Function setElementAttribute

packages/core/src/render3/instructions/shared.ts:521–542

(
  renderer: Renderer,
  element: RElement,
  namespace: string | null | undefined,
  tagName: string | null,
  name: string,
  value: any,
  sanitizer: SanitizerFn | null | undefined,
)

}

export function setElementAttribute(
  renderer: Renderer,
  element: RElement,
  namespace: string | null | undefined,
  tagName: string | null,
  name: string,
  value: any,
  sanitizer: SanitizerFn | null | undefined,
) {
  if (value == null) {
    if (sanitizer != null) {
      // Execute sanitizer to enforce security controls (e.g., neutralizing iframe)
      sanitizer(value, tagName || '', name);
    }
    renderer.removeAttribute(element, name, namespace);
  } else {
    const strValue =
      sanitizer == null ? renderStringify(value) : sanitizer(value, tagName || '', name);

    renderer.setAttribute(element, name, strValue as string, namespace);
  }
}

/**
 * Sets initial input properties on directive instances from attribute data