我很难找到在前端和后端表达Pug(jade)来实现upvote / downvote功能的好方法。我当前的设置如下所示。我在mongo数据库中遍历项目以显示评分项目。
each val in post['listitem']
div.listitem
.rating_button
.buttons
button(class='up' aria-pressed="false") Upvote
p#vote 0 //currently 0 later data from db
button(class='down' ariapressed="false")Downvote
然后我对我的api进行了客户端ajax调用
$(document).ready(function(){
$(document).on('click', '.up', function(){
var up = $.post("/api/:id/upvote", {changeBy: 1}, function(dataBack){
$("#vote").text(dataBack);
});
});
$(document).on('click', '.down', function(){
var down = $.post("/api/:id/downvote", {changeBy: 1},
function(dataBack){
$("#vote").text(dataBack);
});
});
});
Api看起来像这样-首先是siteController
exports.upvote = async (req, res) => {
res.setHeader("Content-Type", "application/json");
vote += parseFloat(req.body.changeBy);
res.write(JSON.stringify(vote));
res.end();
console.log(vote);}
exports.downvote = async (req, res) => {
res.setHeader("Content-Type", "application/json");
vote -= parseFloat(req.body.changeBy);
res.write(JSON.stringify(vote));
res.end();
console.log(vote);}
第二个我的index.js
router.post('/api/:id/upvote', siteController.upvote);
router.post('/api/:id/downvote', siteController.downvote);
一切正常,但是使用此设置后,循环中的按钮无法正常工作。只有第一个按钮将数字增加/减少1。
如何解决循环中的按钮问题?还有改善当前设置的灵感/想法吗?
答案 0 :(得分:0)
您需要以某种方式将ID传递给onclick函数。一种方法是像这样设置clicking元素的ID:
each val in post['listitem']
div.listitem
.rating_button
.buttons
button(id= val.id class='up' aria-pressed="false") Upvote
p#vote 0 //currently 0 later data from db
button(id= val.id class='down' ariapressed="false")Downvote
然后通过在click函数中添加对元素的引用来捕获该信息:
$(document).on('click', '.up', function(element){
var id = element.target.id;
var up = $.post("/api/" + id + "/upvote", {changeBy: 1}, function(dataBack){
$("#vote").text(dataBack);
});
});