Angular Typescript consistently returns false when comparing arrays

I've been working on comparing two nested arrays, but it keeps returning false.

The goal is to compare the saleLineList in each saleBlock from this.saleBlockList with the saleLineList in each saleBlock from saleBlockList.

Even after modifying the data, it's still not giving the desired result. I've invested a lot of time into this, but can't seem to pinpoint the issue. Any help would be greatly appreciated. Thank you.

let check = saleBlockList.every(item => this.saleBlockList.every(saleBlock => saleBlock.saleLineList == item.saleLineList)) 

console.log('check', check)
javascriptangulartypescriptloops

Answer №1

Not sure how your list is set up, but I recommend using:

let validate = saleBlockList.every(item => this.saleBlockList.findIndex(saleBlock => saleBlock.saleLineList == item.saleLineList)) 
console.log('validate', validate)

instead of

let validate = saleBlockList.every(item => this.saleBlockList.findIndex(saleBlock => saleBlock.saleLineList === item.saleLineList)) 
console.log('validate', validate)

If that doesn't work, feel free to share more code for further assistance

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