Check whether the user has entered or selected value;
Check whether input value is against a regular expression;
Check whether input value is between two fixed values;
List frequently-used regular expressions in setting pages.
SharePoint Form Validation supports a client-side validation for SharePoint list field data. SharePoint Form Validation provides 4 standard validation types for input content check when users create a SharePoint list item in New-Form or edit an item in Edit Form. They are Required Validation, Regular Expression Validation, Compare Validation, and Range Validation.
Administrator can configure above four validations and customize warning error messages for most columns in a list. Required Field Validator is used for setting whether some column should not be null. Regular Expression Validator is used to check whether inputted content is against a regular expression. Range Validator makes effect when it is required that some value of data should be in a range. Compare Validator pla ...
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