개발

[javascript] 자동 데이터 유효성체크

지승준 2015. 2. 24. 09:50
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<script type="text/javascript">
 
    /**
     * 데이터 유효성을 체크한다.
     *
     * @param   form
     */
 
    function validate(form) {
        var obj;
        var dispName;
        var dataType;
        var minValue;
        var maxValue;
        var minSize;
        var maxSize;
        var isValid;
        var value;
        for (i = 0; i < form.elements.length; i++) {
    
            obj = form.elements(i);
            
            if(obj.type != "grid") {
                
                if(obj.type == "") break;
                obj.value = trim(obj.value);
                dispName = obj.getAttribute("dispName");
                dataType = obj.getAttribute("dataType");
                minValue = obj.getAttribute("minValue");
                maxValue = obj.getAttribute("maxValue");
                minSize  = obj.getAttribute("minSize");
                maxSize  = obj.getAttribute("maxSize");
                len = obj.getAttribute("len");
                hLen = obj.getAttribute("hLen");
                value = obj.value;
        
                if (dispName == null) {
                    dispName = obj.name;
                }
                // 필수 입력 항목 체크
                if (obj.getAttribute("notNull") != null) {
 
                    isValid = false;
        
                    if (obj.type == "radio" || obj.type == "checkbox") {
                        if (form.elements(obj.name).length) {
                            for (j = 0; j < form.elements(obj.name).length; j++) {
                                if (form.elements(obj.name)[j].checked) {
                                    isValid = true;
                                    break;
                                }
                            }
                        } else {
                            if (obj.checked) {
                                isValid = true;
                            }
                        }
                    } else {
                        if (value != "") {
                            isValid = true;
                        } else {
                            if (obj.getAttribute("comma") != null) {
                                obj.value = 0;
                                isValid = true;
                            }
                        }
                    }
        
                    if (!isValid) {
                        alert(dispName + "을(를) 입력하십시오.");
                        obj.focus();
                        if (window.event) {
                            window.event.returnValue = false;
                        }
                        return  false;
                    }
                }
        
                // 데이터 길이 체크
                if (len != null) {
                    if (value.length != eval(len)) {
                        alert(dispName + "은(는) " + len + "자리를 입력해야 합니다.");
                        obj.focus();
                        obj.value = obj.value;
                        if (window.event) {
                            window.event.returnValue = false;
                        }
                        return  false;
                    }
                }
 
                // 데이터 최소길이, 최대길이 체크
                if (minSize != null) {
                    if (eval(minSize) > eval(value.length)) {
                        alert(dispName + " 입력값의 길이는 최소(" + minSize + ") 이상입니다.");
                        obj.focus();
                        obj.value = obj.value;
                        if (window.event) {
                            window.event.returnValue = false;
                        }
                        return  false;
                    }
                }
    
                if (maxSize != null) {
                    if (eval(maxSize) < eval(value.length)) {
                        alert(dispName + " 입력값의 길이가 최대(" + maxSize + ")을 초과합니다.");
                        obj.focus();
                        obj.value = obj.value;
                        if (window.event) {
                            window.event.returnValue = false;
                        }
                        return  false;
                    }
                }
                
        
                if (obj.type == "text") {
                    // 데이터 타입 체크
                    if (dataType == null) {
                        mLen = obj.maxLength;
                        if (hLen != null) mLen = hLen * 2;
                        if (obj.readOnly == false && jsByteLength(value) > mLen) {
                            alert(dispName + " 길이가 " + mLen + " 을(를) 넘습니다.");
                            obj.focus();
                            if (window.event) {
                                window.event.returnValue = false;
                            }
        
                            return  false;
                        }
                    } else if ((value != "") && (dataType != null)) {
                        isValid = true;
                        checkValue = false;
        
                        if (dataType == "date") {
                            value = deleteDateFormatStr(value);
                            isValid = isDate(value);
                            checkValue = true;
                        } else if (dataType == "email") {
                            isValid = isEmail(value);
                        } else if (dataType == "float") {
                            value = deleteCommaStr(value);
                            isValid = isFloat(value);
                            checkValue = true;
                        } else if (dataType == "integer") {
                            value = deleteCommaStr(value);
                            isValid = isInteger(value);
                            checkValue = true;
                        } else if (dataType == "number") {
                            value = deleteCommaStr(value);
                            isValid = isNumber(value);
                            checkValue = true;
                        } else if (dataType == "double") {
                            value = deleteCommaStr(value);
                            isValid = isNumber(value);
                            checkValue = true;
                        }
        
                        if (!isValid) {
                            alert(dispName + " 형식이 올바르지 않습니다.");
                            if (dataType == "float" || dataType == "integer" || dataType == "number" || dataType == "double") {
                                obj.value = "0";
                            }
                            obj.focus();
                            if (window.event) {
                                window.event.returnValue = false;
                            }
                            return  false;
                        }
 
                        if (checkValue) {
                            if (minValue != null) {
                                if (eval(minValue) > eval(value)) {
                                    alert(dispName + " 값은 최소값(" + minValue + ") 이상입니다.");
                                    obj.focus();
                                    if (window.event) {
                                        window.event.returnValue = false;
                                    }
                                    return  false;
                                }
                            }
        
                            if (isValid && (maxValue != null)) {
                                if (eval(maxValue) < eval(value)) {
                                    alert(dispName + " 값이 최대값(" + maxValue + ")을 초과합니다.");
                                    obj.focus();
                                    if (window.event) {
                                        window.event.returnValue = false;
                                    }
                                    return  false;
                                }
                            }
                        }
                    }
                }
            }
        }
    
        return  true;
    }
</script>
cs


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if(validate(form)){
    form.submit();
}
 
<form  name="form" onSubmit="return validate(this)">
<input type="text" size="12" name="test" maxLength="9" comma notNull dataType="email" value="100" >
cs


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/**
 * 문자열의 byte length를 얻는다.
 *
 * @param   str 문자열
 * @return  byte length
 */
function jsByteLength(str) {
    if (str == "") {
        return  0;
    }
 
    var len = 0;
 
    for (var i = 0; i < str.length; i++) {
        if (str.charCodeAt(i) > 128) {
            len++;
        }
        len++;
    }
 
    return  len;
}
cs


notnull 체크

comma 체크

dataType="email" 체크 

maxLength="9" 체크


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