how to change line spacing in javascript code example

Example 1: line-height css

/* Keyword value */
line-height: normal;

/* Unitless values: use this number multiplied
by the element's font size */
line-height: 3.5;

/* <length> values */
line-height: 3em;

/* <percentage> values */
line-height: 34%;

/* Global values */
line-height: inherit;
line-height: initial;
line-height: unset;

Example 2: css line spacing

line-height: 1.5;  /* Prefered */

line-height: 1.5em;

line-height: 150%;

line-height: 24px;