Move value from inputA to inputB
HTML
<html>
<body>
<input id="my-input" />
<input id="my-output" />
<input type="button" onClick="getInputValue()" value="Перенести" />
<script>
function getInputValue() {
var input = document.getElementById("my-input");
var output = document.getElementById("my-output");
output.value = input.value;
input.value = "";
}
</script>
</body>
</html>