问题仅在我试图逆转用户输入时存在，reverse()原样返回字符串，unshift()也是如此。
我要找的是如果用户输入input - 1234的output should be 4,3,2,1，但我得到的是output - 1,2,3,4。
const pahere = [];
const revephare = [];
let donereve = [];
let dff = document.getElementById("Udt1");
function tex(){
if(dff. value == "") {
console.log("enter text")
}
else {
pahere.push(dff.value);
console.log(dff.value);
console.log(pahere);
console.log(pahere.length);
for(let i = 0; i < pahere.length; i++){
revephare.push(pahere[i].split(""));
pahere.pop();
}
}
console.log("I should be splited",revephare);
donereve = revephare.reverse();
console.log("I should be reversed",donereve);
}* {
box-sizing: border-box;
}
body{
background: #333;
margin: 0;
}
h1{
margin: 15px;
color: white;
}
.holder{
margin-left: 12px;
width: 34em;
height: 37em;
border: 2px solid rgba(255, 51, 153,1);
display: flex;
}
#Udt1 {
width: 56%;
height: 2em!important;
text-align: center;
}
span {
color: white;
margin-top: 5px;
}
.anshold {
width: 154px;
height: 34px;
margin-left: 43em;
position: relative;
top: -592px !important;
border: 2px solid rgba(255, 51, 153,1);
text-align: center;
}
#udans{
color: white;
text-align: center;
margin: 0;
padding: 4px;
}
.btn {
width: 16%;
height: 2em!important;
text-align: center;
margin-left: 14px;
}<body>
<h1>Palidrom Checker</h1>
<div class="holder">
<span>Word goes here-</span>
<input type="text" name="textin" label ="textin" id="Udt1" placeholder="Eg-Racecar">
<button class="btn" onclick="tex()"> Check</button>
</div>
<div class="anshold"><p id="udans"> </p>
</div>
</body>尝试拆分数组pahere[i].split("")
const pahere = [];
const revephare = [];
let donereve = [];
let dff = document.getElementById("Udt1");
function tex(){
if(dff. value == "") {
console.log("enter text")
}
else {
pahere.push(dff.value);
console.log(dff.value);
console.log(pahere);
console.log(pahere.length);
for(let i = 0; i <dff.value.length; i++){
revephare.push(dff.value[i]);
pahere.pop();
}
}
console.log("I should be splited",revephare);
donereve = revephare.reverse();
console.log("I should be reversed",donereve);
}* {
box-sizing: border-box;
}
body{
background: #333;
margin: 0;
}
h1{
margin: 15px;
color: white;
}
.holder{
margin-left: 12px;
width: 34em;
height: 37em;
border: 2px solid rgba(255, 51, 153,1);
display: flex;
}
#Udt1 {
width: 56%;
height: 2em!important;
text-align: center;
}
span {
color: white;
margin-top: 5px;
}
.anshold {
width: 154px;
height: 34px;
margin-left: 43em;
position: relative;
top: -592px !important;
border: 2px solid rgba(255, 51, 153,1);
text-align: center;
}
#udans{
color: white;
text-align: center;
margin: 0;
padding: 4px;
}
.btn {
width: 16%;
height: 2em!important;
text-align: center;
margin-left: 14px;
}<body>
<h1>Palidrom Checker</h1>
<div class="holder">
<span>Word goes here-</span>
<input type="text" name="textin" label ="textin" id="Udt1" placeholder="Eg-Racecar">
<button class="btn" onclick="tex()"> Check</button>
</div>
<div class="anshold"><p id="udans"> </p>
</div>
</body>这是因为你错误地使用了array .prototype.push它会给你一个数组的数组作为结果
revephare.push(pahere[i].split("")); // this line is incorrect
将其替换为以下内容以使其正常工作
// use spread operator to pass each element as a separate argument
revephare.push(...pahere[i].split(""));
嗨，我知道你解决了这个问题，你可以通过这一行代码实现你的输出，只是尝试如果你可以
let reversed=(pahere.toString()).split("").map(Number).reverse();