尽管我根本没有碰过它,但为什么我的数组会颠倒过来?
我正在构建一个网站,并且有一个路由器,但是问题不是路由器,而是其中的计算,我正在制作一个数组 tomato
,在将我想要的内容放入其中后,所有值都是好的,但是在我渲染页面之前,数组的值显然会颠倒过来?我什至没有触及其他代码上的值,如下所示:
router.get('/reportsNested', function(req,res,next){
Question.find({
$expr: {
$gt: [
{
"$size": "$reportsNested"
},
0
]
}
}).sort({reportsNested: -1}).limit(20).exec(function(err,results){
let tomato = [];
for(let i =0; i< results.length; i++){
for(let j =0; j < results[i].reportsNested.length; j++){
tomato.push(results[i].reportsNested[j]);
}
}
console.log(tomato)
for(let i =0; i< results.length; i++){
let reserveranswers = results[i].answers
let answersArr = []
for(let j =0; j < results[i].answers.length; j++){
answersArr.push(results[i].answers[j])
}
answersArr = answersArr.sort((a,b) => (a.likes[0]-a.dislikes[0] < b.likes[0]-b.dislikes[0]) ? 1 : ((a.likes[0]-a.dislikes[0] > b.likes[0]-b.dislikes[0]) ? -1 : 0));
results[i].answers = answersArr;
let reserveranswersText = [];
for(let j =0; j < results[i].answers.length; j++){
reserveranswersText.push(results[i].answers[j].text)
}
for(let j =0; j<results[i].reportsNested.length; j++){
for(let h = 0; h<reserveranswers.length; h++){
results[i].reportsNested[j].answerIndex = reserveranswersText.indexOf(results[i].reportsNested[j].answerText);
}
}
}
console.log(tomato)
res.render('reports', {type: 'nested', user: req.user, reports: results, reporttoremove: tomato})
})
})
当我第一次在控制台记录番茄数组时,它输出:
[
{
username: 'SweetWhite',
answerIndex: 2,
answerText: `<h2 class="makewrap" style="flex-wrap: wrap; overflow-wrap: break-word; font-family: 'Times New Roman';">me an lemon lemonme an lemon lemonme an lemon lemonme an lemon lemonme an lemon lemonme an lemon lemonme an lemon lemon</h2>`
},
{
username: 'SweetWhite',
answerIndex: 0,
answerText: `<h2 class="makewrap" style="flex-wrap: wrap; overflow-wrap: break-word; font-family: 'Times New Roman';">do I become an amongusdo I become an amongusdo I become an amongusdo I become an amongus</h2>`
}
]
第二次输出番茄时,它输出这个! :
[
{
username: 'SweetWhite',
answerIndex: 0,
answerText: `<h2 class="makewrap" style="flex-wrap: wrap; overflow-wrap: break-word; font-family: 'Times New Roman';">me an lemon lemonme an lemon lemonme an lemon lemonme an lemon lemonme an lemon lemonme an lemon lemonme an lemon lemon</h2>`
},
{
username: 'SweetWhite',
answerIndex: 2,
answerText: `<h2 class="makewrap" style="flex-wrap: wrap; overflow-wrap: break-word; font-family: 'Times New Roman';">do I become an amongusdo I become an amongusdo I become an amongusdo I become an amongus</h2>`
}
]
我已经阅读这段代码几个小时了,我不明白为什么数组是相反的! 任何帮助将不胜感激!
I am building a website and I have a router, however the problem is not the router, but the calculations inside it, I am making an array tomato
and after putting what I want in it all the values are okay, however right before I render a page the values of the array apparently get reversed? I am not even touching the values on the other code, here it is:
router.get('/reportsNested', function(req,res,next){
Question.find({
$expr: {
$gt: [
{
"$size": "$reportsNested"
},
0
]
}
}).sort({reportsNested: -1}).limit(20).exec(function(err,results){
let tomato = [];
for(let i =0; i< results.length; i++){
for(let j =0; j < results[i].reportsNested.length; j++){
tomato.push(results[i].reportsNested[j]);
}
}
console.log(tomato)
for(let i =0; i< results.length; i++){
let reserveranswers = results[i].answers
let answersArr = []
for(let j =0; j < results[i].answers.length; j++){
answersArr.push(results[i].answers[j])
}
answersArr = answersArr.sort((a,b) => (a.likes[0]-a.dislikes[0] < b.likes[0]-b.dislikes[0]) ? 1 : ((a.likes[0]-a.dislikes[0] > b.likes[0]-b.dislikes[0]) ? -1 : 0));
results[i].answers = answersArr;
let reserveranswersText = [];
for(let j =0; j < results[i].answers.length; j++){
reserveranswersText.push(results[i].answers[j].text)
}
for(let j =0; j<results[i].reportsNested.length; j++){
for(let h = 0; h<reserveranswers.length; h++){
results[i].reportsNested[j].answerIndex = reserveranswersText.indexOf(results[i].reportsNested[j].answerText);
}
}
}
console.log(tomato)
res.render('reports', {type: 'nested', user: req.user, reports: results, reporttoremove: tomato})
})
})
when I am console logging tomato array for the first time it outputs:
[
{
username: 'SweetWhite',
answerIndex: 2,
answerText: `<h2 class="makewrap" style="flex-wrap: wrap; overflow-wrap: break-word; font-family: 'Times New Roman';">me an lemon lemonme an lemon lemonme an lemon lemonme an lemon lemonme an lemon lemonme an lemon lemonme an lemon lemon</h2>`
},
{
username: 'SweetWhite',
answerIndex: 0,
answerText: `<h2 class="makewrap" style="flex-wrap: wrap; overflow-wrap: break-word; font-family: 'Times New Roman';">do I become an amongusdo I become an amongusdo I become an amongusdo I become an amongus</h2>`
}
]
And for the second time it outputs tomato it outputs this! :
[
{
username: 'SweetWhite',
answerIndex: 0,
answerText: `<h2 class="makewrap" style="flex-wrap: wrap; overflow-wrap: break-word; font-family: 'Times New Roman';">me an lemon lemonme an lemon lemonme an lemon lemonme an lemon lemonme an lemon lemonme an lemon lemonme an lemon lemon</h2>`
},
{
username: 'SweetWhite',
answerIndex: 2,
answerText: `<h2 class="makewrap" style="flex-wrap: wrap; overflow-wrap: break-word; font-family: 'Times New Roman';">do I become an amongusdo I become an amongusdo I become an amongusdo I become an amongus</h2>`
}
]
I have been reading this code for hours and I don't understand why the array is reversed!
Any help would be very appreciated!
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番茄反转的原因是排序更新了引用。
尝试这样做。
我在我的机器上尝试过,它可以工作。
The reason for the tomato getting reversed is sort updating the reference.
Try doing this.
I tried in my machine and it works.