A simple example of JS getting the value and text value of select_javascript skills

Copy code The code is as follows:

< select id = "selectId" >
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var selectObj = document.getElementById('selectId');
// Add option through object
selectId.add(new Option("first","1"))
selectId.add(new Option("Second", "2"))
// Add option by id
selectId.add(new Option("Third", "3"))
selectId.add( new Option("Fourth", "4"))
// Add method through id (you can also add method through object)
selectId.onchange = function(){
// Get through object value and text
alert(selectObj.value);
alert(selectObj.options[selectObj.selectedIndex].text);
// Get value and text by id
alert(selectId.value) ;
alert(selectId.options[selectId.selectedIndex].text);
// You can also get value and text through this
alert(this.value);
alert(this.options[ this.selectedIndex].text);
};