Live Search Example

This example demonstrates how to create a responsive live search interface using WSX that updates results as users type.

Basic Live Search

HTML Setup

<!DOCTYPE html>
<html>
  <head>
    <title>WSX Live Search</title>
    <script src="/wsx.js"></script>
    <style>
      .search-container {
        max-width: 600px;
        margin: 0 auto;
        padding: 20px;
      }

      .search-input {
        width: 100%;
        padding: 12px;
        font-size: 16px;
        border: 2px solid #ddd;
        border-radius: 8px;
        margin-bottom: 20px;
      }

      .search-results {
        border: 1px solid #eee;
        border-radius: 8px;
        max-height: 400px;
        overflow-y: auto;
      }

      .search-item {
        padding: 12px;
        border-bottom: 1px solid #eee;
        cursor: pointer;
        transition: background-color 0.2s;
      }

      .search-item:hover {
        background-color: #f5f5f5;
      }

      .search-item:last-child {
        border-bottom: none;
      }

      .search-item h3 {
        margin: 0 0 5px 0;
        color: #333;
      }

      .search-item p {
        margin: 0;
        color: #666;
        font-size: 14px;
      }

      .loading {
        text-align: center;
        padding: 20px;
        color: #666;
      }

      .no-results {
        text-align: center;
        padding: 20px;
        color: #999;
      }
    </style>
  </head>
  <body>
    <div wx-config='{"url": "ws://localhost:3000/ws"}'>
      <div class="search-container">
        <h1>Live Search</h1>

        <input
          type="text"
          class="search-input"
          placeholder="Search for products, users, or content..."
          wx-send="search"
          wx-target="#search-results"
          wx-trigger="keyup delay:300ms"
          wx-include="value"
        />

        <div id="search-results" class="search-results">
          <div class="no-results">Start typing to search...</div>
        </div>
      </div>
    </div>
  </body>
</html>

Server Implementation

import { createExpressWSXServer } from "@wsx-sh/express";
import { html } from "@wsx-sh/core";
import express from "express";

const wsx = createExpressWSXServer();
const app = wsx.getApp();

// Mock data for demonstration
const mockData = [
  {
    id: 1,
    title: "MacBook Pro",
    description: "Apple laptop computer",
    category: "Electronics",
    price: 1299,
  },
  {
    id: 2,
    title: "iPhone 15",
    description: "Latest iPhone model",
    category: "Electronics",
    price: 999,
  },
  {
    id: 3,
    title: "Nike Air Max",
    description: "Running shoes",
    category: "Footwear",
    price: 120,
  },
  {
    id: 4,
    title: "Samsung Galaxy S24",
    description: "Android smartphone",
    category: "Electronics",
    price: 799,
  },
  {
    id: 5,
    title: "Adidas Ultraboost",
    description: "Premium running shoes",
    category: "Footwear",
    price: 180,
  },
  {
    id: 6,
    title: "iPad Pro",
    description: "Apple tablet",
    category: "Electronics",
    price: 799,
  },
  {
    id: 7,
    title: "Sony WH-1000XM4",
    description: "Noise-cancelling headphones",
    category: "Audio",
    price: 299,
  },
  {
    id: 8,
    title: "Dell XPS 13",
    description: "Windows laptop",
    category: "Electronics",
    price: 999,
  },
  {
    id: 9,
    title: "AirPods Pro",
    description: "Apple wireless earbuds",
    category: "Audio",
    price: 249,
  },
  {
    id: 10,
    title: "Levi's 501 Jeans",
    description: "Classic denim jeans",
    category: "Clothing",
    price: 69,
  },
];

// Live search handler
wsx.on("search", async (request, connection) => {
  const query = request.data.value?.toLowerCase() || "";

  // Simulate slight delay for realistic feel
  await new Promise((resolve) => setTimeout(resolve, 100));

  if (!query.trim()) {
    return {
      id: request.id,
      target: request.target,
      html: html`<div class="no-results">Start typing to search...</div>`,
    };
  }

  // Filter data based on search query
  const results = mockData.filter(
    (item) =>
      item.title.toLowerCase().includes(query) ||
      item.description.toLowerCase().includes(query) ||
      item.category.toLowerCase().includes(query)
  );

  if (results.length === 0) {
    return {
      id: request.id,
      target: request.target,
      html: `<div class="no-results">No results found for "${query}"</div>`,
    };
  }

  // Generate HTML for results
  const resultsHtml = results
    .map(
      (item) => `
    <div class="search-item" wx-send="select-item" data-item-id="${item.id}">
      <h3>${highlightQuery(item.title, query)}</h3>
      <p>${highlightQuery(item.description, query)}</p>
      <p><strong>$${item.price}</strong> • ${item.category}</p>
    </div>
  `
    )
    .join("");

  return {
    id: request.id,
    target: request.target,
    html: resultsHtml,
  };
});

// Helper function to highlight search terms
function highlightQuery(text, query) {
  if (!query) return text;

  const regex = new RegExp(`(${query})`, "gi");
  return text.replace(regex, "<mark>$1</mark>");
}

// Handle item selection
wsx.on("select-item", async (request, connection) => {
  const itemId = parseInt(request.data.itemId);
  const item = mockData.find((i) => i.id === itemId);

  if (item) {
    return {
      id: request.id,
      target: request.target,
      html: `
        <div class="search-item" style="background: #e8f5e8; border: 2px solid #4caf50;">
          <h3>${item.title}</h3>
          <p>${item.description}</p>
          <p><strong>$${item.price}</strong> • ${item.category}</p>
          <p style="color: #4caf50; font-weight: bold;">✓ Selected</p>
        </div>
      `,
    };
  }

  return {
    id: request.id,
    target: request.target,
    html: `<div class="no-results">Item not found</div>`,
  };
});

app.use(express.static("public"));
app.listen(3000, () => {
  console.log("Server running on http://localhost:3000");
});

Advanced Live Search with Database

Database Setup

// models/Product.js
import { DataTypes } from "sequelize";
import sequelize from "../config/database.js";

const Product = sequelize.define("Product", {
  title: {
    type: DataTypes.STRING,
    allowNull: false,
  },
  description: {
    type: DataTypes.TEXT,
    allowNull: true,
  },
  category: {
    type: DataTypes.STRING,
    allowNull: false,
  },
  price: {
    type: DataTypes.DECIMAL(10, 2),
    allowNull: false,
  },
  tags: {
    type: DataTypes.JSON,
    allowNull: true,
  },
  inStock: {
    type: DataTypes.BOOLEAN,
    defaultValue: true,
  },
});

export default Product;

Advanced Search Handler

import { Op } from "sequelize";
import Product from "./models/Product.js";

// Advanced search with filters
wsx.on("advanced-search", async (request, connection) => {
  const { query, category, minPrice, maxPrice, inStock } = request.data;

  // Build search conditions
  const whereConditions = {};

  if (query) {
    whereConditions[Op.or] = [
      { title: { [Op.iLike]: `%${query}%` } },
      { description: { [Op.iLike]: `%${query}%` } },
      { tags: { [Op.contains]: [query] } },
    ];
  }

  if (category) {
    whereConditions.category = category;
  }

  if (minPrice || maxPrice) {
    whereConditions.price = {};
    if (minPrice) whereConditions.price[Op.gte] = minPrice;
    if (maxPrice) whereConditions.price[Op.lte] = maxPrice;
  }

  if (inStock !== undefined) {
    whereConditions.inStock = inStock;
  }

  try {
    const products = await Product.findAll({
      where: whereConditions,
      limit: 20,
      order: [["title", "ASC"]],
    });

    if (products.length === 0) {
      return {
        id: request.id,
        target: request.target,
        html: `<div class="no-results">No products found matching your criteria</div>`,
      };
    }

    const resultsHtml = products
      .map(
        (product) => `
      <div class="search-item" wx-send="view-product" data-product-id="${
        product.id
      }">
        <h3>${highlightQuery(product.title, query)}</h3>
        <p>${highlightQuery(product.description, query)}</p>
        <div class="product-meta">
          <span class="price">$${product.price}</span>
          <span class="category">${product.category}</span>
          <span class="stock ${product.inStock ? "in-stock" : "out-of-stock"}">
            ${product.inStock ? "In Stock" : "Out of Stock"}
          </span>
        </div>
      </div>
    `
      )
      .join("");

    return {
      id: request.id,
      target: request.target,
      html: resultsHtml,
    };
  } catch (error) {
    console.error("Search error:", error);
    return {
      id: request.id,
      target: request.target,
      html: `<div class="error">Search failed. Please try again.</div>`,
    };
  }
});

Search with Autocomplete

Autocomplete HTML

<div class="autocomplete-container">
  <input
    type="text"
    class="search-input"
    placeholder="Search..."
    wx-send="autocomplete"
    wx-target="#autocomplete-results"
    wx-trigger="keyup delay:200ms"
    wx-include="value"
    autocomplete="off"
  />

  <div id="autocomplete-results" class="autocomplete-results"></div>
</div>

<style>
  .autocomplete-container {
    position: relative;
  }

  .autocomplete-results {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    border: 1px solid #ddd;
    border-top: none;
    border-radius: 0 0 8px 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    max-height: 300px;
    overflow-y: auto;
    z-index: 1000;
  }

  .autocomplete-item {
    padding: 10px;
    cursor: pointer;
    border-bottom: 1px solid #eee;
  }

  .autocomplete-item:hover {
    background-color: #f5f5f5;
  }

  .autocomplete-item:last-child {
    border-bottom: none;
  }

  .suggestion-text {
    font-weight: bold;
  }

  .suggestion-category {
    color: #666;
    font-size: 12px;
  }
</style>

Autocomplete Handler

wsx.on("autocomplete", async (request, connection) => {
  const query = request.data.value?.toLowerCase() || "";

  if (!query.trim() || query.length < 2) {
    return {
      id: request.id,
      target: request.target,
      html: "",
    };
  }

  try {
    // Get suggestions from multiple sources
    const [productSuggestions, categorySuggestions] = await Promise.all([
      getProductSuggestions(query),
      getCategorySuggestions(query),
    ]);

    const suggestions = [
      ...productSuggestions.map((p) => ({ type: "product", ...p })),
      ...categorySuggestions.map((c) => ({ type: "category", ...c })),
    ];

    if (suggestions.length === 0) {
      return {
        id: request.id,
        target: request.target,
        html: "",
      };
    }

    const suggestionsHtml = suggestions
      .slice(0, 10)
      .map(
        (suggestion) => `
      <div class="autocomplete-item" wx-send="select-suggestion" data-suggestion='${JSON.stringify(
        suggestion
      )}'>
        <div class="suggestion-text">${highlightQuery(
          suggestion.title,
          query
        )}</div>
        <div class="suggestion-category">${
          suggestion.type === "product" ? "Product" : "Category"
        }</div>
      </div>
    `
      )
      .join("");

    return {
      id: request.id,
      target: request.target,
      html: suggestionsHtml,
    };
  } catch (error) {
    console.error("Autocomplete error:", error);
    return {
      id: request.id,
      target: request.target,
      html: "",
    };
  }
});

async function getProductSuggestions(query) {
  return await Product.findAll({
    where: {
      [Op.or]: [
        { title: { [Op.iLike]: `%${query}%` } },
        { description: { [Op.iLike]: `%${query}%` } },
      ],
    },
    limit: 6,
    order: [["title", "ASC"]],
  });
}

async function getCategorySuggestions(query) {
  const categories = await Product.findAll({
    attributes: ["category"],
    where: {
      category: { [Op.iLike]: `%${query}%` },
    },
    group: ["category"],
    limit: 4,
  });

  return categories.map((cat) => ({
    title: cat.category,
    description: `Browse ${cat.category} products`,
  }));
}

Search with Filters

Filter Interface

<div class="search-filters">
  <div class="filter-group">
    <label>Category:</label>
    <select
      wx-send="filter-search"
      wx-target="#search-results"
      wx-trigger="change"
    >
      <option value="">All Categories</option>
      <option value="Electronics">Electronics</option>
      <option value="Clothing">Clothing</option>
      <option value="Books">Books</option>
      <option value="Home">Home</option>
    </select>
  </div>

  <div class="filter-group">
    <label>Price Range:</label>
    <input
      type="range"
      min="0"
      max="1000"
      step="50"
      wx-send="filter-search"
      wx-target="#search-results"
      wx-trigger="change input delay:500ms"
      wx-include="value"
    />
    <span id="price-display">$0 - $1000</span>
  </div>

  <div class="filter-group">
    <label>
      <input
        type="checkbox"
        wx-send="filter-search"
        wx-target="#search-results"
        wx-trigger="change"
      />
      In Stock Only
    </label>
  </div>
</div>

Filter Handler

wsx.on("filter-search", async (request, connection) => {
  const formData = request.data;

  // Extract filter values
  const category = formData.category || "";
  const maxPrice = formData.priceRange || 1000;
  const inStockOnly = formData.inStockOnly === "on";
  const searchQuery = connection.sessionData?.lastSearchQuery || "";

  // Build filter conditions
  const conditions = {};

  if (searchQuery) {
    conditions[Op.or] = [
      { title: { [Op.iLike]: `%${searchQuery}%` } },
      { description: { [Op.iLike]: `%${searchQuery}%` } },
    ];
  }

  if (category) {
    conditions.category = category;
  }

  if (maxPrice < 1000) {
    conditions.price = { [Op.lte]: maxPrice };
  }

  if (inStockOnly) {
    conditions.inStock = true;
  }

  try {
    const products = await Product.findAll({
      where: conditions,
      limit: 20,
      order: [["title", "ASC"]],
    });

    const resultsHtml = products
      .map(
        (product) => `
      <div class="search-item">
        <h3>${product.title}</h3>
        <p>${product.description}</p>
        <div class="product-meta">
          <span class="price">$${product.price}</span>
          <span class="category">${product.category}</span>
          <span class="stock ${product.inStock ? "in-stock" : "out-of-stock"}">
            ${product.inStock ? "In Stock" : "Out of Stock"}
          </span>
        </div>
      </div>
    `
      )
      .join("");

    return {
      id: request.id,
      target: request.target,
      html:
        resultsHtml ||
        `<div class="no-results">No products match your filters</div>`,
    };
  } catch (error) {
    console.error("Filter search error:", error);
    return {
      id: request.id,
      target: request.target,
      html: `<div class="error">Filter search failed</div>`,
    };
  }
});

Search Analytics

Analytics Tracking

// Track search analytics
const searchAnalytics = {
  searches: new Map(),
  popularQueries: new Map(),
  noResultsQueries: new Map(),
};

wsx.on("search", async (request, connection) => {
  const query = request.data.value?.toLowerCase() || "";
  const sessionId = connection.sessionData?.sessionId || connection.id;

  if (query.trim()) {
    // Track search
    recordSearch(sessionId, query);

    // Update popular queries
    const count = searchAnalytics.popularQueries.get(query) || 0;
    searchAnalytics.popularQueries.set(query, count + 1);
  }

  // ... existing search logic ...

  // Track no results
  if (results.length === 0 && query.trim()) {
    const count = searchAnalytics.noResultsQueries.get(query) || 0;
    searchAnalytics.noResultsQueries.set(query, count + 1);
  }

  // ... return response ...
});

function recordSearch(sessionId, query) {
  if (!searchAnalytics.searches.has(sessionId)) {
    searchAnalytics.searches.set(sessionId, []);
  }

  searchAnalytics.searches.get(sessionId).push({
    query,
    timestamp: new Date(),
    results: results.length,
  });
}

// Analytics endpoint
wsx.on("get-search-analytics", async (request, connection) => {
  const user = connection.sessionData?.user;

  if (!user?.isAdmin) {
    return {
      id: request.id,
      target: request.target,
      html: `<div class="error">Admin access required</div>`,
    };
  }

  const popularQueries = Array.from(searchAnalytics.popularQueries.entries())
    .sort(([, a], [, b]) => b - a)
    .slice(0, 10);

  const noResultsQueries = Array.from(
    searchAnalytics.noResultsQueries.entries()
  )
    .sort(([, a], [, b]) => b - a)
    .slice(0, 10);

  const analyticsHtml = `
    <div class="analytics-dashboard">
      <h3>Popular Search Queries</h3>
      <ul>
        ${popularQueries
          .map(
            ([query, count]) => `
          <li>${query} (${count} searches)</li>
        `
          )
          .join("")}
      </ul>
      
      <h3>Queries with No Results</h3>
      <ul>
        ${noResultsQueries
          .map(
            ([query, count]) => `
          <li>${query} (${count} times)</li>
        `
          )
          .join("")}
      </ul>
    </div>
  `;

  return {
    id: request.id,
    target: request.target,
    html: analyticsHtml,
  };
});

Performance Optimizations

Debouncing and Caching

// In-memory cache for search results
const searchCache = new Map();
const CACHE_TTL = 5 * 60 * 1000; // 5 minutes

wsx.on("search", async (request, connection) => {
  const query = request.data.value?.toLowerCase() || "";

  if (!query.trim()) {
    return {
      id: request.id,
      target: request.target,
      html: `<div class="no-results">Start typing to search...</div>`,
    };
  }

  // Check cache first
  const cacheKey = `search:${query}`;
  const cached = searchCache.get(cacheKey);

  if (cached && Date.now() - cached.timestamp < CACHE_TTL) {
    return {
      id: request.id,
      target: request.target,
      html: cached.html,
    };
  }

  // Perform search
  const results = await performSearch(query);
  const html = generateResultsHTML(results, query);

  // Cache results
  searchCache.set(cacheKey, {
    html,
    timestamp: Date.now(),
  });

  return {
    id: request.id,
    target: request.target,
    html,
  };
});

// Clear cache periodically
setInterval(() => {
  const now = Date.now();
  for (const [key, value] of searchCache) {
    if (now - value.timestamp > CACHE_TTL) {
      searchCache.delete(key);
    }
  }
}, 60000); // Clean every minute

This comprehensive live search example shows how to build a responsive, real-time search interface with WSX, including autocomplete, filtering, analytics, and performance optimizations.

Next Steps

Learn about Dashboard Examples for real-time data visualization
Explore Form Examples for interactive form handling
Understand Notification Examples for real-time alerts

Examples

​Live Search Example

​Basic Live Search

​HTML Setup

​Server Implementation

​Advanced Live Search with Database

​Database Setup

​Advanced Search Handler

​Search with Autocomplete

​Autocomplete HTML

​Autocomplete Handler

​Search with Filters

​Filter Interface

​Filter Handler

​Search Analytics

​Analytics Tracking

​Performance Optimizations

​Debouncing and Caching

​Next Steps