How to get modified value in JavaScript

The method for JavaScript to obtain and modify value is to use the value attribute to modify its value. The code is [var a=document.getElementById("hello");].

The operating environment of this tutorial: Windows 7 system, JavaScript version 1.8.5, DELL G3 computer.

javascript Get the method of modifying value:

Some elements have value attributes, such as input, bottom, select, etc. You can use the value attribute to modify its value.

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