How mark all value=1 in type radio in browser (Google Chrome)

Question

I have special question maybe. I need mark all value="1" in browser (Google Chrome) without any plugins. Some way throught the address bar or developer tools, console.. so the some a command for the browser. I need it for school, mark extensive "radio" form.

Demonstration of how it looks shorter form in html code, that I need to mark all values with value=1.

<input name="test_warehouse" value="ans_1" type="hidden">Question 1<br>
<label><input id="ans_12" name="ans_1_w_r" value="2" type="radio">Answer 11 </label>
<br>
<label><input id="ans_13" name="ans_1_w_r" value="3" type="radio">Answer 12 </label>
<br>
<label><input id="ans_14" name="ans_1_w_r" value="4" type="radio">Answer 13 </label>
<br>
<label><input id="ans_11" name="ans_1_w_r" value="1" type="radio">Answer 13 </label>    
<input name="test_warehouse" value="ans_2" type="hidden">Question 2<br>
<label><input id="ans_23" name="ans_2_w_r" value="3" type="radio">Answer 21 </label>
<br>
<label><input id="ans_21" name="ans_2_w_r" value="1" type="radio">Answer 22 </label>
<br>
<label><input id="ans_22" name="ans_2_w_r" value="2" type="radio">Answer 23 </label>
<br>
<label><input id="ans_24" name="ans_2_w_r" value="4" type="radio">Answer 24 </label> 
<input name="test_warehouse" value="tst_3" type="hidden">Question 3<br>
<label><input id="ans_32" name="ans_3_w_r" value="2" type="radio">Answer 31 </label>
<br>
<label><input id="ans_33" name="ans_3_w_r" value="3" type="radio">Answer 32 </label>
<br>
<label><input id="ans_31" name="ans_3_w_r" value="1" type="radio">Answer 33 </label>
<br>
<label><input id="ans_34" name="ans_3_w_r" value="4" type="radio">Answer 34 </label>

or look on demo form here: http://dotin.cz/test/test_mark.html and try it mark all values with value=1

Thanks and sorry for my English maybe.

Answer 1

Array.prototype.forEach.call(document.querySelectorAll('input[value="1"]'), function(element) { element.checked = 'checked' });