My alert does not work when I click on select option

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I loop through a JSON to put the model names into the select option.
That is right!
But after clicking on the select option, the alert does not work.
Why?

What I have tried:

HTML

<pre><!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>

    <script>
        autos = [{
            id: 1,
            year: 2011,
            model: 'FORD FIESTA CONNECTED 1.1L PFI3',
            color: 'MAGNETIC',
            ccm: 1100,
            fuel: 'benzin',
            performance: '55 kW / 74 LE',
            gearbox: '5 FOK. MANUÁLIS'
        },
        {
            id: 2,
            year: 2006,
            model: 'FORD ECOSPORT TITANIUM 1.0L 125 M6',
            color: 'DESERT ISLAND BLUE',
            ccm: 990,
            fuel: 'benzin',
            performance: '92 kW / 125 LE',
            gearbox: '5 FOK. MANUÁLIS'
        },
        {
            id: 3,
            year: 2021,
            model: 'FORD Focus Connected 5 ajtós 1.0 ',
            color: 'Kék',
            ccm: 990,
            fuel: 'benzin',
            performance: '91 kW / 123 LE',
            gearbox: '6 FOK. MANUÁLIS'
        },
        {
            id: 4,
            year: 2021,
            model: 'FORD PUMA',
            color: 'Kék',
            ccm: 1000,
            fuel: 'benzin',
            performance: '91 kW / 123 LE',
            gearbox: '6 FOK. MANUÁLIS'
        },
        {
            id: 5,
            year: 2021,
            model: 'FORD KUGA TITANIUM 1.5L ECOBOOST 150 M6',
            color: 'SOLAR SILVER',
            ccm: 1497,
            fuel: 'benzin',
            performance: '110 kW / 149 LE',
            gearbox: '6 FOK. MANUÁLIS'
        },
        {
            id: 6,
            year: 2021,
            model: 'FORD MONDEO Titanium 2.0 FHEV 187 LE',
            color: 'Metal Blue',
            ccm: 1999,
            fuel: 'Hybrid',
            performance: '110 kW / 147 LE',
            gearbox: 'CVT AUTOMATA'
        },
        {
            id: 7,
            year: 2021,
            model: 'FORD S-MAX TITANIUM 2.0L TDCI 150LE M6 FWD',
            color: 'MAGNETIC',
            ccm: 1997,
            fuel: 'Dízel',
            performance: '110 kW / 149 LE',
            gearbox: '6 FOK. MANUÁLIS'
        },
        {
            id: 8,
            year: 2021,
            model: 'FORD GALAXY TITANIUM 2.0TDCI 150LE M6 FWD',
            color: 'MAGNETIC',
            ccm: 1997,
            fuel: 'Dízel',
            performance: '110 kW / 149 LE',
            gearbox: '6 FOK. MANUÁLIS'
        },
        ]


        //OPTIONS
        var x = document.createElement("SELECT");
        x.setAttribute("id", "mySelect");
        document.body.appendChild(x);


        for (i = 0; i < autos.length; i++) {
            var z = document.createElement("option");
            z.setAttribute("value", autos[i].model);
            var t = document.createTextNode(autos[i].model);
            z.appendChild(t);
            document.getElementById("mySelect").appendChild(z);
        }

        opts = document.getElementsByTagName("option")
        for (i = 0; i < opts.length; i++) {
            console.log(opts[i])
            opts[i].onclick = function () {
                alert("Why does not get alert??")
            }
        }

    </script>
</body>

</html>

Posted 4-Aug-22 2:59am

folza

Updated 4-Aug-22 3:57am

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Chris Copeland · Accepted Answer · 2022-08-04T03:57:00

Solution 1

The <option> element doesn't support onclick, instead you need to listen to the onchange event in the <select> element. Here's an example based on the JS you've provided[^], give it a whirl and see whether this is what you're after.

Posted 4-Aug-22 3:57am

Chris Copeland