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mx3y
9年前发布

js正则表达式验证各类需求（整数，实数，小数，时间，URL等）

    function validateNum(val){//验证整数        var patten = /^-?\d+$/;        return patten.test(val);         }        function validateRealNum(val){//验证实数                 var patten = /^-?\d+\.?\d*$/;                 return patten.test(val);                  }                function validateNum(val){//验证小数，保留一位小数点                 var patten = /^-?\d+\.?\d{0,1}$/;                 return patten.test(val);                  }                          function validateFloat(val){//验证小数        var patten = /^-?(?:\d+|\d{1,3}(?:,\d{3})+)(?:\.\d+)?$/;        return patten.test(val);         }                  function validateNumOrLetter(val){//只能输入数字和字母                var patten = /^[A-Za-z0-9]+$/;                return patten.test(val);         }                  function validateColor(val){//验证颜色        var patten =  /^#[0-9a-fA-F]{6}$/;        return patten.test(val);         }                  function validateUrl(val){ //验证URL        var patten = /^(https?|ftp):\/\/(((([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\*\+,;=]|:)*@)?(((\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5])\.(\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5])\.(\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5])\.(\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5]))|((([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.)+(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.?)(:\d*)?)(\/((([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\*\+,;=]|:|@)+(\/(([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\*\+,;=]|:|@)*)*)?)?(\?((([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\*\+,;=]|:|@)|[\uE000-\uF8FF]|\/|\?)*)?(\#((([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\*\+,;=]|:|@)|\/|\?)*)?$/i;        return patten.test(val);         }                  function validateNull(val){//验证空        return val.replace(/\s+/g, "").length==0;         }                  function validateDate(val){//验证时间2010-10-10        var patten = /^\d{4}[\/-]\d{1,2}[\/-]\d{1,2}$/;        return patten.test(val);         }                  function validateNumLetterLine(val){//只能输入数字、字母、下划线            var patten =  /^[a-zA-Z0-9_]{1,}$/;        return patten.test(val);         }