要求字符逐个判断,如全为数字时验证通过!
function CheckUserYearInfo()
{
var UserYearStr=document.forms[0].txtyear.value;//设值为2012
var year=new Array("0","1","2","3","4","5","6","7","8","9");
for(var i=0;i<UserYearStr.length;i++)
{
for(var j=0;j<year.length;j++)
{
if(UserYearStr.substring(i,i+1)==year[j])
{
alert("成功!");
}
}
}
}
\\课后练习题,写到这部分时脑袋锈死了,小弟不才,求各位大哥大姐指教!
function CheckUserYearInfo()
{
var UserYearStr=document.forms[0].txtyear.value;//设值为2012
var year=new Array("0","1","2","3","4","5","6","7","8","9");
for(var i=0;i<UserYearStr.length;i++)
{
for(var j=0;j<year.length;j++)
{
if(UserYearStr.substring(i,i+1)==year[j])
{
alert("成功!");
}
}
}
}
\\课后练习题,写到这部分时脑袋锈死了,小弟不才,求各位大哥大姐指教!
function CheckUserYearInfo()
{
var pass = true ; //记录是否通过
var UserYearStr = document.forms[0].txtyear.value; //设值为2012
var year=new Array("0","1","2","3","4","5","6","7","8","9");
outer : for(var i=0;i<UserYearStr.length;i++)
{
for(var j=0;j<year.length;j++)
{
if(UserYearStr.substring(i,i+1)==year[j])
{
continue outer ; //如果发现字符是属于0-9之间的 , 就表示该字符通过 ,跳过本次循环,进入下一个字符
}
}
pass = false ; //如果内循环完 ,都没有匹配 ,表示该字符不为数字 , 则将pass的值改为false
break outer; //终止循环
}
if(pass)
alert("通过");
else
alert("不通过");
}
//或则用正则表达式
function CheckUserYearInfo()
{
var UserYearStr = document.forms[0].txtyear.value; //设值为2012
if(/^\d+$/g.test(UserYearStr))
alert("通过");
else
alert("不通过");
}