select a value in a select js

<body> <select id="list" style="padding: 10px;" onchange="getSelectValue();"> <option value="js">JavaScript</option> <option value="php">PHP</option> <option value="c#">Csharp</option> <option value="java">Java</option> <option value="node">Node.js</option> </select> <script> function getSelectValue() { var selectedValue = document.getElementById("list").value; alert(selectedValue); } getSelectValue(); </script> </body>

js select option value when selected

(function() {
    
    // get references to select list and display text box
    var sel = document.getElementById('scripts');
    var el = document.getElementById('display');


    function getSelectedOption(sel) {
        var opt;
        for ( var i = 0, len = sel.options.length; i < len; i++ ) {
            opt = sel.options[i];
            if ( opt.selected === true ) {
                break;
            }
        }
        return opt;
    }

    // assign onclick handlers to the buttons
    document.getElementById('showVal').onclick = function () {
        el.value = sel.value;    
    }
    
    document.getElementById('showTxt').onclick = function () {
        // access text property of selected option
        el.value = sel.options[sel.selectedIndex].text;
    }

    document.getElementById('doLoop').onclick = function () {
        var opt = getSelectedOption(sel);
        el.value = opt.value;
    }
    
}());
// immediate function to preserve global namespace

Posted by: Guest on December-27-2020

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