The data that has been retrieved is not currently displayed within the Vue table

I'm currently exploring js/vue and I'm attempting to retrieve data from an API. There's a field where the value is used to fetch data from the API based on that keyword. When I check the console log, I can see that the data is being received as an array. However, for some reason, the data isn't populating in the table.

An interesting observation is that if I make a small change in the code, like removing extra spaces and saving... while keeping the browser open with the fetched data, then the table suddenly populates.

Within the script, I have:

let data;

const fetchData = async (inputString: string) => {
 data = await getData(inputString);
 console.log('Data', data);
 return data;
}

And here are the input field + button:

<input v-model='inputString' placeholder='Enter keyword here' /> <button action @click='fetchData(inputString)"> Fetch data </button>

Answer №1

For the template to detect changes, it is important that your data variable is reactive.

import { ref } from 'vue';  
const data = ref<null|string>(null);

const updateData = async (inputValue: string) => {
 data.value = await fetchData(inputValue);
 console.log('Updated Data', data);
 return data.value;
}

Simply access and use the updated data within your template like this:

<div>{{data}}</div>

Learn more about reactivity in Vue.js by visiting: https://vuejs.org/guide/essentials/reactivity-fundamentals.html#reactive-variables-with-ref

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