Created
March 16, 2017 17:03
-
-
Save paularmstrong/b8995d2d1d5bc1b6ced2489486c7eaeb 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