<form onsubmit="return check();"> <input type="text" name="username"> <input type="submit" value="提交"> </form> <script> function check() { alert("验证失败"); return false; } </script> //第二种 <form id="form_submit"> <input type="text" name="username"> <input type="submit" value="提交"> </form> </body> <script> var form_subm = document.getElementById("form_submit"); form_subm.onsubmit = function (event) { alert("验证失败"); return false; }
onsubmit事件创建的两种方式
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转载自www.cnblogs.com/TKOPython/p/12823997.html
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