基本现场验证

本文介绍了基本现场验证的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

嗨ppl， 建议使用哪些字段验证来验证用户输入? 我知道问题很广泛...正在寻找开始清单.诸如sql注入，删除有趣的字符(不是人)之类的东西... 我了解基本检查，只是想知道是否有一个不错的清单可供您注意. 谢谢 Ash

Hi ppl, What are the recommended field validations for validating user input? I know the question is broad... Looking for a starting list. Things like, sql injection, removing funny characters (not people) etc... I understand the basic checks just want to know if there is a good list out there of things to watch out for. Thanks Ash

推荐答案

您可以向UI控件添加一些基本的验证方法. ValueMissing-如果必需元素为空，则返回true. TypeMismatch-此值适用于所有新的类型属性.例如，如果电子邮件值不正确，则此属性返回true. PatternMismatch-当元素包含pattern属性并且不符合正则表达式条件时，此属性将返回true. TooLong-当任何元素超过其maxlength属性时，此属性将返回true. Rangeflow-如果元素的min或max属性高于或低于指定值，则此属性将返回true. StepMismatch-当具有step属性的元素不符合所需的step值时，此属性返回true. 有效-如果上面列出的任何值返回true，则此属性返回false以指示该字段无效.否则，如果满足所有条件 You can add few basic validation methods to your UI control. ValueMissing - returns true if a required element is empty. TypeMismatch - This value applies to all the new type attributes. For example, if an email value is incorrect, this attribute returns true. PatternMismatch - When an element contains the pattern attribute and doesn’t conform to the regular expression conditions, this attribute will return true. TooLong - When any element surpasses its maxlength property this attribute will return true. Rangeflow - If an element’s min or max attributes are above or below the specified values, this attribute will return true. StepMismatch- When an element with the step attribute doesn’t conform to the required step value, this attribute returns true. Valid - If any of the values listed above return true, this attribute returns false to indicate the field is invalid. Otherwise, if all the conditions