​x
 
<!DOCTYPE html>
<html>
<body>
​
<p>单击按钮来对字符串中的空白字符进行全局搜索。</p>
​
<button onclick="myFunction()">试一试</button>
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<p id="demo"></p>
​
<script>
function myFunction() {
  var str = "Is this all there is?";
  var patt1 = /\s/g;
  var result = str.match(patt1);
  document.getElementById("demo").innerHTML = result;
}
</script>
​
</body>
</html>
​