如何使用php和html基于组合框选择中的更改自动更改输入文本框的值

Question

Lets say there is a combobox with 3 values:a,b,c. There are also 3 text boxes. There is a database with 1 table which contains 4 columns. Now, how exactly can I update the values of the 3 inputboxes whenever I select a different value in the combobox. Lets say combobox represents the data in column 1 of the database table, textbox1 reporesents data for column 2, textbox2 for column3 and textbox3 for column4, so that the values of the text input boxes changes accordingly.

I am really sorry for being vague. Hope someone can still help me out. This has to be done using php html ajax and mysql.

Answer 1

this has to be done in javascript mainly. something like this (no valid code just mockup)

<select onchange="changeInputBoxes(this)"...> .... </select>
<script>
function changeInputBoxes(){
document.getElementById("inputid").value = this.value;
...
}
</script>

but its really to vague.