after reloading the asp page why textbox text will goes to blank?

After reloading t开发者_JAVA百科he page how can i get the previous values in that textbox again.

Because when that page reload then textbox value goes blank?

How can I do this using javascript and jquery?

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You don't typically save POST values with javascript or jquery (though it is probably possible)

You need to do something like <input type="text" value=" <? printf(POST['field']); ?>">