Tips on sorting an array within a map function

During the iteration process, I am facing a challenge where I need to modify certain values based on specific conditions. Here is the current loop setup:

response.result.forEach(item => {
                  this.tableModel.push(
                   new FolderSearchModel().map(item, this.resources)
                    );
            });

To address this issue, I'm looking for a way to incorporate an if statement within the loop to alter or format the mapped value when a particular condition is met. For example:

 if(item.element == "aa"){
item.element = "AA"
}

Answer №1

Your map function is not returning anything, which appears to be the problem at hand. Also, there seems to be some confusion regarding how Array.map and Array.filter operate.

When using Array.filter(function()=>{return item.element === "AA"}), you are creating a new array with only the items that meet the specified requirement (i.e., where item.element === "AA").

It seems like you're not actually filtering, but rather changing specific elements. Here's how you can do it:

FolderSearchModel().map(function (item, this.resources) {
   if(item.element == "aa"){
     item.element = "AA"
   }
  return item
})

This piece of code will only function correctly if FolderSearchModel() returns an array for mapping purposes. Map allows you to modify each item (or not, based on your conditions) and then return it back to the index.

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