Keep your hands toasty during a freezing winter

Good morning, when I want to run this code in a console, the browser blocks me. I'm not sure how to avoid this error.

var term = Date.now(); var term = term + 30000; // + 30 sec  while (1) {      var now = Date.now();      if(now > term) {          alert("Now");         break;      }  }

javascript

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