我刚刚开始使用javascript,这是为了测试。
我有基本的登录表单,用户名和密码,并添加一些Javascript到提取用户名和密码值,检查它们,如果它的真实应该重定向到另一个HTML页面。
在这种情况下,我使用window.location ..
以下是代码
UITextField *CatpickerField = [[UITextField alloc] initWithFrame:self.categoryView.bounds];
CatpickerField.backgroundColor = [UIColor clearColor];
[[CatpickerField valueForKey:@"textInputTraits"] setValue:[UIColor clearColor] forKey:@"insertionPointColor"];
CatpickerField .textAlignment = NSTextAlignmentRight;
CatpickerField.text= @"Category";
UIPickerView * pickerCAt = [UIPickerView new];
pickerCAt.backgroundColor = [UIColor whiteColor];
pickerCAt.tag=1001;
pickerCAt.delegate = self;
pickerCAt.dataSource = self;
pickerCAt.showsSelectionIndicator = NO;
UIToolbar *toolBarcat= [[UIToolbar alloc] initWithFrame:CGRectMake(0,0,320,44)];
[toolBar1 setBarStyle:UIBarStyleBlack];
UIBarButtonItem *buttonCancelcat=[[UIBarButtonItem alloc]initWithTitle:@"Cancel" style:UIBarButtonItemStylePlain target:self action:@selector(barButtonCancelAction:)];
UIBarButtonItem *buttonDonecat=[[UIBarButtonItem alloc]initWithTitle:@"Done" style:UIBarButtonItemStylePlain target:self action:@selector(barButtonAction:)];
UIBarButtonItem *flexiblecat = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil];
toolBarcat.items = [NSArray arrayWithObjects:buttonCancelcat,flexiblecat,buttonDonecat,nil];
CatpickerField.inputView = pickerCAt;
CatpickerField.inputAccessoryView = toolBar1;
self.CatPickerviewField = CatpickerField;
[self.categoryView addSubview:self.CatPickerviewField];

function Validate() {
username = document.login.korisnicko.value;
password = document.login.lozinka.value;
if (username == "" || password == "") {
window.alert ("Ne valja");
return false;
}
else if (password.length < 6) {
window.alert("mora biti duze od 6 slova");
return false;
}
else {
window.location = "profil.html";
return true;
}
}
&#13;
答案 0 :(得分:0)
这是一个工作小提琴: http://jsfiddle.net/uLbycrhm/1/
我不建议使用window.location
代替正确的location.href
,我也不建议使用window.alert
代替alert
({ {3}}),所以我也做了调整。此处使用return
也是不必要的,因为您的功能与onclick
相关联,而不是onsubmit
。
了解location
是一种对象非常重要,以下是供您参考的链接:what's the difference?。
答案 1 :(得分:0)
你可以用return关键字调用函数
<script>
function Validate() {
username = document.login.korisnicko.value;
password = document.login.lozinka.value;
if (username == "" || password == "") {
alert ("Ne valja");
return false;
}
else if (password.length < 6) {
alert("mora biti duze od 6 slova");
return false;
}
else {
window.location = "profil.html";
return false;
}
}
</script>
<form name = "login" method="REQUEST" action=>
<h1 id="greska"></h1>
<p id="greska2"></p>
<label>Korisnicko</label> <br>
<input type ="text" id="korisnicko" name="korisnicko"> <br>
<label>Lozinka</label> <br>
<input type ="password" id="lozinka" name="lozinka"> <br>
<button type = "submit" onclick="return Validate();">Submit</button>
</form>