Jupyter Lab Notebook: Javascript Error: element.text is not a function

i am running following simple Javascript code in jupyter lab notebook using magic command

%%js
alert(‘hi’);
var a = 10;
var b = 20;
var c = a + b;
element.text©

and its throwing error

Javascript Error: element.text is not a function

but its working fine in classic jupyter notebook. Do we need to add any jar or configuration into jupyter lab for running this code successfully