Javascript Array
้ ๅใฎๆๅพใฎๅคใๅๅพใใใๅ ดๅ
.length-1const lastSelectedProductId = selectedProductId[selectedProductId.length - 1];
ย
.popconst lastSelectedProductId = [...selectedProductId].pop();
popใไฝฟใๅ ดๅใฏใณใใผใใฆๆธใใใจใๅฟใใชใใงใใ ใใ
pop() ใฎ่ฟใๅคใฏ T | undefined ใฎใใTypeScript ็ใซใฏๆญฃใใๅไฝใใพใใ(falsy ใใงใใฏใ่กใฃใฆใใ emit ใใใๅฟ
่ฆใๅบใฆใใ)
ย
้ ๅใใๅฅใฎ้ ๅใซๅซใพใใฆใใๅคใๅ้คใใใๅ ดๅ
.filter .includesconst isProductUnselected = (id) => !selectedProductId.includes(id); const filteredProducts = () => products.filter(({ id }) => isProductUnselected(id)));
ย
ๅ่ใซใใใตใคใ