我不知道如何删除cookie。我希望的是当提交表单时,cookie也能被删除。我尝试了delete_cookie("name")但它没有起作用。我认为这是因为我是用javascript
创建cookie。请检查我的代码以解决这个问题。
这是我的文本字段示例:
<input name="cargo_no" type="text" class="validate[required]" id="cargonumber" onchange="setCookie('cargonumberC', this.value, 365);"/>
这是 JavaScript 代码:
function setCookie(cookieName, cookieValue, nDays) {
var today = new Date();
var expire = new Date();
if (!nDays)
nDays=1;
expire.setTime(today.getTime() + 3600000*24*nDays);
document.cookie = cookieName+"="+escape(cookieValue) + ";expires="+expire.toGMTString();
}
function readCookie(name) {
var nameEQ = name + "=";
var ca = document.cookie.split(';');
for(var i = 0; i < ca.length; i++) {
var c = ca[i];
while (c.charAt(0) == ' ') c = c.substring(1, c.length);
if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length, c.length);
}
return null;
}
document.addEventListener('DOMContentLoaded', function() {
var themeSelect = document.getElementById('cargonumber');
var selectedTheme = readCookie('cargonumberC');
if (selectedTheme) {
themeSelect.value = selectedTheme;
}
});