How to change value of >= to ascii character in TypeScript file [closed]-CodePudding

I'm trying to check if a string has >= and then, if so, replace that with the ascii character for greater than and equal to. I'm working in Angular in the TS file and currently have:

@Input()
  public set textLabel(value: string) {
  let labelSymbols = value
  // figure out how to check if string has >=
  // if string has >=, replace with ASCII character
  this._textLabel = labelSymbols

  this._changeDetectorRef.detectChanges();
}
  public get textLabel(): string {
    return this._textLabel
  }
  private _textLabel: string;

What do I need to do to change the greater than and equal to when it occurs in the string?

CodePudding user response：

From the info I got from your comment, you are simply looking for a search and replace. You can use the replaceAll function to do that.

function replaceAllGreaterOrEqualsChar(input) {
  return input.replaceAll('>=', '≥');
}

const originalString = "this is >= a test, with >= multiple instances.";

// we pass the original string in our custom function,
const output = replaceAllGreaterOrEqualsChar(originalString);

// we print the results to the console.
console.log('output', output);

CodePudding user response：

You can use the regular expression, />=/g to find every occurrence of >= and replace it with ≥, as shown in the below code snippet,

@Input()
public set textLabel(value: string) {
  let regexToMatch = />=/g
  this._textLabel = value.replace(regexToMatch, "≥");;

  this._changeDetectorRef.detectChanges();
}

public get textLabel(): string {
  return this._textLabel
}

private _textLabel: string;