validatefloat.js

本系统完成了企业内部网信息管理系统的设计

    /*$RCSfile: validateFloat.js,v $ $Revision: 1.11 $ $Date: 2004/03/28 16:53:21 $ */
    /**
    * Check to see if fields are a valid float.
    * Fields are not checked if they are disabled.
    * <p>
    * @param form The form validation is taking place on.
    */
    function validateFloat(form) {
        var bValid = true;
        var focusField = null;
        var i = 0;
        var fields = new Array();
         var formName = form.getAttributeNode("name");

        oFloat = eval('new ' + formName.value + '_FloatValidations()');
        for (x in oFloat) {
        	var field = form[oFloat[x][0]];
        	
            if ((field.type == 'hidden' ||
                field.type == 'text' ||
                field.type == 'textarea' ||
                field.type == 'select-one' ||
                field.type == 'radio') &&
                field.disabled == false) {
        
            	var value = '';
                // get field's value
                if (field.type == "select-one") {
                    var si = field.selectedIndex;
                    if (si >= 0) {
                        value = field.options[si].value;
                    }
                } else {
                    value = field.value;
                }
        
                if (value.length > 0) {
                    // remove '.' before checking digits
                    var tempArray = value.split('.');
                    //Strip off leading '0'
                    var zeroIndex = 0;
                    var joinedString= tempArray.join('');
                    while (joinedString.charAt(zeroIndex) == '0') {
                        zeroIndex++;
                    }
                    var noZeroString = joinedString.substring(zeroIndex,joinedString.length);

                    if (!isAllDigits(noZeroString)) {
                        bValid = false;
                        if (i == 0) {
                            focusField = field;
                        }
                        fields[i++] = oFloat[x][1];

                    } else {
	                var iValue = parseFloat(value);
	                if (isNaN(iValue)) {
	                    if (i == 0) {
	                        focusField = field;
	                    }
	                    fields[i++] = oFloat[x][1];
	                    bValid = false;
	                }
                    }
                }
            }
        }
        if (fields.length > 0) {
           focusField.focus();
           alert(fields.join('\n'));
        }
        return bValid;
    }