这是我第一次构建一个Web应用程序，我想从头开始学习基础知识。所以我有一个Python脚本，我想在终端上使用打印的数据表进行练习，并决定使用Flask，HTML，CSS，JS在网页上显示该表。我到目前为止工作了。
现在，我想通过单击表头来对该表进行排序。
这是我的代码的总体细分以及到目前为止我所做的事情：
Python脚本
from flask import Flask, render_template, request, url_for
app = Flask(__name__)
def get_table():
...
return dict //returns list of dictionaries, for example...
//dict = [{'name':'Joe','age':'25'},
// {'name':'Mike','age':'20'},
// {'name':'Chris','age':'29'}]
@app.route("/")
def home():
return render_template('home.html')
@app.route("/table", methods = ['POST','GET'])
def table():
if request.method == 'GET': //When button pressed on homepage
dict_table = get_table() //return list of dictionaries of names and ages
return render_template('table.html', dict_table=dict_table)
if __name__ == '__main__':
app.run(debug=True)
HTML文件table.html
<!DOCTYPE html>
<html>
<head>
<title>Display Table</title>
<script type="text/javascript" src="/scripts/app.js"></script>
</head>
<body>
<table id="table">
{% if dict_table %}
<tr>
{% for key in dict_table[0] %}
<th onclick="sortTable(1)" style="cursor:crosshair">{{ key }}</th>
{% endfor %}
</tr>
{% endif %}
{% for dict in dict_table %}
<tr>
{% for value in dict.values() %}
<td>{{ value }}</td>
{% endfor %}
</tr>
{% endfor %}
</table>
</body>
</html>
因此，该表在我的Web浏览器上正确显示。我在我的app.js脚本中使用了他们在W3学校网站上讲授的排序功能。
app.js
function sortTable(n) {
var table, rows, switching, i, x, y, shouldSwitch, dir, switchcount = 0;
table = document.getElementById("myTable");
switching = true;
//Set the sorting direction to ascending:
dir = "asc";
/*Make a loop that will continue until
no switching has been done:*/
while (switching) {
//start by saying: no switching is done:
switching = false;
rows = table.rows;
/*Loop through all table rows (except the
first, which contains table headers):*/
for (i = 1; i < (rows.length - 1); i++) {
//start by saying there should be no switching:
shouldSwitch = false;
/*Get the two elements you want to compare,
one from current row and one from the next:*/
x = rows[i].getElementsByTagName("TD")[n];
y = rows[i + 1].getElementsByTagName("TD")[n];
/*check if the two rows should switch place,
based on the direction, asc or desc:*/
if (dir == "asc") {
if (x.innerHTML.toLowerCase() > y.innerHTML.toLowerCase()) {
//if so, mark as a switch and break the loop:
shouldSwitch= true;
break;
}
} else if (dir == "desc") {
if (x.innerHTML.toLowerCase() < y.innerHTML.toLowerCase()) {
//if so, mark as a switch and break the loop:
shouldSwitch = true;
break;
}
}
}
if (shouldSwitch) {
/*If a switch has been marked, make the switch
and mark that a switch has been done:*/
rows[i].parentNode.insertBefore(rows[i + 1], rows[i]);
switching = true;
//Each time a switch is done, increase this count by 1:
switchcount ++;
} else {
/*If no switching has been done AND the direction is "asc",
set the direction to "desc" and run the while loop again.*/
if (switchcount == 0 && dir == "asc") {
dir = "desc";
switching = true;
}
}
}
}
这是我从https://www.w3schools.com/howto/howto_js_sort_table.asp得到的例子
到目前为止，这些是我的问题
如果有人可以引导我完成这个，我希望如此。我也很乐意听到有没有更好的方法让我这样做，只要它不是太复杂并且涉及安装外部应用程序，比如我已经看到类似问题的一些解决方案（因为我只是一个初学者，并试图学习）。谢谢！
qazxsw poi函数中的参数qazxsw poi是行的编号。当您渲染表格的标题时，您总是通过1.要修复它，您可以尝试
n这应该够了吧。
欲了解更多信息，请访问这个sortTable和完整的{% for key in dict_table[0] %}
<th onclick="sortTable({{ loop.index0 }})" style="cursor:crosshair">{{ key }}</th>
{% endfor %}
。
UPD还有一个jinja tricks page列表。