如果我有一个像这样的localStorage对象:
jpxun
[{"id":"0","name":"juicy.stingy"}]
然后我可以通过以下任一路线将其删除:
localStorage.clear();
localStorage.removeItem('jpxun');
我有这段代码可以添加或删除localStorage项:
var lists = document.querySelectorAll('.list');
// if lists is not empty
if (lists.length) {
lists.forEach(list => {
list.addEventListener('click', e => {
if (!e.target.id) return;
var id = e.target.id;
var item = e.target;
var temp = jpxun_length++;
var newCt = "" + temp + ""; // need to wrap ID in speech marks to get delete element functionality to work
var findme = jpxun.findIndex(e => e.name == id);
// add word to localStorage
if (findme == -1) {
jpxun.push({ id: newCt, name: id });
item.className = 'fav';
var elem = document.getElementById('success');
elem.removeAttribute('disabled');
elem.removeAttribute('style');
// remove word from localStorage
} else {
jpxun.splice(findme, 1)
item.className = 'nofav';
// recount elements
var re_count = jpxun.length;
if (re_count == 0) {
// delete jpxun localStorage
localStorage.clear();
// if elements are empty, make the fav button inactive
document.getElementById('success').setAttribute("disabled" , true);
}
}
localStorage.setItem('jpxun', JSON.stringify(jpxun));
});
});
}
如果我从localStorage中删除了最后一个项目,则它看起来像这样:
jpxun
[]
在这种情况下,此行不会删除localStorage:
localStorage.clear();
我也尝试过删除localStorage:
localStorage.removeItem('jpxun');
如果我在浏览器控制台中输入代码,它们都可以使用,但是当在此处遇到该行时,从代码段中调用jpxun
来删除localStorage项时,它们都不会删除 if (re_count == 0) {
// delete jpxun localStorage
localStorage.clear();
// if elements are empty, make the fav button inactive
document.getElementById('success').setAttribute("disabled" , true);
}
:
data = np.random.rand(29,43)
那是为什么,我可以解决它吗?