Using Vue Js to trigger an HTTP request when the user has finished typing

Question

Using Vue Js to trigger an HTTP request when the user has finished typing

Here is an example of an input box I am working with:

<b-row>
    <b-col md="3"
        v-for="(header, index) in columns"
        :key="index"
    >
        <b-form-group>
            <b-form-input
                placeholder="Search"
                type="text"
                class="d-inline-block"
                @input="advanceSearch($event, header.field)"
            />
        </b-form-group>                            
    </b-col>
</b-row>

Whenever the user types something, I save the input to a variable called searchString:

advanceSearch(e, field) { 
    this.searchString.push({
        [field] : e
    });
    // http.post().then().catch(); // my http call
},

I would like to make the HTTP request only when the user has finished typing. Currently, it seems to be making a request after every keystroke.

Is there a way to achieve this in VUE JS?

javascript vue.js

Answer 1

Answer №1

Seems like you're looking to trigger the function both when the user is idle typing and when they focus out.

An unfocused input triggers the event change, making it easy to work with. You can even implement debouncing, which could look something like this:

export default {
  advanceSearch(e, field) { /* ... */ },

  // create a custom debounced search
  debouncedSearch(...args) {
    clearTimeout(this.debounceTimeout); 
    this.debounceTimeout = setTimeout(
      e => this.advanceSearch.apply(this, args),
      500 // debounce time
    );
  },

  // ...
}

In your Vue code, the input section should resemble the following. Note how the component now includes a change listener and uses the debounce function in the input handler instead of direct execution.

<b-form-input
  placeholder="Search"
  type="text"
  class="d-inline-block"
  @input="debouncedSearch($event, header.field)"
  @change="advanceSearch($event, header.field)"
/>

This code essentially sends an HTTP request when the user either types and then clicks out of the input box ("blur"), or pauses typing for half a second (you can adjust this value as needed).

Answer 2

Seems like you're looking to trigger the function both when the user is idle typing and when they focus out.

An unfocused input triggers the event change, making it easy to work with. You can even implement debouncing, which could look something like this:

export default {
  advanceSearch(e, field) { /* ... */ },

  // create a custom debounced search
  debouncedSearch(...args) {
    clearTimeout(this.debounceTimeout); 
    this.debounceTimeout = setTimeout(
      e => this.advanceSearch.apply(this, args),
      500 // debounce time
    );
  },

  // ...
}

In your Vue code, the input section should resemble the following. Note how the component now includes a change listener and uses the debounce function in the input handler instead of direct execution.

<b-form-input
  placeholder="Search"
  type="text"
  class="d-inline-block"
  @input="debouncedSearch($event, header.field)"
  @change="advanceSearch($event, header.field)"
/>

This code essentially sends an HTTP request when the user either types and then clicks out of the input box ("blur"), or pauses typing for half a second (you can adjust this value as needed).

Answer 3

Answer №2

I was able to achieve this functionality with minimal code and ease of use:

<template>
   <input v-model="searchInput" type="text" placeholder="Search...">
</template

<script>
export default {
    data() {
        return {
            searchInput: null
        };
    },
    watch: { 
        searchInput: function() {
            clearTimeout(this.searchTimeout);
            this.searchTimeout = setTimeout(() => {
                this.searchFunction();
            }, 500);
        }
    },
    methods: {
        searchFunction() {
           /* perform the necessary search operation here */
           // use this.searchInput as the search term
        },
    }
}
</script>

Using v-model along with searchInput eliminates the need to pass search parameters across multiple events and methods.

You can adjust the delay (currently set at 500 milliseconds) for a better user experience, typically anywhere between 300 to 600 milliseconds works well.

Answer 4

I was able to achieve this functionality with minimal code and ease of use:

<template>
   <input v-model="searchInput" type="text" placeholder="Search...">
</template

<script>
export default {
    data() {
        return {
            searchInput: null
        };
    },
    watch: { 
        searchInput: function() {
            clearTimeout(this.searchTimeout);
            this.searchTimeout = setTimeout(() => {
                this.searchFunction();
            }, 500);
        }
    },
    methods: {
        searchFunction() {
           /* perform the necessary search operation here */
           // use this.searchInput as the search term
        },
    }
}
</script>

Using v-model along with searchInput eliminates the need to pass search parameters across multiple events and methods.

You can adjust the delay (currently set at 500 milliseconds) for a better user experience, typically anywhere between 300 to 600 milliseconds works well.

Using Vue Js to trigger an HTTP request when the user has finished typing

Answer №1

Answer №2

Similar questions

Increase the spacing between the column label and the x-axis label in a c3 chart

Inject fresh variable values into the serialization process

JavaScript Stopwatch Break

The alpha value returned by gl.readPixels in Three.js will consistently be 255

Experiencing occasional "Cannot GET /" error when using node.js on Bluemix

Save the outcome of the apollo query in a local state?

Zebra Calendar Alignment Problem

Struggling to get your HTML to Express app Ajax post request up and running?

Twilio Fax Reception: Blank Body Detected

Look for a file within a directory based on its name without knowing the file extension

Script to pop up cancel alert box

PHP's counterpart to the Javascript XMLHttpRequest

How can we manually initiate the creation of a bootstrap dropdown using VueJS?

Euler 13: Surprising outcome when attempting to combine several String variables

Best Practices for Converting TypeScript to JavaScript

Call order for importing and exporting in NodeJS

Step-by-step guide on displaying a fresh page within a JavaScript code

Experiencing the Pause: A Fresh Take on

Utilizing the power of Web SQL Database with a dynamic Javascript loop

What are the essential files required to begin with d3.js?