如何制作分页。我已经尝试了很多次,但我做不到。我必须在没有 Laravel 的情况下进行分页。问题是我不能做一个循环显示页数,每页应该有10个帖子,总共有98个帖子。我使属性被计算,因此您可以找出将有多少页。我做了一个有效的页面切换。但是由于某种原因,我将显示页数的循环对我不起作用,我不明白问题是什么?
我的 Vue js:从 'axios' 导入 axios;
export default {
name: 'app',
data () {
return{
counter: 1,
zero: 0,
posts: [],
createTitle: '',
createBody: '',
visiblePostID: '',
}
},
watch: {
counter: function(newValue, oldValue) {
this.getData()
}
},
created(){
this.getData()
},
computed: {
evenPosts: function(posts){
return Math.ceil(this.posts.length/10);
}
},
methods: {
getData() {
axios.get(`http://jsonplaceholder.typicode.com/posts?_start=${this.counter}+${this.zero}&_limit=10`).then(response => {
this.posts = response.data
})
},
// even: function(posts) {
// return Math.ceil(this.posts.length/10)
// },
deleteData(index, id) {
axios.delete('http://jsonplaceholder.typicode.com/posts/' + id)
.then(response => {
console.log('delete')
this.posts.splice(index, 1);
})
.catch(function(error) {
console.log(error)
})
},
addPost() {
axios.post('http://jsonplaceholder.typicode.com/posts/', {
title: this.createTitle,
body: this.createBody
}).then((response) => {
this.posts.unshift(response.data)
})
},
changePost(id, title, body) {
axios.put('http://jsonplaceholder.typicode.com/posts/' + id, {
title: title,
body: body
})
},
},
}
我的html:
<div id="app">
<div class="smallfon">
<div class="blocktwitter"><img src="src/assets/twitter.png" class="twitter"/></div>
<div class="addTextPost">Add a post</div>
<input type="text" v-model="createTitle" class="created"/>
<input type="text" v-model="createBody" class="created"/>
<div><button @click="addPost()" class="addPost">AddPost</button></div>
<div class="post1">
<div class="yourPosts">Your Posts</div>
<ul>
<li v-for="(post, index) of posts" class="post">
<p><span class="boldText">Title:</span> {{ post.title }}</p>
<p><span class="boldText">Content:</span> {{ post.body }}</p>
<button @click="deleteData(index, post.id)" class="buttonDelete">Delete</button>
<button @click="visiblePostID = post.id" class="buttonChange">Change</button>
<div v-if="visiblePostID === post.id" class="modalWindow">
<div><input v-model="post.title" class="changePost"><input v-model="post.body" class="changePost"></div>
<button type="button" @click="changePost(post.id, post.title, post.body)" class="apply">To apply</button>
</div>
</li>
</ul>
<button type="button" @click="counter -=1" class="prev">Предыдущая</button>
<!-- <div class="counter">{{ counter }}</div> --> <span v-for="n in evenPosts" :key="n.id">{{ n }} </span>
<button type="button" @click="counter +=1" class="next">Следущая</button>
<!-- <span v-for="n in evenPosts" :key="n.id">{{ n }} </span> -->
</div>
</div>
</div>
如果您对获取请求 ( axios.get(...&_limit=10)
)绑定限制,则无法返回分页计数,因为您的计算evenPost
属性将始终返回 1,即Math.ceil(10/10) == 1
要修复分页,请删除参数查询以获取数据:
getData() {
axios.get('https://jsonplaceholder.typicode.com/posts').then(response => {
this.posts = response.data
})
}
然后将默认counter
页面更改为0
并添加一个计算属性以基于它返回 10 个帖子:
data () {
return {
counter: 0,
//...
}
},
computed: {
paginatedPosts() {
const start = this.counter * 10;
const end = start + 10;
return this.posts.slice(start, end);
}
}
现在你可以迭代这个属性:
<ul>
<li v-for="(post, index) of paginatedPosts" class="post">
...
</li>
</ul>
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