simple multi-field form example

[knzai]

Description

Simple example of using FormData to handle a multi-field form

Checklist

• [x ] I have reviewed my own code
• I have added tests
  It doesn't look like the example generally have tests?

[github-actions]

Size Comparison

examples	master (KB)	pull request (KB)	diff (KB)	diff (%)
async_clock	98.068	98.173	+0.104	+0.107%
boids	168.159	168.259	+0.100	+0.059%
communication_child_to_parent	90.539	90.642	+0.103	+0.113%
communication_grandchild_with_grandparent	102.779	102.847	+0.067	+0.066%
communication_grandparent_to_grandchild	98.203	98.279	+0.076	+0.078%
communication_parent_to_child	86.897	86.999	+0.102	+0.117%
contexts	102.372	102.478	+0.105	+0.103%
counter	83.542	83.626	+0.084	+0.101%
counter_functional	83.970	84.071	+0.102	+0.121%
dyn_create_destroy_apps	86.926	87.028	+0.103	+0.118%
file_upload	97.939	98.094	+0.154	+0.158%
form	N/A	83.643	N/A	N/A
function_memory_game	164.259	164.358	+0.100	+0.061%
function_router	337.352	337.878	+0.526	+0.156%
function_todomvc	158.268	158.336	+0.068	+0.043%
futures	226.148	226.219	+0.070	+0.031%
game_of_life	105.628	105.792	+0.164	+0.155%
immutable	186.278	186.591	+0.312	+0.168%
inner_html	77.901	78.005	+0.104	+0.133%
js_callback	105.852	106.011	+0.159	+0.150%
keyed_list	195.678	195.793	+0.115	+0.059%
mount_point	80.876	80.949	+0.073	+0.091%
nested_list	111.612	111.717	+0.104	+0.094%
node_refs	88.213	88.312	+0.100	+0.113%
password_strength	1712.032	1712.132	+0.100	+0.006%
portals	91.119	91.212	+0.093	+0.102%
router	308.030	308.773	+0.743	+0.241%
simple_ssr	138.079	138.202	+0.123	+0.089%
ssr_router	374.568	375.138	+0.569	+0.152%
suspense	112.432	112.508	+0.076	+0.068%
timer	86.465	86.564	+0.100	+0.115%
timer_functional	95.230	95.291	+0.061	+0.064%
todomvc	139.416	139.489	+0.073	+0.053%
two_apps	83.568	83.661	+0.093	+0.111%
web_worker_fib	132.148	132.229	+0.080	+0.061%
web_worker_prime	182.673	182.804	+0.131	+0.072%
webgl	80.578	80.668	+0.090	+0.111%

✅ None of the examples has changed their size significantly.