onsubmit="return false" 是什么意思？（JavaScript，jQuery）
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What is the meaning of onsubmit="return false"? (JavaScript, jQuery)
提问by Sasa1234
I know that the onsubmit event occurs when a form is submitted.
我知道提交表单时会发生 onsubmit 事件。
Generally what we do is, we are calling a method on onsubmit event like <form action="" onsubmit="myfunction()">
通常我们所做的是，我们在 onsubmit 事件上调用一个方法，例如 <form action="" onsubmit="myfunction()">
Today I saw this, "<form action="" onsubmit="return false">". How it works? I could not understand what is the meaning of onsubmit="return false".
今天看到这个，"<form action="" onsubmit="return false">"。这个怎么运作？我不明白是什么意思 onsubmit="return false"。
PS : I found this when I learning Ajax. It was a tutorial which explains how to submit data to database without refresh the page.
PS：我在学习 Ajax 时发现了这个。这是一个教程，解释了如何在不刷新页面的情况下将数据提交到数据库。
回答by Amar Singh
This basically done to handle the form submission via JavaScript.
这基本上是为了通过 JavaScript 处理表单提交。
For example- for validation purposeSee below code and see how it can be beneficial:
例如-用于验证目的请参阅下面的代码，看看它是如何有益的：
<script language="JavaScript">
myFunctionName() {
if (document.myForm.myText.value == '')
return false;
//when it return false - your form will not submit and will not redirect too
else
return true;
//when it return true- your form will submit and will redirect
// (actually its a part of submit) id you have mentioned in action
}
</script>
<form name="myForm" onSubmit="return myFunctionName()">
<input type="text" name="myText">
<input type="submit" value="Click Me">
</form>
回答by Vikas
If you are using button instead of submit as in my case below.
如果您使用按钮而不是提交，就像我下面的情况一样。
<form name="myForm" onSubmit="myFunctionName(); return false">
<input type="text" name="myText">
<input type="button" value="Click Me" onclick="myFunctionName()">
</from>
