form表单内的button标签问题_html/css_WEB-ITnose
<form> <input type="text" id='username'> <button type="button" id='save' onclick="save()">保存</button> </form> <script> function save(){ var name = document.getElementById('username').value; alert(name); if(name=='hello'){ history.go(-1); } else{ alert('输入错误 hello'); } } </script>
当button放在form表单里的时候,onclick事件就没有响应,不放在form表单里时,save()方法就得到调用了。
请问,这是什么情况呢?是自动提交了表单,而没有响应吗?
回复讨论(解决方案)
函数名称换个
<form> <input type="text" id='username'> <button type="button" id='save' onclick="save1()">保存</button> </form> <script> function save1(){ var name = document.getElementById('username').value; alert(name); if(name=='hello'){ history.go(-1); } else{ alert('输入错误 hello'); } } </script>
真的是啊
不能同名!
<form> <input type="text" id='username'> <button type="button" id='save' onclick="save()">保存</button> </form> <script> function save(){ var name = document.getElementById('username').value; alert(name); if(name=='hello'){ history.go(-1); } else{ alert('输入错误 hello'); } } </script>
当button放在form表单里的时候,onclick事件就没有响应,不放在form表单里时,save()方法就得到调用了。
请问,这是什么情况呢?是自动提交了表单,而没有响应吗?
可是我把button不放在form表单里,就有响应了,这又是为什么呢?
函数名称换个
<form> <input type="text" id='username'> <button type="button" id='save' onclick="save1()">保存</button> </form> <script> function save1(){ var name = document.getElementById('username').value; alert(name); if(name=='hello'){ history.go(-1); } else{ alert('输入错误 hello'); } } </script>
可是我把button不放在form表单里,就有响应了,这又是为什么呢?
在form里save被当成了 onclick="console.log(save);" 把save打印出来看下就知道了
在form里save被当成了 onclick="console.log(save);" 把save打印出来看下就知道了
试了下,确实如此,牛!

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