Creating a String-Helper component using Angular and TypeScript

One issue I'm facing is that when using the german ü, ä, ö characters in HTML, they are showing up as unknown symbols. To properly display them, you can write ü as "&uuml ;" and ä as "&auml ;", and so on. However, my challenge is coming from trying to replace ü with "&uuml ;" in a typescript method.

Below is the method I've created in typescript to replace ü with "&uuml ;"

public stringHelper(textUml: string): string {
    textUml = textUml.replace("ü", "ü");
    debugger;
    return textUml;
}

<button class="btn btn-success" (click)="addKeySkill()">{{stringHelper("Hinzufügen")}}</button>

However, instead of displaying "Hinzufügen," it appears as "Hinzuf&uuml ;gen".

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

angulartypescriptspecial-characters

Answer №1

For a more efficient approach, utilize Regex and ensure to use the global flag g for replacing all occurrences (otherwise, only the initial "ü" will be replaced):

updatedText = updatedText.replace('/ü/g', "&uuml;");

Answer №2

When utilizing {{ }} in your HTML template, Angular automatically escapes the string. This is why it's normal for your & to be escaped and not recognized as an HTML entity.

To resolve this issue, keep the character unescaped (using ü) and everything should function correctly.

If you prefer to input exact HTML code without escaping variable contents, you'll need to create a custom pipe, then utilize innerHTML to display the code.

In your scenario, after defining the pipe, you would include:

<button class="btn btn-success" (click)="addKeySkill()">
  <span [innerHTML]="stringHelper('Hinzufügen') | keepHtml"></span>
</button>

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