jQuery: 如果条件为假,但仍然执行?
jQuery: if condition is false, but still executed?
代码如下
$(document).ready(function(){
sessionStorage.test = false;
alert( sessionStorage.test );
if ( sessionStorage.test ) {
alert("I dont care about your conditions!");
}
});
生成以下弹出窗口:
false
I dont care about your conditions!
即使 sessionStorage.test
明确设置为 false。为什么会这样?根据这个答案 ,这应该可行。我究竟做错了什么?我正在使用 XAMPP - sessionStorage 是否有问题?这是我的测试文件的完整代码:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Test</title>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
<script >
$(document).ready(function(){
sessionStorage.test = false;
if ( sessionStorage.test ) {
alert("I dont care about your conditions!");
}
});
</script>
</head>
<body>
<!-- page content -->
</body>
</html>
会话存储的默认 getter/setter 是:
sessionStorage.setItem('keyName', 'value');
sessionStorage.getItem('keyName')
因此,例如:
sessionStorage.setItem('test',false);
if (sessionStorage.getItem('test') != "false") {
..........
}
重复主题:
- sessionStorage setItem returns true or false
- sessionStorage isn't working as expected
代码如下
$(document).ready(function(){
sessionStorage.test = false;
alert( sessionStorage.test );
if ( sessionStorage.test ) {
alert("I dont care about your conditions!");
}
});
生成以下弹出窗口:
false
I dont care about your conditions!
即使 sessionStorage.test
明确设置为 false。为什么会这样?根据这个答案 ,这应该可行。我究竟做错了什么?我正在使用 XAMPP - sessionStorage 是否有问题?这是我的测试文件的完整代码:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Test</title>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
<script >
$(document).ready(function(){
sessionStorage.test = false;
if ( sessionStorage.test ) {
alert("I dont care about your conditions!");
}
});
</script>
</head>
<body>
<!-- page content -->
</body>
</html>
会话存储的默认 getter/setter 是:
sessionStorage.setItem('keyName', 'value');
sessionStorage.getItem('keyName')
因此,例如:
sessionStorage.setItem('test',false);
if (sessionStorage.getItem('test') != "false") {
..........
}
重复主题:
- sessionStorage setItem returns true or false
- sessionStorage isn't working as expected