$\overrightarrow{\mathrm{A}} \mathrm{and} \overrightarrow{\mathrm{B}}$  are two vectors given by $\overrightarrow{\mathrm{A}}=\left(2\widehat{\mathrm{i}}+3\widehat{\mathrm{j}}\right)\mathrm{and}\overrightarrow{\mathrm{B}}=\left(\widehat{\mathrm{i}}+\widehat{\mathrm{j}}\right).$  The magnitude of component of  $\overrightarrow{\mathrm{A}} \mathrm{along} \overrightarrow{\mathrm{B}} \mathrm{is}$______