This time I will bring you the use of JS to operate the content of the input text box. What are the precautions for using JS to operate the content of the input text box? The following is a practical case, let's take a look.
1 Introduction
Getting the text box and modifying its content can be achieved using thegetElementById() method.
getElementById()The method can get the HTML tag by the specified id and return it.
Syntax:
##sElement=document.getElementById(id)<a href="http://www.php.cn/code/658.html" target="_blank"></a>
: Used to receive a object returned by this method.
id: Used to set the id value that needs to be obtained from the HTML tag.
Second ApplicationGet the text box and modify its content
It will be displayed in the text box after the page is loaded "Initial text content", the content in the text box will be changed when the button is clicked.
三码<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>获取文本框并修改其内容</title>
</head>
<body>
<script language="javascript">
<!--
function c1()
{
var t=document.getElementById("txt");
t.value="www.jb51.net 修改文本内容"
}
-->
</script>
<input type="text" id="txt" value="初始文本内容" size="30"/>
<input type="button" value="更改文本内容" name="btn" onclick="c1();" />
</body>
</html>
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Detailed explanation of the steps of props passing dataWhat are the basic algorithms of JsHow to view and modify the document date and document sizeThe above is the detailed content of Use JS to manipulate input text box content. For more information, please follow other related articles on the PHP Chinese website!
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