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第十週web作業3

Arrow function restore

var materials = [
  'Hydrogen',
  'Helium',
  'Lithium',
  'Beryllium'
];

console.log(materials.map(material => material.length));


寫出這個的標準函式形式,就像下面這個形式一樣
var selected = allJobs.filter(function (job) {
return job.isSelected();
};

var selected = allJobs.filter(job => job.isSelected());

 

標準函式形式:

var materials = [
  'Hydrogen',
  'Helium',
  'Lithium',
  'Beryllium'
]; console.log(materials.map(function(materils){
                    return materils.length()
})