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This article mainly shows you "javascript how to replace the value selected in the text box", the content is easy to understand, clear, hope to help you solve your doubts, the following let the editor lead you to study and learn "how to replace the value selected in the text box by javascript" this article.

In JavaScript, you can use the value attribute to replace the value selected in the text box, which can set or return the default value of the password field. By getting the text box object and changing its value property value, you can modify the value of the text box. The syntax is "specify the text selected object .value = 'replaced value'".

The operating environment of this tutorial: windows10 system, javascript1.8.5 version, Dell G3 computer.

How javascript replaces the value selected in the text box

In js, you can change the value of a text box by getting the text box object and changing its value property value.

Examples are as follows:

Create a text box using the input tag and set its id property to test, which is used to get the text box object below. The default value of the input text box is set through value, for example, here the default value is 5566.

Create a button using the button tag, bind the button button to an onclick click event, and execute the editinput () function when the button is clicked.

In the js tag, create the editinput () function, in which the input object is obtained through id, and the value of the text box is modified by reassigning the value attribute of the object.

The syntax is as follows:

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