Analysis of the method of obtaining the select value in javascript_javascript skills

The example in this article describes the method of obtaining the select value in javascript. Share it with everyone for your reference. The specific analysis is as follows:

1. Get the displayed Chinese characters

Copy code The code is as follows:

document.getElementById("bigclass").options[window.document.getElementById(" bigclass").selectedIndex].text

2. Get the id in the database

Copy code The code is as follows:

window.document.getElementById("bigclass").value

3. Get the index id assigned by the select group

Copy code The code is as follows:

window.document.getElementById("bigclass").selectedIndex

Example:

<select name="bigclass" id="bigclass" onChange="javascript:updatePage2();">
<option value="" selected="selected">ajax实验</option>
<option value="4">我适宜市哈</option>
</select>

Use:

Copy code The code is as follows:

document.getElementById("bigclass").options[window.document.getElementById(" bigclass").selectedIndex].text

The result is: I am suitable for the city

Use:

Copy code The code is as follows:

window.document.getElementById("bigclass").value

The result is: 4

Use:

Copy code The code is as follows:

window.document.getElementById("bigclass").selectedIndex

The result is: 1

I hope this article will be helpful to everyone’s JavaScript programming design.