Created
June 13, 2017 09:38
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Get byte length
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function getByteLen(normal_val) { | |
// Force string type | |
normal_val = String(normal_val); | |
var byteLen = 0; | |
for (var i = 0; i < normal_val.length; i++) { | |
var c = normal_val.charCodeAt(i); | |
byteLen += c < (1 << 7) ? 1 : | |
c < (1 << 11) ? 2 : | |
c < (1 << 16) ? 3 : | |
c < (1 << 21) ? 4 : | |
c < (1 << 26) ? 5 : | |
c < (1 << 31) ? 6 : Number.NaN; | |
} | |
return byteLen; | |
} |
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