我有一个学校项目,网址是http://angelaalarconcreative.com/LB_v3/ 我希望能够保存用户的食物选择,以便当你点击自动保存它时将您引导至不同的HTML页面,在此页面中将食物选择及其合并的营养成分汇总在一起。我的老师给了我这个代码作为一个“提示”,但我觉得比以前更茫然地盯着她的代码。任何人都可以帮助我吗? :)如何使用JavaScript localStorage来保存用户选择和显示在不同的HTML页面
$(function() {
$("#save-meal").click(function(){
var authenticated = localStorage.getItem("Greetings");
alert(authenticated);
if(authenticated == null) {
//alert saying you need to login to use this feature
alert("You need to login to use this feature!");
}
else {
var openDiv = "<div> Welcome " + document.write(localStorage.getItem("Welcome"));
var calories = " <div> Calories : " + document.write(localStorage.getItem("calories"));
var totalFat = " <div> Total Fat : " + document.write(localStorage.getItem("totalFat"));
var cholesterol = " <div> Cholesterol : " + document.write(localStorage.getItem("cholesterol"));
var sodium = " <div> Sodium : " + document.write(localStorage.getItem("sodium"));
var dietaryFiber = " <div> Dietary Fiber : " + document.write(localStorage.getItem("dietaryFiber"));
var sugar = " <div> Sugar : " + document.write(localStorage.getItem("sugar"));
var protein = " <div> Protein : " + document.write(localStorage.getItem("protein"));
var closeDiv = "</div>"
}
});
});
我想知道如何使用localStorage获取用户的随机选择并在不同的页面中检索它。考虑到我的项目的交互性,什么是适当的语法?
更新:我根据你的答案改变了一点JS,但它仍然不起作用!我怀疑错误的语法。有人能帮我吗?我感觉我好像接近了!
$(document).ready(function() {
$("#save-meal").click(function(){
var calories = $('.nf__table #value--calories').text();
var totalfat = $('.nf__table #value--total-fat').text();
var cholesterol = $('.nf__table #value--cholesterol').text();
var sodium = $('.nf__table #value--sodium').text();
var fiber = $('.nf__table #value--dietary-fiber').text();
var sugar = $('.nf__table #value--sugar').text();
var protein = $('.nf__table #value--protein').text();
localStorage.setItem('value--calories', calories);
localStorage.setItem('value--total-fat', totalfat);
localStorage.setItem('value--cholesterol', cholesterol);
localStorage.setItem('value--sodium', sodium);
localStorage.setItem('value--fiber', fiber);
localStorage.setItem('value--sugar', sugar);
localStorage.setItem('value--protein', protein);
});
$("#gotosave").click(function(){
document.write(localStorage.getItem('value--calories'));
document.write(localStorage.getItem('value--total-fat'));
document.write(localStorage.getItem('value--cholesterol'));
document.write(localStorage.getItem('value--sodium'));
document.write(localStorage.getItem('value--fiber'));
document.write(localStorage.getItem('value--sugar'));
document.write(localStorage.getItem('value--protein'));
});
});
//document.getElementById("#saved-items").innerHTML = calories;
您是否需要使用localStorage?您可以轻松地传递网址中的数据。如果你想使用localStorage,你需要设置你想要保存的数据,当你点击保存,然后重定向,然后在新页面中检索数据,如 – juvian