每天一个JavaScript实例-检測表单数据
！！ console.log(fields); if(fields.length > 0){ generateAlert("You have incorrect fields entries that must be fixed before you can submit this form"); return false; } } </script> </head> <body> <form id = "testform"> <div> <label for="firstfield">*first Field:</label><br /> <input id="firstfield" name = "firstfield" type = "text" aria-required = "true" /> </div> <div> <label for="secondfield">Second Field:</label><br /> <input id="secondfield" name = "secondfield" type = "text" /> </div> <div> <label for="thirdfield">Third Field(numeric):</label><br /> <input id="thirdfield" name = "thirdfield" type = "text" /> </div> <div> <label for="fourthfield">Fourth Field:</label><br /> <input id="fourthfield" name = "fourthfield" type = "text" /> </div> <input type="submit" value = "Send Data" /> </form> </body> </html>