Created
September 17, 2018 09:44
-
-
Save shanbhardwaj/70168a94ba193b4a4612cce45f3b0d9b to your computer and use it in GitHub Desktop.
calculate memory size of javascript object, it is not a accurate value!
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
function memorySizeOf(obj) { | |
var bytes = 0; | |
function sizeOf(obj) { | |
if(obj !== null && obj !== undefined) { | |
switch(typeof obj) { | |
case 'number': | |
bytes += 8; | |
break; | |
case 'string': | |
bytes += obj.length * 2; | |
break; | |
case 'boolean': | |
bytes += 4; | |
break; | |
case 'object': | |
var objClass = Object.prototype.toString.call(obj).slice(8, -1); | |
if(objClass === 'Object' || objClass === 'Array') { | |
for(var key in obj) { | |
if(!obj.hasOwnProperty(key)) continue; | |
sizeOf(obj[key]); | |
} | |
} else bytes += obj.toString().length * 2; | |
break; | |
} | |
} | |
return bytes; | |
}; | |
function formatByteSize(bytes) { | |
if(bytes < 1024) return bytes + " bytes"; | |
else if(bytes < 1048576) return(bytes / 1024).toFixed(3) + " KiB"; | |
else if(bytes < 1073741824) return(bytes / 1048576).toFixed(3) + " MiB"; | |
else return(bytes / 1073741824).toFixed(3) + " GiB"; | |
}; | |
return formatByteSize(sizeOf(obj)); | |
}; |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment