jb-select

pure js standalone select box web-component

• with search ability
• mobile freindly and responsive
• cusomizable style with css variable
• support typescript
• support both RTL & LTR direction pages
• custom validation
• support option dom customization
• can get array of js object as a option list and extract value and label from it to show it to user.

sample:https://codepen.io/javadbat/pen/abpjKVP

install

using npm:

    npm i jb-select

using cdn:

    <script src="https://unpkg.com/jb-input/dist/JBInput.umd.js"></script>

doc

use <jb-select></jb-select>

set option list

if ypu want to add option to jb-select set option list to DOM

const dropDownElement = ocument.querySelector('jb-select')
dropDownElement.optionList = [1,2,3]
//or you can provide object as a option
//if you provide array of object to optionList. rememmber to set callbacks as well so component would know how to extract label and value from it.
dropDownElement.optionList = [
    {
        id:1,
        productName:"book"
    },
    {
        id:2,
        productName:"pen"
    },
]

get value

its simple like any other form element use .value of dom

//get value
document.querySelector('jb-select').value;
// if you use a object in option list you can get selected option title beside value
document.querySelector('jb-select').selectedOptionTitle;

set value

to select value in your code you have 2 option: 1- set it via dom assign dropDownElement.value = yourValue 2- set through dom attribute <jb-select value="yourValueSting"></jb-select> remember set value as attribute if your option is a plain string but in direct assign like first option you can attach both string or object value assignation

placeholder

you can set placeholder when data is empty.
search-placeholderwork on mobile device when user focus on select and modal open this text will be placed in top search input box

<jb-select placeholder="please select" search-placeholder="type to search"></jb-select>

validation

since select has a limited value options, validation have different story here. the only validation i really neccessary here is required that indicate if user must select a value before he can move on so pass required attribute in dom then call triggerInputValidation function like all other jb web component family

change empty state shape

when the searched value in select is not found, there is an open dropdown with the not found message. you can customize this entire section by adding a div with the slot="empty-list"

like the example the below:

<jb-select>
    <div slot="empty-list-message">
        put your customize html here
    </div>
</jb-select>

Add Icon or Any Element into box

sometimes you want to add icon into the select box before value box. you can customize this entire section by adding a div or any other Tag with the slot="start-section"

like the example the below:

<jb-select>
    <div slot="start-section">
        <img class="your-custom-icon" src="./path/to/file.svg">
    </div>
</jb-select>

callbacks

you can add callbacks to manage the way component works for example if you have array of object as a option list and want to show custome title for option you can use:

    dropDownElement.callbacks.getOptionTitle = (option)=>{return`${option.province}-${option.state}-${option.city}`}
    dropDownElement.callbacks.getOptionValue = (option)=>{return`${option.value}`}
    //to customizing options
    dropDownElement.callbacks.getOptionDOM = (option,onOptionSelected,isSelected)=>{
        // option is the object or any other formatted data yoy=u privide to optionList array
         const optionElement = document.createElement('div');
         //defualt class of each option in jb-select. you can change or customize it if you wish
        optionElement.classList.add('select-option');
        // here in this example we want to show a color list with color sample next to it
        optionElement.innerHTML = '<span part="color-box" style="background-color:'+option.colorCode+';width:16px;height:16px"></span>'+'&nbsp;'+option.name;
        //onOptionSelected is a function you have to call when option selected it mostly bind on on option dom clicked'
        // if you want to set onClick on dom other than returned wrapper DOM for example on a color-box you must set value property on it: colorBoxDOM.value = option; colorBoxDOM.addEventListener('click', onOptionSelected);
        optionElement.addEventListener('click', onOptionSelected);
        //return HTMLElement in the end
        return optionElement;
    }
    //to customizing selected value
    dropDownElement.callbacks.getSelectedValueDOM = (option)=>{
        const optionElement = document.createElement('div');
        optionElement.classList.add('selected-value');
        optionElement.innerHTML = '<span part="color-box" style="background-color:'+option.value+';width:16px;height:16px"></span>'+'&nbsp;'+option.name;
        return optionElement;
    }

remember you must set this callback before set your optionList

events

    dropDownElement.addEventListener('change',(e)=>{/*your function*/});
    dropDownElement.addEventListener('keyup',(e)=>{/*your function*/});
    dropDownElement.addEventListener('input',(e)=>{/*your function*/});

set custome style

in some cases in your project you need to change defualt style of web-component for example you need zero margin or different border-radius and etc.
if you want to set a custom style to this web-component all you need is to set css variable in parent scope of web-component | css variable name | description | | ------------- | ------------- | | --jb-select-margin | web-component margin default is 0 0 | | --jb-select-width | change the select component width default is 100% | | --jb-select-border-radius | web-component border-radius defualt is 16px | | --jb-select-mobile-item-list-border-radius| web-component item list border-radius on mobile and tablet when list is open | | --jb-select-border-color | border color of select in normal mode | | --jb-select-border-color-selected | border color when user select a value from list | | --jb-select-bgcolor | background color of input | | --jb-select-overlay-bgcolor | background of select overlay when open in mobile and tablet screen | | --jb-select-list-max-height | max height of option list | | --jb-select-border-bottom-width | width of border bottom | | --jb-select-border-width | width of border | | --jb-select-label-color | color of label default is #1f1735 | | --jb-input-label-font-size | label font size default is 0.8em | | --jb-input-label-font-weight | color of label defualt is #1f1735 | | --jb-select-option-color | change option text color | | --jb-select-option-color-hover | change option text color on hover | | --jb-select-option-background-color | background of options default is transparent | | --jb-select-option-background-color-hover | background of options on mouse hover default is #1073db | | --jb-select-input-color | color of input value | | --jb-select-bgcolor-selected | set background color for selected status | | --jb-select-selected-value-color | selected value text color default is #1f1735 | | --jb-select-selected-value-font-size | font-size of selected value default is 1.1rem | | --jb-select-message-color | message text color default is #929292 | | --jb-select-message-font-size | font size of message default is 0.7em | | --jb-select-message-font-weight | font weight of message box default is normal | | --jb-select-placeholder-color | placeholder color default is initial | | --jb-select-placeholder-font-size | placeholder font-size default is 1.1rem | | --jb-select-height | jb-select box height | | --jb-select-mobile-search-input-height | when user open select on mobile there is a search box input this var will set its height | | --jb-select-mobile-item-list-margin | when user open select on mobile there is gap between search box & list that can be customized | | --jb-select-list-padding | padding of opened list box default is 16px 0 | | --jb-select-close-bg-color | close button bg-color default is #1f1735 | | --jb-select-close-x-color | close button x color default is #fff | | --jb-select-close-bg-opacity | close button bg opacity default is 0.4 | | --jb-select-mobile-input-bgcolor | background color search input when open in mobile | | --jb-select-mobile-search-border-width | when user open select on mobile, search box can have its own border width config | | --jb-select-mobile-search-border-color | when user open select on mobile, search box can have its own border color config | | --jb-select-mobile-search-border-bottom-width | when user open select on mobile, search box can have its own border bottom width config | | --jb-select-mobile-search-border-bottom-color | when user open select on mobile, search box can have its own border bottom color config | | --jb-select-mobile-search-border-radius | when user open select on mobile, search box can have its own border radius | | --jb-select-middle-div-height | separator line between input and list default is 0px and hidden but you can cahange it | | --jb-select-middle-div-color | change separator line color | | --jb-select-middle-div-margin | chnage seprator line margin | | --jb-select-middle-div-mobile-margin | chnage seprator line margin in mobile modal | | --jb-select-middle-div-radius | change seperator line border-radius | | --jb-select-list-scroll-color | list item scroll color default is #c3c3c3 | | --jb-select-list-scroll-border-radius | list item scroll border-radius default is 4px | | --jb-select-select-box-margin | margin of internal element called select box that wrapper display element of form in one box | | --jb-select-value-font-size | search input value font size default is 1.1rem | | --jb-select-list-border-width | border-width for list wrapper | | --jb-select-mobile-modal-border-radius | opend modal in mobile border radius. useful to chanage when you chnaged --jb-select-mobile-modal-height before | | --jb-select-mobile-modal-height | modal height when list open in mobile |