怎么限制只能输入数字
时间: 2023-09-09 22:09:16 浏览: 49
可以使用以下代码段来限制输入框只能输入数字:
```html
<input type="text" oninput="this.value=this.value.replace(/[^\d]/g,'')">
```
这段代码使用oninput事件,通过正则表达式将非数字字符替换为空字符串,从而实现只能输入数字的限制。当用户在输入框中输入非数字字符时,它们将被立即删除。这种方法确保了输入框只能包含数字字符。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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