Introduction to the use of confirm() method in JavaScript-JS Tutorial-php.cn

Introduction to the use of confirm() method in JavaScript

黄舟

Release： 2018-05-30 10:29:47

Original

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I believe many friends will know the meaning of confirm when they see the title. The confirm() method is used to display a dialog box with a specified message and OK and Cancel buttons, but there are still many friends who don’t know, so today we Let me introduce to you the use of confirm() method in JavaScript!

If the user clicks the OK button, confirm() returns true. If the cancel button is clicked, confirm() returns false.

It will block all user input to the browser until the user clicks the OK button or the Cancel button to close the dialog box. When confirm() is called, execution of the JavaScript code is paused and the next statement is not executed until the user responds.

Let’s learn how to use it through these two small examples:

The code is as follows:

<html>
<head>
<title>confrim 的使用方法</title>
<script type="text/javascript">
function clear1()
{
 if(confirm("确定要清空数据吗？"))
 {
 document.main.text1.value="";
 }
}
</script>
</head>
<boty>
<form name="main">
<input type="text" name="text1"/>
<input type="button" name="submit" value="数据清空" onclick="return clear1()"/>
</form>
</body>
</html>

<html>
<head>
<title>js confirm</title>
<script>
function begin()
{
 var a=confirm("郭杨和小代是好朋友吗？");
 if(a==true)
 {
 /*document.write("恭喜你答对了！");*/
 alert("恭喜你答对了！");
 begin();
 }
 else
 {
 /*document.write("你真是猪，这么简单的问题都答不对！");*/
 alert("你真是猪，这么简单的问题都答不对！");
 begin();
 }
 }
</script>
</head >
<body onload="begin()">
</body>
</html>

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Summary :

confirm() is used by us for a better user experience. I believe that friends can further understand the use of confirm() by studying this article. I hope Helpful for your work!

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