问如何从字符串(Javascript regex)中提取具有可选出现项的冒号分隔的键值？

EN

var mystring = 'Last years budget %%table name:budget year:last%% was based on %%tablename:expenses%%.'
const re = /(?:%%table )?([^:\s%]+:[^%\s]+)/g;

while (match = re.exec(mystring)) {
  	console.log(match[1]);
}

const mystring = `Last years budget %%table name:budget year:last%% was based on %%tablename:expenses%%.

This years budget %%table name:budget year:current%% approved:no is based on %%table name:expenses type:forecast%%`

const tables = []

mystring.replace(/%%table((?:\s*\S+:\S+)+)\s*%%/g, (table, entries) => tables.push(entries))

tables.forEach((entries, index, array) => {
  array[index] = entries.trim().split(/\s+/g).map(entry => entry.split(':'))
})

console.log(tables)