JavaScript中几个常用的字符串验证

<script language="javascript">

var reIp = /^([01]?\d{1,2}|2[0-4]\d|25[0-5])(\.([01]?\d{1,2}|2[0-4]\d|25[0-5])){3}$/; //IP

var reEml = /^[\w\-\.]+@[a-z0-9]+(\-[a-z0-9]+)?(\.[a-z0-9]+(\-[a-z0-9]+)?)*\.[a-z]{2,4}$/i; //E-mail

var reTel = /^((\d{2,3}\-)?\d{2,5}\-)?[2-9]\d{6,7}(\-\d{2,5})?$/; //电话号

var reMbl = /^13[0135-9]\d{8}$/; //手机号

var reHttp = /^http\:\/\/[a-z0-9]+(\-[a-z0-9]+)?(\.[a-z0-9]+(\-[a-z0-9]+)?)*\.[a-z]{2,4}(\/?|\/.+)$/i; //Http地址

var reNum = /^\-?\d+(\.\d+)?$/; //数值

var reIdc = /^\d{15}(\d{2}[a-z0-9])?$/; //身份证

</script>

<table>

<tr>

<td align="right">IP:</td>

<td><input id="ipInput" /><input type="button" value="Check" onclick="alert(reIp.test(ipInput.value));" />（如：123.123.123.123）</td>

</tr>

<tr>

<td align="right">E-Mail:</td>

<td><input id="emailInput"><input type="button" value="Check" onclick="alert(reEml.test(emailInput.value));">（如：xxx@iecn.net</a></td>

</tr>

<tr>

<td align="right">电话:</td>

<td><input id="telInput" /><input type="button" value="Check" onclick="alert(reTel.test(telInput.value));" />（如：86-10-12345678-123）</td>

</tr>

<tr>

<td align="right">手机号:</td>

<td><input id="mblInput" /><input type="button" value="Check" onclick="alert(reMbl.test(mblInput.value));" />（如：13012345678）</td>

</tr>

<tr>

<td align="right">Http地址:</td>

<td><input id="httpInput" /><input type="button" value="Check" onclick="alert(reHttp.test(httpInput.value));" />（如：http://www.iecn.net）</td>

</tr>

<tr>

<td align="right">数值:</td>

<td><input id="numInput" /><input type="button" value="Check" onclick="alert(reNum.test(numInput.value));" />（如：123、123.4、-0.123）</td>

</tr>

<tr>

<td align="right">身份证:</td>

<td><input id="idcInput" /><input type="button" value="Check" onclick="alert(reIdc.test(idcInput.value));" />（如：123456197601018888）</td>

</tr>

</table>