all files / src/utils/ index.js

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
 
 
1×
1×
 
 
 
 
 
 
 
 
 
 
 
 
 
1×
1×
1×
2×
2×
2×
2×
 
 
 
 
1×
 
 
 
 
 
 
 
 
 
1×
1×
1×
1×
5×
 
 
 
 
1×
 
 
 
 
1×
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
import * as colorsObj from './colors'
 
const colors = Object.keys(colorsObj)
export const getColor = function (color) {
  if (!color) return ''
  return colors.indexOf(color) !== -1 ? colorsObj[color] : color
}
 
export function isNotNull (val) {
  return val !== undefined && val !== null
}
 
export function isNull (val) {
  return val === undefined || val === null
}
 
export function merge (target) {
  for (var i = 1, j = arguments.length; i < j; i++) {
    var source = arguments[i]
    for (var prop in source) {
      Eif (source.hasOwnProperty(prop)) {
        var value = source[prop]
        Eif (value !== undefined) {
          target[prop] = value
        }
      }
    }
  }
  return target
}
 
export function getWidth (w) {
  let width = String(w)
  if (width && width.indexOf('%') === -1 && width.indexOf('px') === -1) width += 'px'
  return width
}
 
export function isPc () {
  var uaInfo = navigator.userAgent
  var agents = ['Android', 'iPhone', 'Windows Phone', 'iPad', 'iPod']
  var flag = true
  for (var i = 0; i < agents.length; i++) {
    Iif (uaInfo.indexOf(agents[i]) > 0) {
      flag = false
      break
    }
  }
  return flag
}
 
export function retina () {
  // 处理retina屏幕显示效果
  Eif (isPc()) return
  var classNames = []
  let pixelRatio = window.devicePixelRatio || 1
  classNames.push('pixel-ratio-' + Math.floor(pixelRatio))
  if (pixelRatio >= 2) {
    classNames.push('retina')
  }
 
  let html = document.getElementsByTagName('html')[0]
 
  classNames.forEach((className) => html.classList.add(className))
}
 
/**
 * 将 String, Object, Array 转成 Array
 */
export function convertClass (classes) {
  let newClasses = []
  if (!classes) return newClasses
  if (classes instanceof Array) {
    newClasses = newClasses.concat(classes)
  } else if (classes instanceof Object) {
    for (const name in classes) {
      if (classes[name]) newClasses.push(name)
    }
  } else {
    newClasses = newClasses.concat(classes.split(' '))
  }
  return newClasses
}