Angular 用两个条件迭代一个数组

Question

I have this array and these values:

levels$: Observable<any[]> = [
    {
       name: 'first level primary school'     
    }, 
    {
       name: 'second level primary school'     
    },
    {
      name: 'first level secondary school'     
    }
]

const isPrimarySchool = false
const isSecondarySchool = false

And I want to iterate the array and find if there is a string with the word 'primary' or 'secondary' (it could be both), and turn the value of isPrimarySchool or isSecondarySchool to true, or both if it's the case.

The method that I found to resolve this, is this one:

this.levels$.subscribe(levels =>
      levels.forEach(level => {
        if (level.name.toLowerCase().includes('primary') {
          this.isPrimarySchool = true
        }
        if (level.name.toLowerCase().includes('secondary')) {
          this.isSecondarySchool = true
        }
      })
    )

Is there a better way to resolve the two 'if' parts, using lodash or normal javascript?

Answer 1

this.levels$.subscribe(levels =>{
this.isPrimarySchool =levels.some(level => level.name.toLowerCase().includes('primary'));
this.isSecondarySchool = levels.some(level => level.name.toLowerCase().includes('secondary'));
    })

Answer 2

You could use If/Else instead of 2 Ifs, and use a 3rd else.

Remember that using If/elsif/else will be less costly than adding 2 If's.

Or, you could ternary operators but that's most likely not a better approach.