Help us understand the problem. What is going on with this article?

HTMLページ内の@に反応するjavascript

無駄なコードだけど

無駄なコードだけど楽しいですね。

取り扱い説明書

情報処理教育の一環としてJSを習っている皆様、授業が暇だからと言って
くれぐれも他人に、このJSを埋め込まないでくださいね(´﹃`)。

atmark_tw.js
var text = document.body.innerText;
var m = text.match(/@[a-zA-Z|0-9|_]*[ | ]{0,1}/g);
if(m){
    m.forEach(element => {
        element = element.replace(" ","").replace(" ","");
        window.open("https://twitter.com/" + element.split("@")[1],"_blank");
        console.log(element.split("@")[1]);
    });
}
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