把代码像小说一样进行推荐

    var is = {
      arr: function (a) {
        return Array.isArray(a)
      },
      obj: function (a) {
        return stringContains(Object.prototype.toString.call(a), 'Object')
      },
      pth: function (a) {
        return is.obj(a) && a.hasOwnProperty('totalLength')
      },
      svg: function (a) {
        return a instanceof SVGElement
      },
      inp: function (a) {
        return a instanceof HTMLInputElement
      },
      dom: function (a) {
        return a.nodeType || is.svg(a)
      },
      str: function (a) {
        return typeof a === 'string'
      },
      fnc: function (a) {
        return typeof a === 'function'
      },
      und: function (a) {
        return typeof a === 'undefined'
      },
      nil: function (a) {
        return is.und(a) || a === null
      },
      hex: function (a) {
        return /(^#[0-9A-F]{6}$)|(^#[0-9A-F]{3}$)/i.test(a)
      },
      rgb: function (a) {
        return /^rgb/.test(a)
      },
      hsl: function (a) {
        return /^hsl/.test(a)
      },
      col: function (a) {
        return is.hex(a) || is.rgb(a) || is.hsl(a)
      },
      key: function (a) {
        return (
          !defaultInstanceSettings.hasOwnProperty(a) &&
          !defaultTweenSettings.hasOwnProperty(a) &&
          a !== 'targets' &&
          a !== 'keyframes'
        )
      },
    }