Tips for eliminating white space in Angular 8 data binding

Within my Typescript file, I currently have the following code:

this.comments = this.comment1 + '\n' + this.comment2 + '\n' + this.comment3;

I have also included a conditional statement that checks if comment1, comment2, or comment3 is empty and assigns it ' '.

When binding in HTML, I use the following:

{{comments}}

The current output appears as follows (assuming comment2 is an empty string):

comment1 value

comment3 value

This results in extra vertical spaces for comment2. How can I eliminate this vertical space when comment2 is empty?

Appreciate your assistance.

angulartypescript

Answer №1

Here's a suggestion for you to consider:

retrieveInput(input){
    if(!input){
      return '';
    }
    return input ? `${input}\n` : input;
}

this.inputs = retrieveInput(this.input1) + retrieveInput(this.input2) + retrieveInput(this.input3);

This method will only add a newline character if the input is not an empty string.

Answer №2

To achieve this result, one strategy involves utilizing an array in combination with the join method.

this.comments = [this.comment1, this.comment2, this.comment3].filter(item => item != null || item !== '').join('\n');

Explanation

In the initial step, a new array is created containing 3 string values. Subsequently, any empty elements within the array are removed using the filter function. Finally, the non-empty values are concatenated together with newline characters to form a single string value.

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