How to use 'strict' mode in Chrome 'JavaScript Console'

I am practicing JavaScript on Chrome's 'JavaScript Console' ( version: 35.0) and I am unable to use the 'use strict' clause as expected. For the following code snippet : var obj={x:1,y:2} //Define new property with 'writable' flag as false. Object.defineProperty(obj, "z", {value:3, writable:false, enumerable:false, configurable:false}) // Try to change the property 'z', "use strict"; obj["z"]=4 Ou

[ledsun]

chromeのコンソールでstrictモードを使うには、IIFEが必要