JavaScript 退出方法
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JavaScript exit method
提问by tommy
I have a JavaScript method that i want to validate a form
我有一个要验证表单的 JavaScript 方法
if the validation fails so
如果验证失败，那么
if (validationChecks ...... ){
return alert("message")
}
else{
//proceed
}
however no matter what i do in the if the form still seems to submit, any ideas?
但是无论我做什么，如果表单似乎仍然提交，有什么想法吗？
回答by valli
you should return false after checking validation.
检查验证后，您应该返回 false。
if (validationChecks ...... ){
alert("message")
return false; }
else{
//procced
}
回答by Mark Bell
You have spelt 'return' wrong. Also, returning an alert will not work, you'll need to return false explicitly to stop the form submitting.
你拼错了'return'。此外，返回警报将不起作用，您需要明确返回 false 以停止提交表单。
if (validationChecks ...... ){
alert("message");
return false;
}
else{
//procced
}
回答by dxh
Your validation must return falsewhen the form is not valid, and if you're calling your validationin onSubmit, then you must make sure that you include a returnstatement there as well:
false当表单无效时，您的验证必须返回，如果您正在调用您的 validationin onSubmit，那么您必须确保在那里也包含一个return语句：
<form onSubmit="return validationChecks();">
回答by Tim Ebenezer
You need to return false;in the case of failure
你需要 return false;在失败的情况下
