Dividing a string in Javascript with one identified character and an assortment of unknown characters

Question

Dividing a string in Javascript with one identified character and an assortment of unknown characters

I need assistance with splitting a string by a specific character, such as a '/'. However, I also require the characters directly preceding the split character up to the space before them to be included in the result.

For instance:

let myStr =

"bob u/ used cars nr/ no resale value i/ information is attached to the vehicle tag bb/ Joe's wrecker service"

I can split by the '/' using

mySplitStr = myStr.split('/');

But the resulting array is like

mySplitStr[1] = "bob u"
mySplitStr[2] = " used cars nr"
mySplitStr[3] = " no resale value i"

etc

What I actually need is to extract the characters just before the '/'.

u nr i etc

This information is crucial in determining how to handle data following the '/'.

Thank you for any help you can provide.

javascript arrays string split

Answer 1

Answer №1

If you want to extract special characters using a regular expression with the split method, you can do the following:

let parts = myStr.split(/\s*(\S+)\/\s*/);

This will place the special characters at every odd position in the resulting array.

let myStr = "bob u/ used cars nr/ no resale value i/ information is attached to the vehicle tag bb/ Joe's wrecker service";
let parts = myStr.split(/\s*(\S+)\/\s*/);

console.log(parts);

.as-console-wrapper { max-height: 100% !important; top: 0; }

To structure the result further, you can use the special character combinations as keys in an object:

let myStr = "bob u/ used cars nr/ no resale value i/ information is attached to the vehicle tag bb/ Joe's wrecker service";
let obj = myStr.split(/\s*(\S+)\/\s*/).reduceRight( (acc, v) => {
    if (acc.default === undefined) {
        acc.default = v;
    } else {
        acc[v] = acc.default;
        acc.default = undefined;
    }
    return acc;
}, {});
console.log(obj);

Answer 2

If you want to extract special characters using a regular expression with the split method, you can do the following:

let parts = myStr.split(/\s*(\S+)\/\s*/);

This will place the special characters at every odd position in the resulting array.

let myStr = "bob u/ used cars nr/ no resale value i/ information is attached to the vehicle tag bb/ Joe's wrecker service";
let parts = myStr.split(/\s*(\S+)\/\s*/);

console.log(parts);

.as-console-wrapper { max-height: 100% !important; top: 0; }

To structure the result further, you can use the special character combinations as keys in an object:

let myStr = "bob u/ used cars nr/ no resale value i/ information is attached to the vehicle tag bb/ Joe's wrecker service";
let obj = myStr.split(/\s*(\S+)\/\s*/).reduceRight( (acc, v) => {
    if (acc.default === undefined) {
        acc.default = v;
    } else {
        acc[v] = acc.default;
        acc.default = undefined;
    }
    return acc;
}, {});
console.log(obj);

Answer 3

Answer №2

Here is the solution you've been searching for:

"alice p/ used books n/ no bookmark s/ story is attached to the page tag gg/ Lana's bookshop"
  .split('/')
  .map(splitPart => {
    const wordsInPart = splitPart.split(' ');
    return wordsInPart[wordsInPart.length - 1];
  });

// Result: ["p", "n", "s", "gg", "bookshop"]

Simply splitting by '/' won't suffice. Remember to iterate through each part of the split result and extract the final "word" from it.

Answer 4

Here is the solution you've been searching for:

"alice p/ used books n/ no bookmark s/ story is attached to the page tag gg/ Lana's bookshop"
  .split('/')
  .map(splitPart => {
    const wordsInPart = splitPart.split(' ');
    return wordsInPart[wordsInPart.length - 1];
  });

// Result: ["p", "n", "s", "gg", "bookshop"]

Simply splitting by '/' won't suffice. Remember to iterate through each part of the split result and extract the final "word" from it.

Answer 5

Answer №3

Once you have split your string, you will end up with an array containing different elements. The final set of characters within each element is what you are interested in, and you can extract it using the following code snippet:

let mySplitText = myText.split('/');
for(let j = 0; j < mySplitText.length; j++) {
    let mySplitTextElement = mySplitText[j].split(" "); // Split the current text element
    let lastCharacterSet = mySplitTextElement[mySplitTextElement.length -1]; // Extract the last set of characters
    let myCurrentText = mySplitTextElement.splice(mySplitTextElement.length -1, 1); // Remove the last set of characters from the text element
        myCurrentText = mySplitTextElement.join(" "); // Rejoin the text element into a single string
    switch(lastCharacterSet) {
        case "u":
            // Insert your code here
        case "nr":
            // Insert your code here
        case "i":
            // Insert your code here
    }
}

During the initial loop iteration:

// lastCharacterSet is "u"
// myCurrentText is "bob"

Answer 6

Once you have split your string, you will end up with an array containing different elements. The final set of characters within each element is what you are interested in, and you can extract it using the following code snippet:

let mySplitText = myText.split('/');
for(let j = 0; j < mySplitText.length; j++) {
    let mySplitTextElement = mySplitText[j].split(" "); // Split the current text element
    let lastCharacterSet = mySplitTextElement[mySplitTextElement.length -1]; // Extract the last set of characters
    let myCurrentText = mySplitTextElement.splice(mySplitTextElement.length -1, 1); // Remove the last set of characters from the text element
        myCurrentText = mySplitTextElement.join(" "); // Rejoin the text element into a single string
    switch(lastCharacterSet) {
        case "u":
            // Insert your code here
        case "nr":
            // Insert your code here
        case "i":
            // Insert your code here
    }
}

During the initial loop iteration:

// lastCharacterSet is "u"
// myCurrentText is "bob"

Dividing a string in Javascript with one identified character and an assortment of unknown characters

Answer №1

Answer №2

Answer №3

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