<script language="JavaScript">
function check(){
var cl_year = document.form1.cl_year.value;
if(cl_year.match(/\d{4}/)&&cl_year>=1900&&cl_year<=2200){
return true;
}
else{
alert('ËùÊôÄê¶È²»ÕýÈ·!');
document.form1.cl_year.value="";
document.form1.cl_year.focus;
return false;
}
}
</script><form name="form1">
<input type="text" name="cl_year">
<input type="button" onclick="check()" value="¼ì²é">
</form>
function check(){
var cl_year = document.form1.cl_year.value;
if(cl_year.match(/\d{4}/)&&cl_year>=1900&&cl_year<=2200){
return true;
}
else{
alert('ËùÊôÄê¶È²»ÕýÈ·!');
document.form1.cl_year.value="";
document.form1.cl_year.focus;
return false;
}
}
</script><form name="form1">
<input type="text" name="cl_year">
<input type="button" onclick="check()" value="¼ì²é">
</form>
function check(){
var cl_year = document.form1.cl_year.value;
if(cl_year.match(/\d{4}/)&&cl_year>=1900&&cl_year<=2200){
return true;
}
else{
alert('所属年度不正确!');
document.form1.cl_year.value="";
document.form1.cl_year.focus;
return false;
}
}
</script><form name="form1">
<input type="text" name="cl_year">
<input type="button" onclick="check()" value="检查">
</form>
if(cl_year.search(/^(19|20|21)\d{2}$/)== -1 || cl_year="1900") alert("非法输入!");