Created
January 21, 2020 10:27
-
-
Save ajays97/bd50af8b600c6a3d3c11e5a5967f24a1 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