js code example to get the number of bytes of the submitted string

js code for calculating the number of bytes in string

Method 1:

The code is as follows:

function getBytesCount(str) 
{ 
var bytesCount = 0; 
if (str != null) 
{ 
for (var i = 0; i < str.length; i++) 
{ 
var c = str.charAt(i); 
if (/^[\u0000-\u00ff]$/.test(c)) 
{ 
bytesCount += 1; 
} 
else 
{ 
bytesCount += 2; 
} 
} 
} 
return bytesCount; 
}

Method 2:

The code is as follows:

function getBytesCount2(str) 
{ 
if (str == null) 
{ 
return 0; 
} 
else 
{ 
return (str.length + str.replace(/[\u0000-\u00ff]/g, "").length); 
} 
}

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