WebRoot/js/check.js

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function isNotEmpty(elem, msg) {
	var str = elem.value;
	if (str == null || str.length == 0) {
		alert(msg);
		elem.focus();
		return false;
	} else {
		return true;
	}
}
function checkUsernameFormat(elem) {
	var strValidChars = "0123456789_abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
	var strChar;
	var blnResult = true;
	var str = elem.value;
	str = str.toString();
	if(!isNotEmpty(elem,'用户名不得为空！'))
		return false;
	if (elem.value.length < 3 || elem.value.length > 16) {
		alert("用户名长度必须大于3,小于16！");
		elem.focus();
		return false;
	}
	for (i = 0; i < str.length && blnResult == true; i++) {
		strChar = str.charAt(i);
		if (strValidChars.indexOf(strChar) == -1) {
			blnResult = false;
		}
	}
	if (!blnResult) {
		alert('用户名格式不正确！');
		elem.focus();
	}
	return blnResult;
}
function isNumeric(elem, msg) {
	var strValidChars = "0123456789";
	var strChar;
	var Result = true;
	var str = elem.value;
	str = str.toString();
	if (str.length == 0) {
		Result = false;
	}
	for (i = 0; i < str.length && Result == true; i++) {
		strChar = str.charAt(i);
		if (strValidChars.indexOf(strChar) == -1) {
			Result = false;
		}
	}
	if (!Result) {
		alert(msg);
		elem.focus();
	}
	return Result;
}
function isEmail(elem) {
	if (elem.value.indexOf("@") != -1 && elem.value.indexOf(".") != -1) {
		return true;
	} else {