JavaScript tutorial: Removing spaces in column names and creating case-insensitive queries

Question

JavaScript tutorial: Removing spaces in column names and creating case-insensitive queries

This morning, I encountered an issue while working on a web app that I am currently developing.

The app is designed to read data from an excel file and import it into a SQL table.

During the basic validation process, I noticed that the column headers in these excel files sometimes have slight variations. Unfortunately, there is no consistency in their naming convention and I do not have the authority to address this problem.

For instance, here is a sample check:

xdata['Meeting ID'] === undefined

Below are different permutations of how the column header may appear:

Meeting ID MeetingID MeetingiD MeetingId

My question is whether there is a method to remove spaces in the column header names and make them case insensitive?

I have searched online for potential solutions, but most of what I found addresses the column values rather than the header itself. It's possible that my search terms are not accurate.

If anyone has an example or suggestion on how to tackle this issue, I would greatly appreciate your input.

Thank you, Erasmo

UPDATE

After trying one of the suggested solutions, I encountered an error:

https://i.sstatic.net/xlmvS.png

https://i.sstatic.net/6XUh2.png

javascript angularjs

Answer 1

Answer №1

One way to determine if an object is a string or not is by using the typeof operator. Give it a shot with this example:

normalizedColumnName = typeof data['Meeting'] === 'string' ? data['Meeting'].toLowerCase().replace(" ", "");

Answer 2

One way to determine if an object is a string or not is by using the typeof operator. Give it a shot with this example:

normalizedColumnName = typeof data['Meeting'] === 'string' ? data['Meeting'].toLowerCase().replace(" ", "");

Answer 3

Answer №2

Could you please verify if the string begins with the word "Meeting"?

let check = str.startsWith("Meeting");

if(check === true) {
name = "Meeting ID"
}

Afterwards, assign it to the name variable.

xdata[name]

Answer 4

Could you please verify if the string begins with the word "Meeting"?

let check = str.startsWith("Meeting");

if(check === true) {
name = "Meeting ID"
}

Afterwards, assign it to the name variable.

xdata[name]

Answer 5

Answer №3

The process of transforming input into a standardized output is known as "normalization". This can be achieved by coercing the input data to adhere to a specific format.

One way to normalize data is demonstrated in the following simple example:

normalizedColumnName = originalColumnName.toLowerCase().replace(" ", "")

An updated example showcasing normalization is provided below:

xData = {
  "Meeting ID": [1,2,3],
  "Something Else": [3,4,5],
}
normalizedXData = {}
Object.keys(xData).map(function(columnName) {
  normalizedXData[ columnName.toLowerCase().replace(" ", "") ] = xData[columnName]
})

// normalizedXData === { meetingid: [ 1, 2, 3 ], somethingelse: [ 3, 4, 5 ] }

To enhance readability and compatibility with various browsers, consider using "in" instead of comparing to undefined when checking for a specific key in an object:

if (!("meetingid" in normalizedXData)) {
    console.log("your error message")
}

It's important to note that comparing to undefined directly can be unreliable, particularly with older browser versions.

Answer 6

The process of transforming input into a standardized output is known as "normalization". This can be achieved by coercing the input data to adhere to a specific format.

One way to normalize data is demonstrated in the following simple example:

normalizedColumnName = originalColumnName.toLowerCase().replace(" ", "")

An updated example showcasing normalization is provided below:

xData = {
  "Meeting ID": [1,2,3],
  "Something Else": [3,4,5],
}
normalizedXData = {}
Object.keys(xData).map(function(columnName) {
  normalizedXData[ columnName.toLowerCase().replace(" ", "") ] = xData[columnName]
})

// normalizedXData === { meetingid: [ 1, 2, 3 ], somethingelse: [ 3, 4, 5 ] }

To enhance readability and compatibility with various browsers, consider using "in" instead of comparing to undefined when checking for a specific key in an object:

if (!("meetingid" in normalizedXData)) {
    console.log("your error message")
}

It's important to note that comparing to undefined directly can be unreliable, particularly with older browser versions.

JavaScript tutorial: Removing spaces in column names and creating case-insensitive queries

Answer №1

Answer №2

Answer №3

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