Dears, I have tried to apply function to reverse string in paragraph text in vue.js, I have created function to reverse words in methods called (reverseword) and added it
card using :rule="reverseword()",but it does not work. your support is highly appreciated Code:
<div class="post-box">
<span class="post-viwes">{{viwes}}</span>
<h3 class="post-title">{{title}}</h3>
<span class="post-date">{{date}}</span>
<p class="post-content">{{content}}</p>
<div class="row">
<div class = "col-sm-6 text-right">
<span class="post-author">{{author}} </span>
</div>
<div class = "col-sm-6 text-right" :rules="reverseword()">
<span class="post-category" >{{category.toUpperCase()}}</span>
</div>
</div>
)
</div>
</template>
<script>
export default {
props:["viwes","title","date","content","author","category"],
name:"posts",
methods: {
reverseWord: function () {
this.category = this.category.split('').reverse().join('')
}
}};
</script>```
Your reverseWord method attempts to mutate a prop (category).
You can't mutate a prop, because the mutation would be overwritten by the first update from the parent.
If/when you do want/need to change a prop value, you have do it in the parent component which will then pass the change down to the child component, through the props binding.
Updating the parent from child can be done by
If, in fact, you don't want to mutate category, you just need to be able to use its reverse inside the template, create a computed property:
computed: {
reversedCategory() {
return this.category.split('').reverse().join('');
}
}
Use it in template as you would use a normal property:
<div class = "col-sm-6 text-right" :rules="reversedCategory">
<span class="post-category" >{{category.toUpperCase()}}</span>
</div>
The computed is reactive. Meaning every time category changes, reverseCategory will update accordingly.