在提交prevent默认: - Angularjs [英] prevent default on submit :- Angularjs
问题描述
我要HTTP-POST到'/注册如果邮件是在填写表格为null prevent默认动作。
控制器code: -
$ scope.signUp =功能(){ 如果($ scope.email = NULL);
preventdefault;}
HTML(玉): -
形式(NAME =输入,行动=/注册的方法=邮报)
输入(类型=提交,值=提交)
当你有一个表单指定action属性,angularjs不会做preventDefault。
如果你删除它,并添加代替NG-提交:
<形式NAME =myForm会的方法=后NG提交=注册(myForm会)的novalidate>
<输入类型=电子邮件NAME =电子邮件NG模型=newSignup.email要求>
<按钮式=提交>登录UP< /按钮>
< /表及GT;
在这种情况下,表格将始终有preventDefault并提交您的$ scope.signUp()函数将被调用,您可以用AJAX后到后端/注册或进一步验证进行。
请注意,使用适当的验证您输入的属性(如TYPE =电子邮件和需要),angularjs将执行一些基本验证你。
你可以有一个额外的 NG-禁用=!myForm会。$有效的
上,而电子邮件是不正确输入提交按钮保持禁用按钮。
通过使用像在我的例子输入NG-型号,范围将得到一个 $ scope.newSignup
对象,你可以在你注册检查()函数进一步验证:
$ scope.signUp =功能(的HtmlForm){
如果($ scope.newSignup.email!=='some@email.com'){
返回false; //你应该表现出一些信息给用户
}
...
}
I want to prevent-default action of http-post to '/signUp' if e-mail is null upon filling form.
Controller Code:-
$scope.signUp = function() {
if($scope.email = null);
preventdefault;
}
html (jade) :-
form(name="input", action="/signUp", method="post")
input(type="submit", value="submit")
When you have the action attribute specified for the form, angularjs will not do preventDefault. If you remove it and add ng-submit instead:
<form name="myForm" method="post" ng-submit="signUp(myForm)" novalidate>
<input type="email" name="email" ng-model="newSignup.email" required>
<button type="submit">sign up</button>
</form>
In this case the form will always have preventDefault and on submit your $scope.signUp() function will be called where you can proceed with an ajax post to the backend /signup or further validation.
Note that by using proper validation attributes on your inputs (like type="email" and required), angularjs will perform some basic validation for you.
You can have an extra ng-disabled="!myForm.$valid"
on the submit button to keep the button disabled while the email is not correctly entered.
By using ng-model on the inputs like in my example, your scope will get a $scope.newSignup
object which you can check in your signUp() function for further validation:
$scope.signUp = function(htmlForm) {
if ($scope.newSignup.email !== 'some@email.com') {
return false; // you should really show some info to the user
}
...
}
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