How to trigger HTML button when you press Enter in textbox?

Question

So the code that I have so far is:

    
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Answer 1

I found w3schools.com howto, their try me page is at the following.

https://www.w3schools.com/howto/tryit.asp?filename=tryhow_js_trigger_button_enter

This worked in my regular browser but did not work in my php app which uses the built in php browser.

After toying a bit I came up with the following pure JavaScript alternative that works for my situation and should work in every other situation:

    function checkForEnterKey(){
        if (event.keyCode === 13) {
            event.preventDefault();
            document.getElementById("myBtn").click();
        }
    }

    function buttonClickEvent()
    {
        alert('The button has been clicked!');
    }

HTML Press the enter key inside the textbox to activate the button.

    

    
    

    Button