Question

我试图将一段javascript funconality加载到我的index.html中然而，当我装入烧瓶时，它似乎不起作用。我不是JS专家，但是我假设它有JS故障，因为我已经确定了正确目录中的所有内容正确加载。请看看我做错了什么。

base.html文件

<!doctype html>
<html>
<head>
  <title>Flask-Mobility example</title>
</head>
<body>
  {% block content %}
  {% endblock %}
</body>
</html>
app\static\index.js

的index.html

{% extends 'base.html' %}


{% block content %}
    <script type="text/javascript" src="{{ url_for('static', filename='index.js') }}"></script>

    <link rel= "stylesheet" type= "text/css" href= "{{ url_for('static',filename='styles/index.css') }}">

    <!-- multistep form -->
    <form id="msform">
      <!-- progressbar -->
      <ul id="progressbar">
        <li class="active">Account Setup</li>
        <li>Social Profiles</li>
        <li>Personal Details</li>
      </ul>
      <!-- fieldsets -->
      <fieldset>
        <h2 class="fs-title">Create your account</h2>
        <h3 class="fs-subtitle">This is step 1</h3>
        <input type="text" name="email" placeholder="Email" />
        <input type="password" name="pass" placeholder="Password" />
        <input type="password" name="cpass" placeholder="Confirm Password" />
        <input type="button" name="next" class="next action-button" value="Next" />
      </fieldset>
      <fieldset>
        <h2 class="fs-title">Social Profiles</h2>
        <h3 class="fs-subtitle">Your presence on the social network</h3>
        <input type="text" name="twitter" placeholder="Twitter" />
        <input type="text" name="facebook" placeholder="Facebook" />
        <input type="text" name="gplus" placeholder="Google Plus" />
        <input type="button" name="previous" class="previous action-button" value="Previous" />
        <input type="button" name="next" class="next action-button" value="Next" />
      </fieldset>
      <fieldset>
        <h2 class="fs-title">Personal Details</h2>
        <h3 class="fs-subtitle">We will never sell it</h3>
        <input type="text" name="fname" placeholder="First Name" />
        <input type="text" name="lname" placeholder="Last Name" />
        <input type="text" name="phone" placeholder="Phone" />
        <textarea name="address" placeholder="Address"></textarea>
        <input type="button" name="previous" class="previous action-button" value="Previous" />
        <input type="submit" name="submit" class="submit action-button" value="Submit" />
      </fieldset>
    </form>

{% endblock %}

index.js

//jQuery time
var current_fs, next_fs, previous_fs; //fieldsets
var left, opacity, scale; //fieldset properties which we will animate
var animating; //flag to prevent quick multi-click glitches

$(".next").click(function(){
    if(animating) return false;
    animating = true;

    current_fs = $(this).parent();
    next_fs = $(this).parent().next();

    //activate next step on progressbar using the index of next_fs
    $("#progressbar li").eq($("fieldset").index(next_fs)).addClass("active");

    //show the next fieldset
    next_fs.show(); 
    //hide the current fieldset with style
    current_fs.animate({opacity: 0}, {
        step: function(now, mx) {
            //as the opacity of current_fs reduces to 0 - stored in "now"
            //1. scale current_fs down to 80%
            scale = 1 - (1 - now) * 0.2;
            //2. bring next_fs from the right(50%)
            left = (now * 50)+"%";
            //3. increase opacity of next_fs to 1 as it moves in
            opacity = 1 - now;
            current_fs.css({
        'transform': 'scale('+scale+')',
        'position': 'absolute'
      });
            next_fs.css({'left': left, 'opacity': opacity});
        }, 
        duration: 800, 
        complete: function(){
            current_fs.hide();
            animating = false;
        }, 
        //this comes from the custom easing plugin
        easing: 'easeInOutBack'
    });
});

$(".previous").click(function(){
    if(animating) return false;
    animating = true;

    current_fs = $(this).parent();
    previous_fs = $(this).parent().prev();

    //de-activate current step on progressbar
    $("#progressbar li").eq($("fieldset").index(current_fs)).removeClass("active");

    //show the previous fieldset
    previous_fs.show(); 
    //hide the current fieldset with style
    current_fs.animate({opacity: 0}, {
        step: function(now, mx) {
            //as the opacity of current_fs reduces to 0 - stored in "now"
            //1. scale previous_fs from 80% to 100%
            scale = 0.8 + (1 - now) * 0.2;
            //2. take current_fs to the right(50%) - from 0%
            left = ((1-now) * 50)+"%";
            //3. increase opacity of previous_fs to 1 as it moves in
            opacity = 1 - now;
            current_fs.css({'left': left});
            previous_fs.css({'transform': 'scale('+scale+')', 'opacity': opacity});
        }, 
        duration: 800, 
        complete: function(){
            current_fs.hide();
            animating = false;
        }, 
        //this comes from the custom easing plugin
        easing: 'easeInOutBack'
    });
});

$(".submit").click(function(){
    return false;
})

Answer 1

将script标记移到底部。

如果写在顶部，则没有任何内容可供参考。例如，$(".next")实际上并未匹配任何内容，因为尚未创建具有该类的元素。

Answer 2

| FlaskApp
---- | FlaskApp
-------- | 模板
----------- html文件在此处
-------- | 静态
----------- css和javascript文件在这里

script type =“ text / javascript” src =“ {{url_for（' static '，filename =' javascript .js'）}}”

我的javascript无法在python-flask中加载

2 个答案: