2.15. Vue3 form - CPEC Data Sharing Platform for Resources,Environment,Ecology and Disaster

In this section, we introduce the applications on Vue forms.
We can use v-model instructions in the form 、 </code> and <code class="docutils literal notranslate"> <select> </code> creates a two-way data binding on elements such as. <img alt="Image0" src="/media/sphinx_tuto/img/20151109171527_549.png"/> The <code class="docutils literal notranslate"> v-model </code> correct method is automatically selected to update the element based on the control type. <code class="docutils literal notranslate"> v-model </code> all form elements are ignored <code class="docutils literal notranslate"> value </code> 、 <code class="docutils literal notranslate"> checked </code> 、 <code class="docutils literal notranslate"> selected </code> property, using the <code class="docutils literal notranslate"> data </code> initial value is declared in the <code class="docutils literal notranslate"> v-model </code> internally use different attributes for different input elementsand throw different events: <ul class="simple"> <li> <code class="docutils literal notranslate"> text </code> and <code class="docutils literal notranslate"> textarea </code> element usage <code class="docutils literal notranslate"> value </code> properties and <code class="docutils literal notranslate"> input </code> event </li> <li> <code class="docutils literal notranslate"> checkbox </code> and <code class="docutils literal notranslate"> radio </code> use <code class="docutils literal notranslate"> checked </code> properties and <code class="docutils literal notranslate"> change </code> event </li> <li> <code class="docutils literal notranslate"> select </code> field will <code class="docutils literal notranslate"> value </code> as an attribute and set the <code class="docutils literal notranslate"> change </code> as an event. </li> </ul> <section id="id1"> <h2> 2.15.1. Input box <a class="headerlink" href="#id1" title="Link to this heading"> ¶ </a> </h2> The example demonstrates the <code class="docutils literal notranslate"> input </code> and <code class="docutils literal notranslate"> textarea </code> element used in the <code class="docutils literal notranslate"> v-model </code> implement two-way data binding: <div class="highlight-default notranslate"> <div class="highlight"> <pre><divid="app">input element：<inputv-model="message"placeholder="Edit Me……">input The form message is: {{ message }}textarea element：<textareav-model="message2"placeholder="Multiple line text input……">
textarea The form message is:
{{ message2 }} In the text area   textarea   interpolation does not work and needs to be used   v-model   instead of:
 
{{ text }}



 Check box  ¶ 
If the check box is a logical value, if there are more than one, bind to thesame array:
 
 2.15.2.  Check box  ¶ 
The two-way data binding of check boxes is demonstrated in the following example:
Single checkbox：
{{
checked
}}Single checkbox：

Runoob
Google
taobao
The selected value is:
{{ checkedNames }}
    The effect of checking the check box in the instance is as follows: 
   
   
                        
                    
                
            
            
                

    
    


            
            





        
        
            

    
        
            
                
                    
                        
                            
                            
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   In recent years, Geographic Information Systems (GIS) have undergone rapid development in both theoretical and practical dimensions. GIS has been widely applied for modeling and decision-making support across various fields such as urban management, regional planning, and environmental remediation, establishing geographic information as a vital component of the information era. The introduction of the “Digital Earth” concept has further accelerated the advancement of GIS, which serves as its technical foundation. Concurrently, scholars have been dedicated to theoretical research in areas like spatial cognition, spatial data uncertainty, and the formalization of spatial relationships. This reflects the dual nature of GIS as both an applied technology and an academic discipline, with the two aspects forming a mutually reinforcing cycle of progress. 
 
 
                            
                        
                    
                    
                        
                            
                                
                                    
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