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how to get text of selected option value in select box

<select name="model1" id="model" class="form-control" onchange="document.getElementById('model_text').value=this.options[this.selectedIndex].text,getType()">
 <option>Select car model</option>
            <!-- js populates -->
<input type="hidden" id="model_text" name="model" />
</select>

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