Introduction on Object Preventextensions Javascript Functions Es6 Ecma2015 Javascript 2019 Js Object Preventextensions Javascript Functions Es6 Ecma2015 Javascript 2019 Js 's database profile? We've gathered the latest integration metrics, platform footprints, and exclusive insights for Object Preventextensions Javascript Functions Es6 Ecma2015 Javascript 2019 Js . Access the complete Verified Registry and digital record.
Important Facts Object Preventextensions Javascript Functions Es6 Ecma2015 Javascript 2019 Js .
Developments Object Preventextensions Javascript Functions Es6 Ecma2015 Javascript 2019 Js 's latest milestones.
Object.freeze()-JavaScript Functions-ES6/ECMA2015/JavaScript 2019/JS
Object.defineProperties()-JavaScript Functions-ES6/ECMA2015/JavaScript 2019/JS
Object.seal()-JavaScript Functions-ES6/ECMA2015/JavaScript 2019/JS
Object.getPrototypeOf()-JavaScript Functions-ES6/ECMA2015/JavaScript 2019/JS
Object.isSealed()-JavaScript Functions-ES6/ECMA2015/JavaScript 2019/JS
Object.getOwnPropertySymbols()-JavaScript Functions-ES6/ECMA2015/JavaScript 2019/JS
Object.isFrozen()-JavaScript Functions-ES6/ECMA2015/JavaScript 2019/JS
handler.getPrototypeOf()-JavaScript Functions-ES6/ECMA2015/JavaScript 2019/JS
Object.prototype.isPrototypeOf()-JavaScript Functions-ES6/ECMA2015/JavaScript 2019/JS
Reflect.isExtensible()-JavaScript Functions-ES6/ECMA2015/JavaScript 2019/JS
15.9 Object preventExtensions in Javascript
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Last Updated: August 11, 2026
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