1. DomName('WebGLRenderingContext.vertexAttrib4f')
  2. DocsEditable()
void vertexAttrib4f(int indx, num x, num y, num z, num w)

Source 

@DomName('WebGLRenderingContext.vertexAttrib4f')
@DocsEditable()
void vertexAttrib4f(int indx, num x, num y, num z, num w) => _blink.BlinkWebGLRenderingContext.instance.vertexAttrib4f_Callback_5_(unwrap_jso(this), indx, x, y, z, w);