basicHelpers.ts

/**
 * 首字母大写
 */
export function ucfirst(str: string) {
  return str.slice(0, 1).toUpperCase() + str.slice(1).toLowerCase()
}

export function escapeHtml(text: string): string {
  return text
    .replace(/&/g, `&`)
    .replace(/</g, `&lt;`)
    .replace(/>/g, `&gt;`)
    .replace(/"/g, `&quot;`)
    .replace(/'/g, `&#39;`)
}

export function unescapeHtml(text: string): string {
  return text
    .replace(/&quot;/g, `"`)
    .replace(/&#39;/g, `'`)
    .replace(/&lt;/g, `<`)
    .replace(/&gt;/g, `>`)
    .replace(/&amp;/g, `&`)
}

export function simpleHash(str: string): string {
  let hash = 0
  for (let i = 0; i < str.length; i++) {
    const char = str.charCodeAt(i)
    hash = ((hash << 5) - hash) + char
    hash = hash & hash
  }
  return Math.abs(hash).toString(36)
}