实用工具

utils.js

/**
 * 获取表单数据对象
 *
 * @param {HTMLFormElement | string} form
 * @return {object}
 */
export const getFormData = form => {
  let data = {}
  const kvObjArray = $(form).serializeArray()

  for (let obj of kvObjArray) {
    if (data[obj.name]) {
      // 多選
      data[obj.name] = [data[obj.name], $.trim(obj.value)].join(',')
    } else {
      data[obj.name] = $.trim(obj.value)
    }
  }

  return data
}

/**
 * 將 queryString 解析为对象
 *
 * @param {string} search
 * @return {object}
 */
export const queryParse = (search = window.location.search) => {
  if (!search) return {}
  const queryString = search[0] === '?' ? search.substring(1) : search
  const query = {}
  queryString.split('&').forEach(queryStr => {
    const [key, value] = queryStr.split('=')
    /* istanbul ignore else */
    if (key) query[decodeURIComponent(key)] = decodeURIComponent(value)
  })

  return query
}

/**
 * 将对象转化为 queryString
 *
 * @param {object} query
 * @return {string}
 */
export const queryStringify = query => {
  const queryString = Object.keys(query)
    .map(key => `${key}=${encodeURIComponent(query[key] || '')}`)
    .join('&')
  return queryString
}

/**
 * 去除 url 中特定的 queryString
 *
 * @param {string} key
 * @param {string} href
 * @return {string}
 */
export const removeQueryString = (key, href = window.location.href) => {
  const [url, search] = href.split( '?' )

  if (!search) {
    return url
  }

  let queryString = search.split('&')
  let finalQuery = ''

  if (queryString.length) {
    queryString = queryString.filter(item => !item.startsWith(key + '='))
  }

  if (!queryString.length) {
    return url
  }

  finalQuery = queryString.length > 1 ? queryString.join('&') : queryString[0]
  return url + '?' + finalQuery
}

// 通用校验
export const Verify = {
  present(val) {
    val = $.trim(val)

    if (val === '') {
      return false
    }

    return true
  },
  isEmail(val) {
    const reg = /^([a-zA-Z0-9_-])+%40([a-zA-Z0-9_-])+((\.[a-zA-Z0-9_-]{2,3}){1,2})$/
    return reg.test(val)
  }
}

// 防 XSS
export function escapeHtml(str) {
  if (str.length === 0) return ''
  let s
  s = str.replace(/&/g, '&')
  s = s.replace(/</g, '&lt;')
  s = s.replace(/>/g, '&gt;')
  s = s.replace(/ /g, '&nbsp;')
  s = s.replace(/\'/g, '&#39;')
  s = s.replace(/\"/g, '&quot;')

  return s
}