The idea is when the minus button is clicked until 0, I need to hide the minus button and then unhide the plus button to add the value again. What I have tried here I managed to make the minus and plus function. Anyone can help I'm still new in vuejs.
<template>
<div class="message"># {{ count }}<br>
<p># {{ count }}</p>
<button v-on:click.prevent="increment"> </button>
<button v-on:click.prevent="decrement">-</button>
</div>
</template>
<script>
export default {
data: ()=> {
return {
count: 5
}
},
methods: {
increment() {
this.count ;
},
decrement() {
if(this.count > 0) {
this.count-- ;
}
}
}
}
</script>
CodePudding user response：
You can use v-show directive based on count value:
new Vue({
el: '#app',
data: () => {
return {
count: 5
}
},
methods: {
increment() {
this.count ;
},
decrement() {
if (this.count > 0) {
this.count--;
}
}
}
})<script src="https://unpkg.com/[email protected]/dist/vue.js"></script>
<div id="app">
<div class="message">
<p># {{ count }}</p>
<button v-show="count >= 0" v-on:click.prevent="increment"> </button>
<button v-show="count > 0" v-on:click.prevent="decrement">-</button>
</div>
</div>CodePudding user response：
Try to use v-if
new Vue({
el: '#demo',
data: ()=> {
return {
count: 5
}
},
methods: {
increment () {
this.count ;
},
decrement () {
if(this.count > 0){
this.count-- ;
}
}
}
})
Vue.config.productionTip = false
Vue.config.devtools = false<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.17/vue.js"></script>
<div id="demo">
<div class="message"># {{ count }}<br>
<p># {{ count }}</p>
<button v-on:click.prevent="increment" > </button>
<button v-on:click.prevent="decrement" v-if="count">-</button>
</div>
</div>CodePudding user response：
You can do this to hide the - when the value is 0:
<button v-if="count > 0" v-on:click.prevent="decrement">-</button>