What is the most effective way to eliminate just the last underscore in a string by employing the

Question

What is the most effective way to eliminate just the last underscore in a string by employing the

I am currently facing an issue with table cell editing. I have the following code that removes all underscores (_) from a string if it contains "test_1_". However, my requirement is to only remove the last underscore and have the string appear as "test_1".

The JavaScript section of the code needs some expert assistance:

// Obtain edit id, field name, and value
  var id = this.id;
  var split_id = id.split("_");
  var field_name = split_id[0];
  var edit_id = split_id[1];
  var value = $(this).val();

This is how my HTML looks like:

<input type='text' class='txtedit' value='<?php echo date('Y-m-d h:i:s a', strtotime($row['time_in'])); ?>' id='time_in_<?php echo $row['hours']; ?>' >

Now, if you observe closely, the input field's ID appears as 'time_in_', but after splitting, I want 'time_in' to remain while removing only the last underscore.

I hope you understand my point clearly.

Thank you for your valuable help!

javascript jquery ajax split

Answer 1

Answer №1

In order to remove all occurrences of the "_" character from a given string and obtain an array containing the separate parts on both sides of each "_", you can utilize the split function. However, please bear in mind that this approach will result in an empty string as the last item in the resulting array. To overcome this, you can simply use the pop method to remove the last item from the array before joining the remaining items back together using the join function with "_" as the delimiter:

const inputString = "This_Is_My_String_";
let separatedArray = inputString.split("_");

separatedArray.pop();

const finalString = separatedArray.join("_");

console.log(finalString);

Answer 2

In order to remove all occurrences of the "_" character from a given string and obtain an array containing the separate parts on both sides of each "_", you can utilize the split function. However, please bear in mind that this approach will result in an empty string as the last item in the resulting array. To overcome this, you can simply use the pop method to remove the last item from the array before joining the remaining items back together using the join function with "_" as the delimiter:

const inputString = "This_Is_My_String_";
let separatedArray = inputString.split("_");

separatedArray.pop();

const finalString = separatedArray.join("_");

console.log(finalString);

Answer 3

Answer №2

If your intention is to eliminate the final character of the provided string, only if it happens to be underscore (_), then there's a more straightforward option than using the `split()` function. Consider the following snippet:

let updatedValue = this.id.slice(0, -1)

Answer 4

If your intention is to eliminate the final character of the provided string, only if it happens to be underscore (_), then there's a more straightforward option than using the `split()` function. Consider the following snippet:

let updatedValue = this.id.slice(0, -1)

Answer 5

Answer №3

Instead of converting it to an array and rejoining it as a string, there is a more efficient way to achieve the desired result by utilizing string manipulation techniques.

let input = "test_1_";
console.log(input.substring(0, input.lastIndexOf('_')));

Answer 6

Instead of converting it to an array and rejoining it as a string, there is a more efficient way to achieve the desired result by utilizing string manipulation techniques.

let input = "test_1_";
console.log(input.substring(0, input.lastIndexOf('_')));

What is the most effective way to eliminate just the last underscore in a string by employing the

Answer №1

Answer №2

Answer №3

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