How to define a default value for "input type=text" without using attribute 'value'?

You should rather use the attribute placeholder to give the default value to the text input field.

e.g.

<input type="text" size="32" placeholder="1000" name="fee" />

You can set the value property using client script after the element is created:

<input type="text" id="fee" />

<script type="text/javascript>
document.getElementById('fee').value = '1000';
</script>

Here is the question: Is it possible that I can set the default value without using attribute 'value'?

Nope: value is the only way to set the default attribute.

Why don't you want to use it?

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