JavaScriptใงๅๆๅ(Enum)ใไฝฟ็จใใ
ๅๆ(Enum)ใจใฏ
ๅคใใฎใใญใฐใฉใใณใฐ่จ่ชใงใฏใๅๆๅ(Enum)ใใใใพใใ JavaScriptใฎใใซใใคใณใชใใธใงใฏใใซใฏใใฎๆฉ่ฝใใชใใฎใง็ฌ่ชใงไฝๆใใฆใฟใพใใ
้ ๅใงไฝใ
const fruits = ['๐', '๐', '๐']
้ ๅใไฝฟ็จใใใจใๆ็ฉใฎไธ่ฆงใไฟๅญใงใใพใใใ ๅฉ็จ่ ใฏ้ ๅใฎ้ ๅบใ่ฆใใฆใใๅฟ ่ฆใใใใพใใ
console.log(fruits[0]) // 0่ฆ็ด ็ฎใ'๐'ใงใใใใจใ่ฆใใฆใใๅฟ ่ฆใใใ
ใชใใธใงใฏใใงไฝใ
ใใใฏใใชใใธใงใฏใใไฝฟ็จใใใใจใง่งฃๆฑบใงใใพใใ
const fruits = { apple: '๐', banana: '๐', grape: '๐', orange: '๐ ', }
ใชใใธใงใฏใใไฝฟ็จใใใจใ้ ๅใฎใใใซใคใณใใใฏในใๆๅฎใใๅฟ ่ฆใใชใใชใใพใใ
console.log(fruits.apple) // ๐
ใใใใใพใ ใใญใใใฃใ็ทจ้ใพใใฏๅ้คใงใใฆใใพใใจใใๅ้กใใใใพใใ
JavaScriptๅๆๅใฎไฝๆ
ๅๆๅใจใใฆไฝฟใใใใซใฏใ่ชญใฟๅใๅฐ็จใซใใๅฟ
่ฆใใใใพใใ
ใใใฏObject.freeze()
ใไฝฟ็จใใใใจใงๅฎ็พใงใใพใใ
const fruits = Object.freeze({ apple: '๐', banana: '๐', grape: '๐', orange: '๐ ', }) fruits.apple = 'ใใใ' console.log(fruits.apple) // ๐
ใใใงใใใญใใใฃใ็ทจ้ใใใใฎใ้ฒใใใจใใงใใพใใ