只能输入数字:
代码1
<input onkeyup="this.value=this.value.replace(/\D/g,'')" onafterpaste="this.value=this.value.replace(/\D/g,'')">
代码2
<input name=txt1 onchange="if(/\D/.test(this.value)){alert('只能输入数字');this.value='';}">
代码3
......
只能输入数字:
代码1
<input onkeyup="this.value=this.value.replace(/\D/g,'')" onafterpaste="this.value=this.value.replace(/\D/g,'')">
代码2
<input name=txt1 onchange="if(/\D/.test(this.value)){alert('只能输入数字');this.value='';}">
代码3
......