Introduction on Object Preventextensions Javascript Functions Es6 Ecma2015 Javascript 2019 Js Object Preventextensions Javascript Functions Es6 Ecma2015 Javascript 2019 Js ? We've gathered comprehensive data, records, and insights about Object Preventextensions Javascript Functions Es6 Ecma2015 Javascript 2019 Js .
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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.getOwnPropertySymbols()-JavaScript Functions-ES6/ECMA2015/JavaScript 2019/JS
Object.isSealed()-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 21, 2026
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