Sorry for my English. Can you help me please! I'm very newbie on coding. I want this code loads on every changes (status, tab,feed,etc) and can replace class element on my facebook pages

Code:
var words={"Masukkan Kembali":"Asupkeun deui","yang":"nu","":""};
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// prepareRegex by JoeSimmons
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String.prototype.prepareRegex
...