我想知道是否可以使用循环来简化所有这些,而不是对整个结构进行硬编码。对于我的 Javascript 的第二部分,我尝试使用 for 循环将用户输入存储到 localStorage 中,但出现错误
CreateEvent.js:72 Uncaught TypeError: name.push is not a function at createReplace (CreateEvent.js:72) at HTMLButtonElement.onclick (CreateEvent.html:130)
HTML:
<span class="border1">
<input class="forms" type="text" id="title" placeholder="Enter Title!">
<p id="title1"></p>
<input class="forms" type="text" id="brief" placeholder="Enter brief description!">
<p id="brief1"></p>
</span>
<div class="Hovertrees">
<p>Hover over me!</p>
<span class="Hovertrees2">
<input class="hover" type="text" id="hover" placeholder="Enter some fun facts!">
<p id="hover1"></p>
</span>
</div>
<div id="what">
<input class="forms" type="text" id="whattitle" placeholder="What is this event?">
<h2 id="whattitle1"></h2>
<input class="forms" type="text" id="whatdesc" placeholder="Enter brief description!">
<p id="whatdesc1"></p>
</div>
<div id="why">
<input class="forms" type="text" id="whytitle" placeholder="Why is this event important?">
<h2 id="whytitle1"></h2>
<input class="forms" type="text" id="whydesc" placeholder="Description of this event">
<p id="whydesc1"></p>
</div>
<div id="fun">
<input class="forms" type="text" id="funtitle" placeholder="Anything interesting you can add!">
<h3 id="funtitle1"></h3>
<input class="forms" type="text" id="fundesc" placeholder="Description of the interesting info!">
<p id="fundesc1"></p>
</div>
Javascript:
var title;
var brief;
var hover;
var whatTitle;
var whatDesc;
var whyTitle;
var whyDesc;
var funTitle;
var funDesc;
function createReplace() {
title = document.getElementById('title').value;
document.getElementById('title1').innerHTML = title;
document.getElementById('title').className = 'hidden';
document.getElementById('news').innerHTML = title;
brief = document.getElementById('brief').value;
document.getElementById('brief1').innerHTML = brief;
document.getElementById('brief').className = 'hidden';
hover = document.getElementById('hover').value;
document.getElementById('hover1').innerHTML = hover;
document.getElementById('hover').className = 'hidden';
whatTitle = document.getElementById('whattitle').value;
document.getElementById('whattitle1').innerHTML = whatTitle;
document.getElementById('whattitle').className = 'hidden';
whatDesc = document.getElementById('whatdesc').value;
document.getElementById('whatdesc1').innerHTML = whatDesc;
document.getElementById('whatdesc').className = 'hidden';
whyTitle = document.getElementById('whytitle').value;
document.getElementById('whytitle1').innerHTML = whyTitle;
document.getElementById('whytitle').className = 'hidden';
whyDesc = document.getElementById('whydesc').value;
document.getElementById('whydesc1').innerHTML = whyDesc;
document.getElementById('whydesc').className = 'hidden';
funTitle = document.getElementById('funtitle').value;
document.getElementById('funtitle1').innerHTML = funTitle;
document.getElementById('funtitle').className = 'hidden';
funDesc = document.getElementById('fundesc').value;
document.getElementById('fundesc1').innerHTML = funDesc;
document.getElementById('fundesc').className = 'hidden';
document.getElementById("create").className = "hidden";
var varNames = [
'titles',
'brief',
'hover',
'whatTitle',
'whatDesc',
'whyTitle',
'funtitle',
'fundesc'
]
for (var name in varNames) {
var value = window[name]
var obj = {name : value};
if(localStorage.getItem(name) != null) {
var tmp = JSON.parse(localStorage.getItem(name));
for(var i = 0;i<tmp.length;i++) {
name.push(tmp[i]);
}
}
name.push(obj);
localStorage.setItem(name, JSON.stringify(value));
}
}
最佳答案
对于第一部分,简化是不可能的,因为每个元素都有不同的属性。
对于第二部分,你会得到错误,因为 push 是数组对象的方法。但是 name 是在 for 循环中声明的字符串对象
for (var name in varNames) {
var value = window[name]
var obj = {name : value};
if(localStorage.getItem(name) != null) {
var tmp = JSON.parse(localStorage.getItem(name));
for(var i = 0;i<tmp.length;i++) {
name.push(tmp[i]);
}
}
name.push(obj);
localStorage.setItem(name, JSON.stringify(value));
}
}
关于javascript - 使用 localStorage 简化代码,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/51666750/