


javascript - <input type="submit" onclick="submitAction();return false;"/>
<code><input type="submit" onclick="submitAction();return false;">和 <input type="submit" onclick="return submitAction()"> 有何区别?两者如何将表单提交给服务器的?望大神赐教</code>
回复内容:
<code><input type="submit" onclick="submitAction();return false;">和 <input type="submit" onclick="return submitAction()"> 有何区别?两者如何将表单提交给服务器的?望大神赐教</code>
前者显然是要使用ajax提交的,毕竟你已经直接禁用了浏览器默认行为,后者是不确定的,如果你在submit里面固定返回false就和前者一样了,如果你是验证成功返回true失败返回false就是使用浏览器默认的提交方式了。
前者在submitAction()处理。
后者submitAction()可能处理,也可能不处理,比如参数检查下,要是检查失败就处理,成功就返回true交给默认的表单处理。
<code>function submitAction(){ return false or true; } function checkForm(){ submitAction(); return false; }</code>
就是这样的差别
<code><input type="submit" onclick="return checkForm()"> <input type="submit" onclick="return submitAction()"></code>
前者是用submitAction();
提交表单,因为你的return false
组织了浏览器的默认行为,也就是表单不再直接提交数据,后者有点类似验证表单的意思,如果你的submitAction();
函数里面最终返回的结果为真或者为假,都不影响表单以默认的形式提交数据。
return false;是阻止了浏览器的默认的行为,那提交的话就是要用Ajax提交了

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