​x
 
<!DOCTYPE html>
<html>
<body>
​
<h1>通过 JavaScript 改变 caret-color</h1>
​
<input id="input1" class="custom" value="Custom caret color">
​
<p>点击“试一试”按钮将 caret-color 属性设置为 “red”：</p>
​
<button onclick="myFunction()">试一试</button>
​
<script>
function myFunction() {
  document.getElementById("input1").style.caretColor = "red";
}
</script>
​
</body>
</html>
​