react-scroll-to-fetch
v1.0.9
Published
An infinite scroller for react
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react-scroll-to-fetch
Fetch Data from server as you scroll down with a simple lightweight React Component. Saves you all the troubles from designing a pagination system. This lightweight library works both with
window
scroll event and scrollable div elements.
Demo
Install
npm install --save react-scroll-to-fetch
Usage
For Window Scroll
import React, { Component } from 'react'
import ScrollToFetch from 'react-scroll-to-fetch'
class Example extends Component {
render () {
return (
<ScrollToFetch
fetch={this._fetch}
finished={this.state.finished}
initialLoad={true}
loader={<div style={{textAlign:'center'}}>Loading...</div>}
successMessage={<div style={{textAlign:'center'}}>No more data to load</div>}
>{//You dynamic Component that is updated by the fetch function}
</ScrollToFetch>
)
}
}
The
_fetch
function recieves one parameter , i.e.page
and should return aPromise
.Or if you declare the_fetch
function asasync
it will work.
An example of the _fetch
function
_fetch=(page)=>{
return new Promise((resolve,reject)=>{
axios.get("https://domain.tdl/api/getlist?page="+page)
.then(resp=>{
if(resp.data.success){
//handle data
resolve(resp.data);
}else{
//handle error
reject(resp.data.msg);
}
})
.cathc(err=>{
//handle error
reject(err.message);
}
});
}
An example of the _fetch
function using async/await
_fetch=async (page)=>{
try{
const resp=await axios.get("https://domain.tdl/api/getlist?page="+page);
if(resp.data.status){
//handle data
}else{
//handle error
}
}catch(e){
//handle error
}
}
Here is a list of all props :
| Name | Required | Type | Default | Description|
|:---- |:---- |:---- |:---- |:----|
|fetch |true
| func
| |A callback to retrive data from the server. |
| initialLoad| true
|bool
| | A flag to tell ScrollTofetch if it should fetch the first page without scrolling|
|finished |true
| bool
| false | No more data will be fetched from the server when set to true
.|
|loader|false
| element
| <div> Loading... </div>
| A message to show on the bottom of the list. You can replace it with you beautiful loading animation.
|successMessage|false
| element
| <div> No more data to load
| A message to show when fetching is complete, i.e. finished
prop is set to true
.|
|scrollParent|false
| string
| | id
of the scrollable div
. If you want ScrollToFetch
to listen to window
scroll events rather than any parent div
then do not use this prop.|
| currentPage | false
| number
| | To manually controll the page no. Click here for more information.|
| className | false
| string
| | pass className as a prop |
| style | false
| object
| | pass style as a prop |
Manually Controll the Page Number :
Generally if the ScrollToFetch
Component gets unmounted, the page no will be reset to zero. Now if you use a global state for the fetched list then there will be problem. To overcome this you can controll the page number with currentPage
props. Here is an example.
loadData=async (page)=>{
this.props.setCurrentPage(page);
//fetch data
}
render(){
return (
<ScrollToFetch
fethc={this.loadData}
currentPage={this.props.current_page}
>
{//iterate through the loaded list}
</ScrollToFetch>
)
}
License
MIT © xynes