代碼：
<div id="box">
<button @click="counter">計算</button>
<p>按鈕被單擊{{count}}次</p>
</div>
<script type="text/javascript">
var vm = new Vue({
el: '#box',
data: {
count: 0
},
methods: {
counter: function () {
count++;
}
}
})
</script>報錯信息：
![Vue.js報錯問題解決：[Vue warn]: Error in v-on handler: “ReferenceError: XXX is not defined“.,vue.js,javascript,前端,經(jīng)驗分享](https://imgs.yssmx.com/Uploads/2023/07/540174-1.jpeg)
原因：count 忘加 this 了。。。文章來源：http://www.zghlxwxcb.cn/news/detail-540174.html
<div id="box">
<button @click="counter">計算</button>
<p>按鈕被單擊{{count}}次</p>
</div>
<script type="text/javascript">
var vm = new Vue({
el: '#box',
data: {
count: 0
},
methods: {
counter: function () {
this.count++;
}
}
})
</script>1、2文章來源地址http://www.zghlxwxcb.cn/news/detail-540174.html
到了這里，關(guān)于Vue.js報錯問題解決：[Vue warn]: Error in v-on handler: “ReferenceError: XXX is not defined“.的文章就介紹完了。如果您還想了解更多內(nèi)容，請在右上角搜索TOY模板網(wǎng)以前的文章或繼續(xù)瀏覽下面的相關(guān)文章，希望大家以后多多支持TOY模板網(wǎng)！
![[Vue warn]: Error in render: “TypeError: Cannot read property ‘ xxx ‘ of undefined“報錯原因和解決](https://imgs.yssmx.com/Uploads/2024/02/679912-1.png)
![解決：[Vue warn]: Error in render: “TypeError: Cannot read properties of undefined (reading ‘matched‘)“](https://imgs.yssmx.com/Uploads/2024/02/524841-1.png)
![關(guān)于JS中的一個[Vue warn]: Property “xxx“ was accessed during render but is not defined on instance 小問題](https://imgs.yssmx.com/Uploads/2024/02/522880-1.png)
