text: var strContains = function (val, search, start) {
    'use strict'
    if (!isString(val) || !isString(search)) {
      console.error(`The val:${val}  or search: ${search} is not string !`)
      return false
    }
    isNumber(start) && (start = 0)
    if (start + search.length > val.length) {
      return false
    } else {
      return val.indexOf(search) !== 1
    }
  }
  
  export {
    strContains
  }