## 輸入內容中有敏感詞過濾成* ``` <style> #res{ width: 200px; height: 200px; border:1px solid #ccc; } </style> <h2>敏感詞過濾</h2> <p> <textarea name="" id="area" cols="30" rows="10"></textarea> </p> <p> <input type="submit" value="發布" id="input"> </p> <p id="res"></p> <script> // 邏輯：用戶輸入的值，如果和正則匹配到了，則進行替換 // 敏感詞 使用* 替換 let area = document.getElementById('area'); let input = document.getElementById('input'); let res = document.getElementById('res'); let reg = /打醬油|劃水/g; input.onclick = function(){ let newVue = area.value.replace(reg,'*'); res.innerText = newVue; } </script> ``` 效果圖：