[英]How to generate one object key with an array of stored values from multiple on click events using localstorage and Jquery
我是编码新手,我需要使用 localstorage 从输入字段显示过去的搜索值。 我能想到的唯一方法是使用一个对象键和来自点击事件的存储值数组。 问题是,我只能让一个位置显示为一个值,生成的每个值替换最后一个。 我试过 for 循环,但似乎无法让它工作。 这是我到目前为止的代码:
$('.search-city').on('click', function(e){
e.preventDefault();
var textArr = [];
var text = $(".form-control").val();
textArr.push(text);
localStorage.setItem("value1", textArr);
});
$('.search-city').on('click', function(e){
e.preventDefault();
var search = localStorage.getItem("value1")
这会起作用:
$('.search-city').on('click', function(e){
e.preventDefault();
// get the value from local storage
var localValue = localStorage.getItem('value1');
// if we had a value, parse it back to an array, if we dont, create an empty array
var textArr = localValue ? JSON.parse(localValue) : [];
// get the text from the search input, dont use "form-control"
// you're likely to have several of those on the page
// give the element a custom class like "search-input" and use that (id would be even better)
var text = $('.search-input').val();
// add the text to the array
text = trim(text);
if (text) {
textArr.push(text);
}
// enforce a size limit here by removing the 0 index item if the count has grown too large
var maxAllowed = 10;
while (textArr.length > maxAllowed) {
textArr.shift();
}
// localstorage can only hold simple strings so we'll JSON stringify our object and store that
localValue = JSON.stringify(textArr);
localStorage.setItem("value1", localValue);
});
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