></div>

CSS Variables

Below is the list of related CSS variables (CSS custom properties).

Note that commented variables are not specified by default and their values is what they fallback to in this case.

1. :root {
2. /*
3. --f7-range-bar-active-bg-color: var(--f7-theme-color);
4. --f7-range-scale-bg-color: var(--f7-range-bar-bg-color);
5. --f7-range-scale-substep-bg-color: var(--f7-range-bar-bg-color);
6. */
7. --f7-range-scale-step-height: 5px;
8. --f7-range-scale-text-color: #666;
9. --f7-range-scale-substep-width: 1px;
10. --f7-range-scale-substep-height: 4px;
11. }
12. .ios {
13. --f7-range-size: 28px;
14. --f7-range-bar-bg-color: #b7b8b7;
15. --f7-range-bar-size: 1px;
16. --f7-range-bar-border-radius: 2px;
17. --f7-range-knob-size: 28px;
18. --f7-range-knob-color: #fff;
19. --f7-range-knob-box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
20. --f7-range-label-size: 20px;
21. --f7-range-label-text-color: #000;
22. --f7-range-label-bg-color: #fff;
23. --f7-range-label-font-size: 12px;
24. --f7-range-label-font-weight: normal;
25. --f7-range-label-border-radius: 5px;
26. --f7-range-label-padding: 0px;
27. --f7-range-scale-step-width: 1px;
28. --f7-range-scale-font-size: 12px;
29. --f7-range-scale-font-weight: 400;
30. --f7-range-scale-label-offset: 4px;
31. }
32. .md {
33. --f7-range-size: 20px;
34. --f7-range-bar-bg-color: #b9b9b9;
35. --f7-range-bar-size: 2px;
36. --f7-range-bar-border-radius: 0px;
37. --f7-range-knob-size: 12px;
38. /*
39. --f7-range-knob-color: var(--f7-theme-color);
40. */
41. --f7-range-knob-box-shadow: none;
42. --f7-range-label-size: 26px;
43. --f7-range-label-font-weight: normal;
44. --f7-range-label-text-color: #fff;
45. /*
46. --f7-range-label-bg-color: var(--f7-theme-color);
47. */
48. --f7-range-label-font-size: 10px;
49. --f7-range-label-border-radius: 50%;
50. --f7-range-label-padding: 0px;
51. --f7-range-scale-step-width: 2px;
52. --f7-range-scale-font-size: 12px;
53. --f7-range-scale-font-weight: 400;
54. --f7-range-scale-label-offset: 4px;
55. }
56. .aurora {
57. --f7-range-size: 20px;
58. --f7-range-bar-bg-color: #c7c7c7;
59. --f7-range-bar-size: 2px;
60. --f7-range-bar-border-radius: 2px;
61. --f7-range-knob-size: 16px;
62. /*
63. --f7-range-knob-color: var(--f7-theme-color);
64. */
65. --f7-range-knob-box-shadow: none;
66. --f7-range-label-size: 20px;
67. --f7-range-label-text-color: #fff;
68. /*
69. --f7-range-label-bg-color: var(--f7-theme-color);
70. */
71. --f7-range-label-font-size: 10px;
72. --f7-range-label-font-weight: 600;
73. --f7-range-label-border-radius: 4px;
74. --f7-range-label-padding: 0px 4px;
75. --f7-range-scale-step-width: 2px;
76. --f7-range-scale-font-size: 11px;
77. --f7-range-scale-font-weight: 500;
78. --f7-range-scale-label-offset: 2px;
79. }

Examples

1. <div class="block-title">Volume</div>
2. <div class="list simple-list">
3. <ul>
4. <li>
5. <div class="item-cell width-auto flex-shrink-0">
6. <i class="icon f7-icons if-not-md">speaker_fill</i>
7. <i class="icon material-icons md-only">volume_mute</i>
8. </div>
9. <div class="item-cell flex-shrink-3">
10. <!-- range slider -->
11. <div class="range-slider range-slider-init">
12. <input type="range" min="0" max="100" step="1" value="10">
13. </div>
14. </div>
15. <div class="item-cell width-auto flex-shrink-0">
16. <i class="icon f7-icons if-not-md">speaker_3_fill</i>
17. <i class="icon material-icons md-only">volume_up</i>
18. </div>
19. </li>
20. </ul>
21. </div>

1. <div class="block-title">Brightness</div>
2. <div class="list simple-list">
3. <ul>
4. <li>
5. <div class="item-cell width-auto flex-shrink-0">
6. <i class="icon f7-icons if-not-md">sun_min</i>
7. <i class="icon material-icons md-only">brightness_low</i>
8. </div>
9. <div class="item-cell flex-shrink-3">
10. <!-- range slider, enable labels -->
11. <div class="range-slider range-slider-init color-orange" data-label="true">
12. <input type="range" min="0" max="100" step="1" value="50">
13. </div>
14. </div>
15. <div class="item-cell width-auto flex-shrink-0">
16. <i class="icon f7-icons if-not-md">sun_max</i>
17. <i class="icon material-icons md-only">brightness_high</i>
18. </div>
19. </li>
20. </ul>
21. </div>

1. <div class="block-title display-flex justify-content-space-between">Price Filter <span class="price-value">$200 - $400</span></div>
2. <div class="list simple-list">
3. <ul>
4. <li class="item-row">
5. <div class="item-cell width-auto flex-shrink-0">
6. <i class="icon f7-icons if-not-md">money_dollar_round</i>
7. <i class="icon material-icons md-only">attach_money</i>
8. </div>
9. <div class="item-cell item-cell-shrink-3">
10. <!-- Dual range slider with all the parameters passed via data- attributes -->
11. <div
12. id="price-filter"
13. class="range-slider range-slider-init color-green"
14. data-label="true"
15. data-dual="true"
16. data-min="0"
17. data-max="500"
18. data-step="1"
19. data-value-left="200"
20. data-value-right="400"
21. ></div>
22. </div>
23. <div class="item-cell width-auto flex-shrink-0">
24. <i class="icon f7-icons if-not-md">money_dollar_round_fill</i>
25. <i class="icon material-icons md-only">monetization_on</i>
26. </div>
27. </li>
28. </ul>
29. </div>

31. <div class="block-title">With Scale</div>
32. <div class="block block-strong">
33. <div class="range-slider range-slider-init"
34. data-min="0"
35. data-max="100"
36. data-label="true"
37. data-step="5"
38. data-value="25"
39. data-scale="true"
40. data-scale-steps="5"
41. data-scale-sub-steps="4"
42. ></div>
43. </div>
44. <div class="block-title">Vertical</div>
45. <div class="block block-strong display-flex justify-content-center">
46. <div class="range-slider range-slider-init margin-right"
47. data-vertical="true"
48. data-min="0"
49. data-max="100"
50. data-label="true"
51. data-step="1"
52. data-value="25"
53. style="height: 160px"
54. ></div>
55. <div class="range-slider range-slider-init margin-horizontal"
56. data-vertical="true"
57. data-min="0"
58. data-max="100"
59. data-label="true"
60. data-step="1"
61. data-value="50"
62. style="height: 160px"
63. ></div>
64. <div class="range-slider range-slider-init margin-horizontal"
65. data-vertical="true"
66. data-min="0"
67. data-max="100"
68. data-label="true"
69. data-step="1"
70. data-value="75"
71. style="height: 160px"
72. ></div>
73. <div class="range-slider range-slider-init margin-left"
74. data-dual="true"
75. data-vertical="true"
76. data-min="0"
77. data-max="100"
78. data-label="true"
79. data-step="1"
80. data-value-left="25"
81. data-value-right="75"
82. style="height: 160px"
83. ></div>
84. </div>
85. <div class="block-title">Vertical Reversed</div>
86. <div class="block block-strong display-flex justify-content-center">
87. <div class="range-slider range-slider-init color-red margin-right"
88. data-vertical="true"
89. data-vertical-reversed="true"
90. data-min="0"
91. data-max="100"
92. data-label="true"
93. data-step="1"
94. data-value="25"
95. style="height: 160px"
96. ></div>
97. <div class="range-slider range-slider-init color-red margin-horizontal"
98. data-vertical="true"
99. data-vertical-reversed="true"
100. data-min="0"
101. data-max="100"
102. data-label="true"
103. data-step="1"
104. data-value="50"
105. style="height: 160px"
106. ></div>
107. <div class="range-slider range-slider-init color-red margin-horizontal"
108. data-vertical="true"
109. data-vertical-reversed="true"
110. data-min="0"
111. data-max="100"
112. data-label="true"
113. data-step="1"
114. data-value="75"
115. style="height: 160px"
116. ></div>
117. <div class="range-slider range-slider-init color-red margin-left"
118. data-dual="true"
119. data-vertical="true"
120. data-vertical-reversed="true"
121. data-min="0"
122. data-max="100"
123. data-label="true"
124. data-step="1"
125. data-value-left="25"
126. data-value-right="75"
127. style="height: 160px"
128. ></div>
129. </div>

Handle price change:

1. $$('#price-filter').on('range:change', function (e) {
2. var range = app.range.get(e.target);
3. $$('.price-value').text('$'+(range.value[0])+' - $'+(range.value[1]));
4. });

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