javascript - Regular expression. Find three words in the field -


help make correct regular expression search 3 words field. far have done so, think it's crazy.

var inp = document.getelementsbytagname('input')[0],      button = document.getelementsbytagname('button')[0];    button.onclick = function() {    console.log(inp.value.match(/^([а-яa-z0-9]+ ){2}[а-яa-z0-9]+/i));  };
<input type="text" />  <button>check</button>

i guess it's easier split text , verify element count expect it. may want trim text before avoid leading , trailing empty strings in result array.

console.log(inp.value.trim().split(/\s+/)) 

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