Infinite scrolling is used to load a huge amount of data without degrading the Grid performance. This feature works like the lazy loading concept, which means the buffer data is loaded only when the scrollbar reaches the end of the scroller.
To enable Infinite scrolling, set enableInfiniteScrolling property as true.
- In this feature, Grid will not make a new data request when you visit the same page again.
<template>
<div id="app">
<ejs-grid :dataSource='data' height=300 :enableInfiniteScrolling='true' :pageSettings='options'>
<e-columns>
<e-column field='TaskID' headerText='Task ID' textAlign='Right' width=70></e-column>
<e-column field='Engineer' width=100></e-column>
<e-column field='Designation' width=100></e-column>
<e-column field='Estimation' textAlign='Right' width=100></e-column>
<e-column field='Status' width=100></e-column>
</e-columns>
</ejs-grid>
</div>
</template>
<script>
import Vue from "vue";
import { GridPlugin, InfiniteScroll } from "@syncfusion/ej2-vue-grids";
Vue.use(GridPlugin);
let names = ['TOM', 'Hawk', 'Jon', 'Chandler', 'Monica', 'Rachel', 'Phoebe', 'Gunther', 'Ross', 'Geller', 'Joey', 'Bing', 'Tribbiani', 'Janice', 'Bong', 'Perk', 'Green', 'Ken', 'Adams'];
let hours = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
let designation = ['Manager', 'Engineer 1', 'Engineer 2', 'Developer', 'Tester'];
let status = ['Completed', 'Open', 'In Progress', 'Review', 'Testing']
let data = (count) => {
let result = [];
for (let i = 0; i < count; i++) {
result.push({
TaskID: i + 1,
Engineer: names[Math.round(Math.random() * names.length)] || names[0],
Designation: designation[Math.round(Math.random() * designation.length)] || designation[0],
Estimation: hours[Math.round(Math.random() * hours.length)] || hours[0],
Status: status[Math.round(Math.random() * status.length)] || status[0]
});
}
return result;
};
export default {
data() {
return {
data: data(1000),
options: { pageSize: 50 }
};
},
provide: {
grid: [InfiniteScroll]
}
}
</script>
<style>
@import "../node_modules/@syncfusion/ej2-vue-grids/styles/material.css";
</style>You can define the initial loading pages count by using infiniteScrollSettings.initialBlocks property. By default, this feature loads three pages in initial rendering.
In the below demo, we have changed this property value to load five page records instead of three.
<template>
<div id="app">
<ejs-grid :dataSource='data' height=300 :enableInfiniteScrolling='true' :pageSettings='options' :infiniteScrollSettings='infiniteOptions'>
<e-columns>
<e-column field='TaskID' headerText='Task ID' textAlign='Right' width=70></e-column>
<e-column field='Engineer' width=100></e-column>
<e-column field='Designation' width=100></e-column>
<e-column field='Estimation' textAlign='Right' width=100></e-column>
<e-column field='Status' width=100></e-column>
</e-columns>
</ejs-grid>
</div>
</template>
<script>
import Vue from "vue";
import { GridPlugin, InfiniteScroll } from "@syncfusion/ej2-vue-grids";
Vue.use(GridPlugin);
let names = ['TOM', 'Hawk', 'Jon', 'Chandler', 'Monica', 'Rachel', 'Phoebe', 'Gunther', 'Ross', 'Geller', 'Joey', 'Bing', 'Tribbiani', 'Janice', 'Bong', 'Perk', 'Green', 'Ken', 'Adams'];
let hours = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
let designation = ['Manager', 'Engineer 1', 'Engineer 2', 'Developer', 'Tester'];
let status = ['Completed', 'Open', 'In Progress', 'Review', 'Testing']
let data = (count) => {
let result = [];
for (let i = 0; i < count; i++) {
result.push({
TaskID: i + 1,
Engineer: names[Math.round(Math.random() * names.length)] || names[0],
Designation: designation[Math.round(Math.random() * designation.length)] || designation[0],
Estimation: hours[Math.round(Math.random() * hours.length)] || hours[0],
Status: status[Math.round(Math.random() * status.length)] || status[0]
});
}
return result;
};
export default {
data() {
return {
data: data(1000),
options: { pageSize: 50 },
infiniteOptions: { initialBlocks: 5 }
};
},
provide: {
grid: [InfiniteScroll]
}
}
</script>
<style>
@import "../node_modules/@syncfusion/ej2-vue-grids/styles/material.css";
</style>Cache is used to store the loaded rows object in the Grid instance which can be reused for creating the row elements whenever you scroll to already visited page. Also, this mode maintains row elements based on the infiniteScrollSettings.maxBlocks count value, once this limit exceeds then it will remove row elements from DOM for new rows.
To enable the cache mode in Infinite scrolling, set infiniteScrollSettings.enableCache property as true.
<template>
<div id="app">
<ejs-grid :dataSource='data' height=300 :enableInfiniteScrolling='true' :pageSettings='options' :infiniteScrollSettings='infiniteOptions'>
<e-columns>
<e-column field='TaskID' headerText='Task ID' textAlign='Right' width=70></e-column>
<e-column field='Engineer' width=100></e-column>
<e-column field='Designation' width=100></e-column>
<e-column field='Estimation' textAlign='Right' width=100></e-column>
<e-column field='Status' width=100></e-column>
</e-columns>
</ejs-grid>
</div>
</template>
<script>
import Vue from "vue";
import { GridPlugin, InfiniteScroll } from "@syncfusion/ej2-vue-grids";
Vue.use(GridPlugin);
let names = ['TOM', 'Hawk', 'Jon', 'Chandler', 'Monica', 'Rachel', 'Phoebe', 'Gunther', 'Ross', 'Geller', 'Joey', 'Bing', 'Tribbiani', 'Janice', 'Bong', 'Perk', 'Green', 'Ken', 'Adams'];
let hours = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
let designation = ['Manager', 'Engineer 1', 'Engineer 2', 'Developer', 'Tester'];
let status = ['Completed', 'Open', 'In Progress', 'Review', 'Testing']
let data = (count) => {
let result = [];
for (let i = 0; i < count; i++) {
result.push({
TaskID: i + 1,
Engineer: names[Math.round(Math.random() * names.length)] || names[0],
Designation: designation[Math.round(Math.random() * designation.length)] || designation[0],
Estimation: hours[Math.round(Math.random() * hours.length)] || hours[0],
Status: status[Math.round(Math.random() * status.length)] || status[0]
});
}
return result;
};
export default {
data() {
return {
data: data(1000),
options: { pageSize: 50 },
infiniteOptions: { enableCache: true }
};
},
provide: {
grid: [InfiniteScroll]
}
}
</script>
<style>
@import "../node_modules/@syncfusion/ej2-vue-grids/styles/material.css";
</style>Group with Page topic.selectRows and selectRow method is not supported in infinite scrolling.