text

Utilities for text and string manipulation.

Functions

Function	Description	Example
trim	Trim specific characters from string	dphelper.text.trim(s, c, b, e)
capitalize	Capitalize first letter of each word	dphelper.text.capitalize(txt)
lower	Convert string to lowercase	dphelper.text.lower(txt)
upper	Convert string to uppercase	dphelper.text.upper(txt)
nl2br	Convert newlines to <br> tags	dphelper.text.nl2br(str)
sanitize	Remove HTML tags from string	dphelper.text.sanitize(str)
camelCase.toSpace	Convert camelCase to space-separated	dphelper.text.camelCase.toSpace(str)
camelCase.toUnderscore	Convert camelCase to underscore	dphelper.text.camelCase.toUnderscore(str)
fitContainer	Auto-adjust font size to fit container	dphelper.text.fitContainer(selector)
keywords	Extract keywords from sentence	dphelper.text.keywords(sentence)
replaceText	Replace multiple patterns in text	dphelper.text.replaceText(text, replacements)

Description

Comprehensive text manipulation utilities:

• Case Conversion - lower, upper, capitalize

• HTML Conversion - nl2br, sanitize HTML tags

• camelCase - Convert to/from space or underscore

• Text Extraction - Extract keywords from text

• Pattern Replacement - Multi-replacement operations

Usage Examples

Capitalize

// Capitalize each word
const text = 'hello world from dpHelper';
const capitalized = dphelper.text.capitalize(text);
// Output: "Hello World From DpHelper"

// Use for titles
const title = 'the quick brown fox';
console.log(dphelper.text.capitalize(title));
// "The Quick Brown Fox"

Lower/Upper Case

// Convert to lowercase
const upper = 'HELLO WORLD';
console.log(dphelper.text.lower(upper));
// "hello world"

// Convert to uppercase
const lower = 'hello world';
console.log(dphelper.text.upper(lower));
// "HELLO WORLD"

// Normalize user input
const username = '  JohnDoe  ';
console.log(dphelper.text.lower(username.trim()));
// "johndoe"

Newlines to BR Tags

// Convert newlines to HTML <br>
const text = 'Line 1\nLine 2\nLine 3';
const html = dphelper.text.nl2br(text);
// Output: "Line 1<br>Line 2<br>Line 3"

// Display user textarea content
function displayTextareaContent(textareaValue) {
  return dphelper.text.nl2br(textareaValue);
}

// Preserve whitespace
const poem = 'Roses are red\nViolets are blue\nSugar is sweet\nAnd so are you';
document.getElementById('poem').innerHTML = dphelper.text.nl2br(poem);

Remove HTML Tags

// Strip HTML tags
const html = '<p>Hello <b>World</b></p>';
const plain = dphelper.text.sanitize(html);
// Output: "Hello World"

// Get plain text from rich editor
function getPlainText(htmlContent) {
  return dphelper.text.sanitize(htmlContent);
}

// Extract text from HTML
const article = '<article><h1>Title</h1><p>Content here</p></article>';
console.log(dphelper.text.sanitize(article));
// "TitleContent here"

camelCase Conversions

// camelCase to space-separated
const camel = 'userNameFirst';
const spaced = dphelper.text.camelCase.toSpace(camel);
// Output: "User Name First"

// camelCase to underscore
const underscored = dphelper.text.camelCase.toUnderscore(camel);
// Output: "user_name_first"

// Use for readable labels
function createLabel(key) {
  return dphelper.text.camelCase.toSpace(key);
}

console.log(createLabel('firstName'));  // "First Name"
console.log(createLabel('lastName'));   // "Last Name"
console.log(createLabel('emailAddress')); // "Email Address"

// Database to UI
const dbColumn = 'createdAtDate';
console.log(dphelper.text.camelCase.toSpace(dbColumn));
// "Created At Date"

Extract Keywords

// Extract keywords from text (words > 3 chars, title case)
const sentence = 'The JavaScript Programming Language is Amazing';
const keywords = dphelper.text.keywords(sentence);
// Output: ["javascript", "programming", "language", "amazing"]

// Analyze text content
function analyzeContent(text) {
  return {
    keywords: dphelper.text.keywords(text),
    wordCount: text.split(/\s+/).length
  };
}

// Tag generation
const article = 'React is a JavaScript library for building user interfaces';
const tags = dphelper.text.keywords(article);
// ["react", "javascript", "library", "building", "user", "interfaces"]

Replace Multiple Patterns

// Replace multiple patterns at once
const text = 'Copyright (c) 2024 by Company (r)';
const result = dphelper.text.replaceText(text, {
  '(c)': '©',
  '(r)': '®',
  '(tm)': '™'
});
// Output: "Copyright © 2024 by Company ®"

// Symbol replacement
const legal = 'Copyright (c) 2024 (r) All Rights Reserved (tm)';
console.log(dphelper.text.replaceText(legal, {
  '(c)': '©',
  '(r)': '®',
  '(tm)': '™'
}));
// "Copyright © 2024 ® All Rights Reserved ™"

// Emoticon replacement
const message = 'Hello :) Have a great day !';
const emoticons = dphelper.text.replaceText(message, {
  ':)': '😊',
  '(:': '😊',
  ':(': '😢',
  '):': '😢',
  '!': '❗'
});
// "Hello 😊 Have a great day ❗"

Auto-fit Text to Container

// Automatically adjust font size to fit container width
// HTML: <div id="title">Long Title Text Here</div>

dphelper.text.fitContainer('#title');

// The font-size will auto-adjust based on container width
// Responds to window resize events

Complete Form Processor

class TextProcessor {
  static formatTitle(text) {
    return dphelper.text.capitalize(dphelper.text.lower(text.trim()));
  }

  static toSlug(text) {
    const spaced = dphelper.text.camelCase.toUnderscore(text);
    return dphelper.text.lower(spaced).replace(/\s+/g, '-');
  }

  static extractSearchTerms(text) {
    return dphelper.text.keywords(text);
  }

  static prepareForDisplay(text) {
    return dphelper.text.nl2br(
      dphelper.text.sanitize(text)
    );
  }

  static replaceSymbols(text, symbols) {
    return dphelper.text.replaceText(text, symbols);
  }
}

// Usage
console.log(TextProcessor.formatTitle('HELLO WORLD'));
// "Hello world"

console.log(TextProcessor.toSlug('User Name First'));
// "user_name_first"

console.log(TextProcessor.extractSearchTerms('React and Vue are Frameworks'));
// ["react", "vue", "frameworks"]

Details

• Author: Dario Passariello

• Version: 0.0.2

• Creation Date: 20210101

• Last Modified: 20260220

• Environment: both (browser + Node.js)

---

Automatically generated document