How to loop inside JSX?
You can simply use Array.prototype.map
with ES6 arrow function syntax.
For example, the items
array of objects is mapped into an array of components:
<tbody>{items.map((item) => (<SomeComponent key={item.id} name={item.name} />))}</tbody>
But you can't iterate using for
loop:
<tbody>for (let i = 0; i < items.length; i++) {<SomeComponent key={items[i].id} name={items[i].name} />}</tbody>
This is because JSX tags are transpiled into function calls, and you can't use statements inside expressions. This may change thanks to do
expressions which are stage 1 proposal.
December 30, 2021
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