<input onkeyup="if(isNaN(value))execCommand(‘undo‘)" onafterpaste="if(isNaN(value))execCommand(‘undo‘)"> <input name=txt1 onchange="if(/\D/.test(this.value)){alert(‘只能输入数字‘);this.value=‘‘;}">
时间: 2024-12-29 10:43:57
<input onkeyup="if(isNaN(value))execCommand(‘undo‘)" onafterpaste="if(isNaN(value))execCommand(‘undo‘)"> <input name=txt1 onchange="if(/\D/.test(this.value)){alert(‘只能输入数字‘);this.value=‘‘;}">