Detect changed input text box

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You can use the input Javascript event in jQuery like this:

$('#inputDatabaseName').on('input',function(e){
    alert('Changed!')
});

In pure JavaScript:

document.querySelector("input").addEventListener("change",function () {
  alert("Input Changed");
})

Or like this:

<input id="inputDatabaseName" onchange="youFunction();"
onkeyup="this.onchange();" onpaste="this.onchange();" oninput="this.onchange();"/>

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