In a nutshell

This is the method signature:

_.debounce(func, [wait=0], [options={}])

Lodash’s debounce function creates a “debounced” function that delays invoking the given func until after wait milliseconds have elapsed since the last invocation.

Examples

// Avoid costly calculations while the window size is in flux.
jQuery(window).on('resize', _.debounce(calculateLayout, 150));

// Cancel the trailing debounced invocation.
jQuery(window).on('popstate', debounced.cancel);

Other notes

• You can use a cancel method to cancel delayed func invocations.
• You can use a flush method to immediately invoke delayed func invocations.
• The func will be invoked with the last arguments passed to debounced function.
• Subsequent calls of func will return the result of the last invocation.

Sources

• Lodash docs
• Debounce vs Throttle (CSS Tricks)