How to set up a text box on the web front end

Set a text box in the Web front-end

In Web front-end development, the text box is a very common element. Text boxes can be used to receive data entered by the user and pass it to the backend for processing. This article will show you how to set up a basic text box in HTML and JavaScript.

Text box in HTML

In HTML, we can use the <input> element to create a text box. Here is a basic text box code example:

<input type="text" name="myInput">

In this example, we set the type property to text, which means we create a text box . We can also set the name attribute to specify the name of the input data.

If we want to limit the length of the text box, we can use the maxlength attribute. For example, if we want the text box to be no longer than 10 characters, we can set it like this:

<input type="text" name="myInput" maxlength="10">

In addition, we can also use the placeholder attribute to provide a default value for the text box. For example, if we want the default value of the text box to be "Please enter your username", we can set it like this:

<input type="text" name="myInput" placeholder="请输入您的用户名">

Text box in JavaScript

In JavaScript, we can use ## The #document.createElement method creates a new <input> element and adds it to the HTML document. Here is a JavaScript code example:

var myInput = document.createElement("input");
myInput.type = "text";
myInput.name = "myInput";

<input> element using the createElement method. We then set the type and name properties to create a new text box.

defaultValue attribute. For example, if we want the default value of the text box to be "default value", we can set it like this:

var myInput = document.createElement("input");
myInput.type = "text";
myInput.name = "myInput";
myInput.defaultValue = "默认值";

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