ASP中input表单验证

1. 长度限制以下为代码部分:<script>function test() {if(document.a.b.value.length>50){alert("不能超过50个字符！");document.a.b.focus();return false;}}</script><form name=a onsubmit="return test()"><textarea name="b" cols="40" wrap="VIRTUAL" rows="6"></textarea><input type="submit" name="Submit" value="check"></form>2. 只能是汉字 以下为代码部分:<input onkeyup="value=value.replace(/[^\u4E00-\u9FA5]/g,'')">3. 只能是英文以下为代码部分:<script language=javascript>function onlyEng(){if(!(event.keyCode>=65&&event.keyCode<=90))event.returnvalue=false;}</script><input onkeydown="onlyEng();">4. 只能是数字以下为代码部分:<script language=javascript>function onlyNum(){if(!((event.keyCode>=48&&event.keyCode<=57)||(event.keyCode>=96&&event.keyCode<=105)))//考虑小键盘上的数字键event.returnvalue=false;}</script><input onkeydown="onlyNum();">5. 只能是英文字符和数字以下为代码部分:<input onkeyup="value=value.replace(/[\W]/g,'') "onbeforepaste="clipboardData.setData('text',clipboardData.getData('text').replace(/[^\d]/g,''))">6. 验证邮箱格式以下为代码部分:<SCRIPT LANGUAGE=javascript RUNAT=Server>function isEmail(strEmail) {if (strEmail.search(/^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$/) != -1)return true;elsealert("oh");}</SCRIPT><input type=text onblur=isEmail(this.value)>7. 屏蔽关键字(这里屏蔽sex和****)以下为代码部分:<script language="javascript1.2">function test() {if((a.b.value.indexOf ("sex") == 0)||(a.b.value.indexOf ("****") == 0)){alert(":)");a.b.focus();return false;}}</script><form name=a onsubmit="return test()"><input type=text name=b><input type="submit" name="Submit" value="check"></form>8. 两次输入密码是否相同以下为代码部分:<FORM METHOD=POST ACTION=""><input type="password" id="input1"><input type="password" id="input2"><input type="button" value="test" onclick="check()"></FORM><script>function check(){ with(document.all){if(input1.value!=input2.value){alert("false")input1.value = "";input2.value = "";}else document.forms[0].submit();}}</script>