What problems does Vue solve, and which ones does jQuery address?

Vue.js addresses the tasks of building modern scalable user interfaces using a reactive data model, component-based approach, and declarative rendering. It simplifies application state management and event handling.

jQuery handles DOM manipulation, event processing, and AJAX requests, providing a cross-browser API. It focuses on direct interaction with page elements.

Comparison table:

Characteristic	Vue.js	jQuery
Main task	Building reactive UI, SPA	DOM manipulation, AJAX, events, animation
Approach	Component-based, declarative	Imperative, based on direct DOM access
Data management	Reactive, using V-model, Pinia/Vuex	Direct access to DOM elements
Performance	Virtual DOM	Direct work with real DOM
Scalability	High, suitable for complex applications	Less, harder to maintain large apps
Usage	Building frontend from scratch, SPA	Adding interactivity to existing pages

// Vue.js example: reactive data update in template
<template>
  <div>
    <h1>{{ message }}</h1>
    <button @click="changeMessage">Change</button>
  </div>
</template>

<script>
export default {
  data() {
    return {
      message: 'Hello, Vue!'
    };
  },
  methods: {
    changeMessage() {
      this.message = 'Message changed!';
    }
  }
};
</script>

// jQuery example: DOM manipulation and event handling
$(document).ready(function() {
  $('#myButton').click(function() {
    $('#myElement').text('Text changed with jQuery!');
  });
});