我是 Javascript 的新手,我想显示一个简单的
colour_list
作为下拉菜单并返回选定的颜色响应。
我尝试了以下代码片段,但它说未捕获类型错误:$.fn.get_entity 不是函数
from flask import Flask, render_template
app = Flask(__name__)
@app.route('/get_entity', methods=['GET'])
def get_entity():
try:
colour_list = ['Red', 'Blue', 'Orange', 'Yellow', 'Green']
entity_wrap = {"entity_options":colour_list}
except Exception as e:
print('Exception caught while getting entity list: ',str(e))
return entity_wrap
def main():
return render_template('index.html')
if __name__ == "__main__":
app.run()
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Report Generation</title>
<script src="../static/scripts/jquery-2.1.1.min.js" type="text/javascript"></script>
<script src="../static/scripts/select2.js"></script>
<script>
$(document).ready(function(){
$("#entity_selection").select2();
$.fn.get_enitity = function() {
var sub_entity = null;
$.ajax({
url: '/get_entity',
dataType: 'json',
type: 'post',
contentType: 'application/json',
data: JSON.stringify( { "sub_entity": sub_entity } ),
processData: false,
success: function( data, textStatus, jQxhr ){
$("#entity_selection").empty();
for (const x of data['entity_options']) {
var option = $('<option></option>').attr("value", x).text(x);
$("#entity_selection").append(option);
}
},
error: function( jqXhr, textStatus, errorThrown ){
console.log( errorThrown );
}
});
}
$.fn.get_entity();
});
</script>
</head>
<body>
<section class="form">
<div class="Entity">
<p class="Text"> Entity: </p>
<SELECT id="entity_selection"></SELECT><br/>
</div>
<div class="Submit">
<button id="submit_button">SUBMIT</button><br/>
</div>
</section>
</body>
</html>