[英]TypeError: countries.map is not a function
19 | 19 | return ( 20 | 21 | handleCountryChange(e.target.value)}>
返回 ( 20 | 21 | handleCountryChange(e.target.value)}>
22 |
22 | Global |
全球 | ^ 23 |
^ 23 | {countries.map((country, i) => {country})} 24 |
{countries.map((country, i) => {country})} 24 | 25 |
25 |
19 | 19 | return ( 20 | 21 | handleCountryChange(e.target.value)}>
返回 ( 20 | 21 | handleCountryChange(e.target.value)}>
22 |
22 | Global |
全球 | ^ 23 |
^ 23 | {countries.map((country, i) => {country})} 24 |
{countries.map((country, i) => {country})} 24 | 25 |
25 |
19 | 19 | return ( 20 | 21 | handleCountryChange(e.target.value)}>
返回 ( 20 | 21 | handleCountryChange(e.target.value)}>
22 |
22 | Global |
全球 | ^ 23 |
^ 23 | {countries.map((country, i) => {country})} 24 |
{countries.map((country, i) => {country})} 24 | 25 |
25 |
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