Convert reduce function to work with IE

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小蘑菇
小蘑菇 2021-01-15 04:40

Alright, so I had some help a couple months ago with coming up with a solution to keep count of the elements in an array: Loop through multiple array and keep count of each

2条回答
  •  野的像风
    2021-01-15 05:19

    IE 11 doesn't support arrow functions [1], nor destructuring [2], so convert it to ES5 syntax:

    var b = data.reduce(function(acc, cur) {
      cur.ProductHandlingTypes
        .map(function(obj) {
          return obj.Name
        })
        .forEach(function(n) {
          return acc[n] = (acc[n] || 0) + 1
        })
    
      return acc
    }, {});
    

    [1] http://caniuse.com/#feat=arrow-functions

    [2] http://kangax.github.io/compat-table/es6/#test-destructuring

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