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ViewsHow to implement infinite scroll in my vue js
I currently learning combining laravel with vue. This page should be fetching post data from server and showing in user timeline. I am successfully get all data and display it. But i want to implement a infinite scroll into it but i had no idea how to do it. i had been tried many different way also not working. Maybe is my knowledge about vue is still fresh. Any suggestion for me?
Here is my original code :jsfiddle
Here is code i try to implement infinite scroll with this example .
The scrolling symbol is showing but seem like the array did't not passing , the data still appear all in one time.
Once submitted /feed the server will return array which contain post information. But i don't know how to passing into the list array.
Returned Array
In vue
In route
3 answers
Answer question0
Installation:
npm install vue-infinite-scroll --save
Registration in your main.js:
// register globally
var infiniteScroll = require('vue-infinite-scroll');
Vue.use(infiniteScroll)
// or for a single instance
var infiniteScroll = require('vue-infinite-scroll');
new Vue({
directives: {infiniteScroll}
})
Your html:
<div v-infinite-scroll="loadMore" infinite-scroll-disabled="busy" infinite-scroll-distance="10">
...
</div>
You component:
var count = 0;
new Vue({
el: '#app',
data: {
data: [],
busy: false
},
methods: {
loadMore: function() {
this.busy = true;
setTimeout(() => {
for (var i = 0, j = 10; i < j; i++) {
this.data.push({ name: count++ });
}
this.busy = false;
}, 1000);
}
}
});
0
One solution would be to setup a locking mechanism to stop rapid requests to your backend. The lock would be enabled before a request is made, and then the lock would be disabled when the request has been completed and the DOM has been updated with the new content (which extends the size of your page).
For example:
new Vue({
// ... your Vue options.
ready: function () {
var vm = this;
var lock = true;
window.addEventListener('scroll', function () {
if (endOfPage() && lock) {
vm.$http.get('/myBackendUrl').then(function(response) {
vm.myItems.push(response.data);
lock = false;
});
};
});
}; });
Another thing to keep in mind is that the scroll event is triggered more than you really need it to (especially on mobile devices), and you can throttle this event for improved performance. This can efficiently be done with requestAnimationFrame:
;(function() {
var throttle = function(type, name, obj) {
obj = obj || window;
var running = false;
var func = function() {
if (running) { return; }
running = true;
requestAnimationFrame(function() {
obj.dispatchEvent(new CustomEvent(name));
running = false;
});
};
obj.addEventListener(type, func);
};
/* init - you can init any event */
throttle ("scroll", "optimizedScroll");
})();
// handle event
window.addEventListener("optimizedScroll", function() {
console.log("Resource conscious scroll callback!");
});
0
I also tried the Vue-infinite-scroll, but it's not working properly when aligning with Vue-router, at least in my code. So I came up with my own solution.
<template>
<div ref="loadmore" class="infinite-container">
<!-- the inifite container -->
</div>
</template>
<script>
export default {
data() {
return {
timer: null,
// check if is in infinite procees
busy: false
}
},
methods: {
infiniteScrollHandler() {
//check if container's bttom is overflow screen
let bottomOff =
this.$refs.loadmore.getBoundingClientRect().bottom - screen.height;
if (bottomOff < 10 && !this.busy) {
console.log("loading... " + new Date());
this.busy = true;
// do something
this.busy = false;
}
},
setIntervalTimer() {
//check every 500 milliseconds
this.timer = setInterval(() => {
this.infiniteScrollHandler();
}, 500);
}
},
mounted() {
// set up timer on mounted
this.setIntervalTimer();
},
beforeDestroy() {
// do not forget clear the interval timer
clearInterval(this.timer);
}
};
</script>