Extract text from specific spans based on page URL, remove stop words, and do word frequency analysis.
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// ==UserScript==
// @name Text Frequency Analyzer with ASIN Page Support
// @namespace http://tampermonkey.net/
// @version 1.6
// @description Extract text from specific spans based on page URL, remove stop words, and do word frequency analysis.
// @author Your Name
// @match https://www.amazon.com/gp/bestsellers*
// @match https://www.amazon.com/*/dp/*
// @match https://www.amazon.com/dp/*
// @match https://www.amazon.com/s?k=*
// @match https://www.amazon.com/s?*
// @license MIT
// ==/UserScript==
(function () {
'use strict';
const stopWords = new Set([
'i', 'me', 'my', 'myself', 'we', 'our', 'ours', 'ourselves', 'you', 'your', 'yours', 'yourself', 'yourselves',
'he', 'him', 'his', 'himself', 'she', 'her', 'hers', 'herself', 'it', 'its', 'itself', 'they', 'them', 'their',
'theirs', 'themselves', 'what', 'which', 'who', 'whom', 'this', 'that', 'these', 'those', 'am', 'is', 'are', 'was',
'were', 'be', 'been', 'being', 'have', 'has', 'had', 'having', 'do', 'does', 'did', 'doing', 'a', 'an', 'the', 'and',
'but', 'if', 'or', 'because', 'as', 'until', 'while', 'of', 'at', 'by', 'for', 'with', 'about', 'against', 'between',
'into', 'through', 'during', 'before', 'after', 'above', 'below', 'to', 'from', 'up', 'down', 'in', 'out', 'on',
'off', 'over', 'under', 'again', 'further', 'then', 'once', 'here', 'there', 'when', 'where', 'why', 'how', 'all',
'any', 'both', 'each', 'few', 'more', 'most', 'other', 'some', 'such', 'no', 'nor', 'not', 'only', 'own', 'same',
'so', 'than', 'too', 'very', 's', 't', 'can', 'will', 'just', 'don', 'should', 'now'
]);
// Function to extract text from all matching spans based on URL
function extractText() {
let spans;
const url = window.location.href;
if (url.includes('/gp/bestsellers')) {
spans = document.querySelectorAll('._cDEzb_p13n-sc-css-line-clamp-3_g3dy1');
} else if (url.includes('/s?k=')) {
spans = document.querySelectorAll('.a-size-base-plus.a-color-base.a-text-normal, .a-size-medium.a-color-base.a-text-normal');
} else if (url.includes('/dp/')) { // ASIN product page
const titleElement = document.getElementById('productTitle');
const miniElements = document.querySelectorAll('.a-size-large product-title-word-break');
let textContent = titleElement ? titleElement.innerText : '';
miniElements.forEach(el => {
textContent += ' ' + el.innerText;
});
return textContent.trim();
} else {
alert('This script is not configured for this page.');
return '';
}
let textContent = '';
spans.forEach(span => {
textContent += span.innerText + ' ';
});
return textContent.trim();
}
// Function to clean text but keep meaningful symbols
function cleanText(text) {
// Retain certain symbols while removing others
return text.toLowerCase()
.replace(/[^a-z0-9\s\/"-]/g, '') // Retain letters, digits, spaces, /, ", -
.replace(/\s+/g, ' ') // Replace multiple spaces with a single space
.trim();
}
// Function to clean, remove stop words, and split text into words
function getWords(text) {
const words = cleanText(text).split(/\s+/).filter(Boolean);
return words.filter(word => !stopWords.has(word));
}
// Function to count word frequencies
function countFrequencies(words, n) {
const freqMap = new Map();
for (let i = 0; i <= words.length - n; i++) {
const phrase = words.slice(i, i + n).join(' ');
freqMap.set(phrase, (freqMap.get(phrase) || 0) + 1);
}
return Array.from(freqMap.entries()).sort((a, b) => b[1] - a[1]).slice(0, 10);
}
// Function to display the frequency analysis results
function displayResults(results) {
const resultDiv = document.createElement('div');
resultDiv.style.position = 'fixed';
resultDiv.style.top = '10px';
resultDiv.style.right = '10px';
resultDiv.style.backgroundColor = 'white';
resultDiv.style.border = '1px solid black';
resultDiv.style.padding = '10px';
resultDiv.style.zIndex = '10000';
resultDiv.style.maxHeight = '90vh';
resultDiv.style.overflowY = 'auto';
resultDiv.innerHTML = '<h2>Word Frequency Analysis</h2>';
results.forEach(([label, data]) => {
const title = document.createElement('h3');
title.textContent = label;
resultDiv.appendChild(title);
const list = document.createElement('ul');
data.forEach(([phrase, count]) => {
const listItem = document.createElement('li');
listItem.textContent = `${phrase}: ${count}`;
list.appendChild(listItem);
});
resultDiv.appendChild(list);
});
document.body.appendChild(resultDiv);
}
// Function to perform the word frequency analysis
function analyzeText() {
const text = extractText();
if (!text) {
alert('No text found in the specified spans.');
return;
}
const words = getWords(text);
const results = [
['Top 10 Single Words', countFrequencies(words, 1)],
['Top 10 Two-Word Phrases', countFrequencies(words, 2)],
['Top 10 Three-Word Phrases', countFrequencies(words, 3)],
['Top 10 Four-Word Phrases', countFrequencies(words, 4)]
];
displayResults(results);
}
// Add a button to the page to trigger the analysis
const analyzeButton = document.createElement('button');
analyzeButton.textContent = 'Analyze Text Frequency';
analyzeButton.style.position = 'fixed';
analyzeButton.style.bottom = '10px';
analyzeButton.style.right = '10px';
analyzeButton.style.zIndex = '10000';
analyzeButton.style.padding = '10px 20px';
analyzeButton.style.backgroundColor = '#007bff';
analyzeButton.style.color = 'white';
analyzeButton.style.border = 'none';
analyzeButton.style.borderRadius = '5px';
analyzeButton.style.cursor = 'pointer';
analyzeButton.addEventListener('click', analyzeText);
document.body.appendChild(analyzeButton);
})();