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jsbench.me_1kjdcvhy9w.txt
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jsbench.me_1kjdcvhy9w.txt
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/*
https://jsbench.me/1kjdcvhy9w
propertyNames vs global symbols vs local symbols
also compares premade vs post created properties (name and symbols added after the object has been brought into existance)
eg objPreProps={abc:1} vs objPostProps={};objPostProps.abc=123;
*/
//post Object creation property added assembly
var objMaxProps = 5;
var testNames = ['abc', 'alongername', 'anyname', 'areallylongname', 'small'];
var objPostProps = {};//Object.create(null):
var objPostSymbG = {};
var objPostSymbL = {};
var postProps = [];
var postSymbG = [];
var postSymbL = [];
var objPreProps = {'abc':1, 'alongername':2, 'anyname':3, 'areallylongname':4, 'small':5};
var objPreSymbG = {[Symbol.for('abc')]:1, [Symbol.for('alongername')]:2, [Symbol.for('anyname')]:3, [Symbol.for('areallylongname')]:4, [Symbol.for('small')]:5};
var objPreSymbL = {[Symbol()]:1, [Symbol()]:2, [Symbol()]:3, [Symbol()]:4, [Symbol()]:5};
var preProps = Object.getOwnPropertyNames(objPreProps);
var preSymbG = Object.getOwnPropertySymbols(objPreSymbG);
var preSymbL = Object.getOwnPropertySymbols(objPreSymbL);
addLatePropsAndSyms();
function addLatePropsAndSyms(){
for (var i = 0; i < objMaxProps; i++) {
//lets make propertynames variable in length 1-16 chars
testNames.push(makeString(1+(Math.random()*16)|0));
}
var localSymb;
for (var j = 0; j < testNames.length; j++) {
localSymb = Symbol();
objPostProps[testNames[j]] = j;
objPostSymbG[Symbol.for(testNames[j])] = j;
objPostSymbL[localSymb] = j;
postProps.push(testNames[j]);
postSymbG.push(Symbol.for(testNames[j]));
postSymbL.push(localSymb);
}
function makeString(length){
var ret = '';
for (var i=0; i<length; i++){
ret+=String.fromCharCode(97+((Math.random()*26)|0));
}
return ret;
}
}
////////////////////////////////////////////////////////////////////////////////////////////////////////
//PreMadeObjectAccessViaPropertyName
for (var k = 0; k < objMaxProps; k++) {
objPreProps[preProps[k]]=objPreProps[preProps[k]];
}
//PreMadeObjectAccessViaSymbol
for (var k = 0; k < objMaxProps; k++) {
objPreSymbG[preSymbG[k]]=objPreSymbG[preSymbG[k]];
}
//PreMadeObjectAccessViaSymbolLocal
for (var k = 0; k < objMaxProps; k++) {
objPreSymbL[preSymbL[k]]=objPreSymbL[preSymbL[k]];
}
//PostCreatedObjectAccessViaPropertyName
for (var k = 0; k < objMaxProps; k++) {
objPostProps[postProps[k]]=objPostProps[postProps[k]];
}
//PostCreatedObjectAccessViaSymbol
for (var k = 0; k < objMaxProps; k++) {
objPostSymbG[postSymbG[k]]=objPostSymbG[postSymbG[k]];
}
//PostCreatedObjectAccessViaSymbolLocal
for (var k = 0; k < objMaxProps; k++) {
objPostSymbL[postSymbL[k]]=objPostSymbL[postSymbL[k]];
}
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
//post Object creation property added assembly
var objMaxProps = 5;
var testNames = ['abc', 'alongername', 'anyname', 'areallylongname', 'small'];
var gS0 = Symbol.for('abc');
var gS1 = Symbol.for('alongername');
var gS2 = Symbol.for('anyname');
var gS3 = Symbol.for('areallylongname');
var gS4 = Symbol.for('small');
var lS0 = Symbol();
var lS1 = Symbol();
var lS2 = Symbol();
var lS3 = Symbol();
var lS4 = Symbol();
var objPostProps = {};//Object.create(null);
var objPostSymbG = {};//Object.create(null);
var objPostSymbL = {};//Object.create(null);
var postProps=[];
var postSymbG=[];
var postSymbL=[];
var objPreProps = {'abc':1, 'alongername':2, 'anyname':3, 'areallylongname':4, 'small':5};
var objPreSymbG = {[gS0]:1, [gS1]:2, [gS2]:3, [gS3]:4, [gS4]:5};
var objPreSymbL = {[Symbol()]:1, [Symbol()]:2, [Symbol()]:3, [Symbol()]:4, [Symbol()]:5};
var preProps = Object.getOwnPropertyNames(objPreProps);
var preSymbG = Object.getOwnPropertySymbols(objPreSymbG);
var preSymbL = Object.getOwnPropertySymbols(objPreSymbL);
addLatePropsAndSyms();
function addLatePropsAndSyms(){
for (var i = 0; i < objMaxProps; i++) {
//lets make propertynames variable in length 1-16 chars
testNames.push(makeString(1+(Math.random()*16)|0));
}
var localSymb;
for (var j = 0; j < objMaxProps; j++) {
localSymb = Symbol();
objPostProps[testNames[j]] = j;
objPostSymbG[Symbol.for(testNames[j])] = j;
objPostSymbL[localSymb] = j;
postProps.push(testNames[j]);
postSymbG.push(Symbol.for(testNames[j]));
postSymbL.push(localSymb);
}
function makeString(length){
var ret = '';
for (var i=0; i<length; i++){
ret+=String.fromCharCode(97+((Math.random()*26)|0));
}
return ret;
}
}
/////////////////////////////////////////////////////////////////////////////////////////////////////
//PreMadeObjectAccessViaPropertyName
for (var k = 0; k < objMaxProps; k++) {
objPreProps[preProps[k]]=objPreProps[preProps[k]];
}
//PreMadeObjectAccessViaSymbolGlobal
for (var k = 0; k < objMaxProps; k++) {
objPreSymbG[preSymbG[k]]=objPreSymbG[preSymbG[k]];
}
//PreMadeObjectAccessViaSymbolLocal
for (var k = 0; k < objMaxProps; k++) {
objPreSymbL[preSymbL[k]]=objPreSymbL[preSymbL[k]];
}
//PostCreatedObjectAccessViaPropertyName
for (var k = 0; k < objMaxProps; k++) {
objPostProps[postProps[k]]=objPostProps[postProps[k]];
}
//PostCreatedObjectAccessViaSymbolGlobal
for (var k = 0; k < objMaxProps; k++) {
objPostSymbG[postSymbG[k]]=objPostSymbG[postSymbG[k]];
}
//PostCreatedObjectAccessViaSymbolLocal
for (var k = 0; k < objMaxProps; k++) {
objPostSymbL[postSymbL[k]]=objPostSymbL[postSymbL[k]];
}
//InLineObjectPropertyName
var tmp = objPreProps.abc;
objPreProps.abc = objPreProps.alongername;
objPreProps.alongername = objPreProps.anyname;
objPreProps.anyname = objPreProps.areallylongname;
objPreProps.areallylongname = objPreProps.small;
objPreProps.small = objPreProps.tmp;
//LineObjectPrePropertySymbolGlobal
objPreSymbG[gS0] = objPreSymbG[gS0];
objPreSymbG[gS1] = objPreSymbG[gS1];
objPreSymbG[gS2] = objPreSymbG[gS2];
objPreSymbG[gS3] = objPreSymbG[gS3];
objPreSymbG[gS4] = objPreSymbG[gS4];
//InLineObjectPostPropertySymbolGlobal
objPostSymbG[gS0] = objPostSymbG[gS0];
objPostSymbG[gS1] = objPostSymbG[gS1];
objPostSymbG[gS2] = objPostSymbG[gS2];
objPostSymbG[gS3] = objPostSymbG[gS3];
objPostSymbG[gS4] = objPostSymbG[gS4];
//LineObjectPrePropertySymbolLocal
objPreSymbG[lS0] = objPreSymbG[lS0];
objPreSymbG[lS0] = objPreSymbG[lS0];
objPreSymbG[lS0] = objPreSymbG[lS0];
objPreSymbG[lS0] = objPreSymbG[lS0];
objPreSymbG[lS0] = objPreSymbG[lS0];
//InLineObjectPostPropertySymbolLocal
objPostSymbG[lS0] = objPostSymbG[lS0];
objPostSymbG[lS0] = objPostSymbG[lS0];
objPostSymbG[lS0] = objPostSymbG[lS0];
objPostSymbG[lS0] = objPostSymbG[lS0];
objPostSymbG[lS0] = objPostSymbG[lS0];