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Using jQuery to pass parameters across pages

WBOYOriginal: 2024-02-26 15:49:371161browse

Implementing query for parameters of another JSP page

With the popularity and development of the Internet, front-end development has become more and more important. As a popular JavaScript library, jQuery provides us with powerful capabilities to operate the DOM, handle events and achieve animation effects. During the development process, sometimes we need to obtain the parameters passed from another JSP page in a JSP page. At this time, we can use jQuery to achieve this.

Below I will use a specific case to demonstrate how to use jQuery to query the parameters of another JSP page.

Suppose we have two JSP pages, page1.jsp and page2.jsp, in which a parameter urlParam is passed from page1.jsp to the page2.jsp page. We need to get this parameter in the page2.jsp page and process it.

First, in the page1.jsp page, we need to assign a value to urlParam and jump to the page2.jsp page. The sample code is as follows:

<!DOCTYPE html>
<html>
<head>
    <title>Page 1</title>
</head>
<body>
    <script>
        var urlParam = "parameterValue";
        window.location.href = "page2.jsp?urlParam=" + urlParam;
    </script>
</body>
</html>

In the page2.jsp page, we need to obtain the value of the urlParam parameter through jQuery and process it accordingly. The sample code is as follows:

<!DOCTYPE html>
<html>
<head>
    <title>Page 2</title>
    <script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
</head>
<body>
    <div id="output"></div>

    <script>
        $(document).ready(function(){
            var urlParams = new URLSearchParams(window.location.search);
            var paramValue = urlParams.get("urlParam");
            $("#output").text("参数值为：" + paramValue);
        });
    </script>
</body>
</html>

In this sample code, we first introduce the jQuery library, and then after the document is loaded, we obtain the parameters in the URL through URLSearchParams, and use the get method to obtain the urlParam parameter. value, and finally output the value to the page.

Through the above example, we successfully implemented the query for the parameters of another JSP page. The powerful functions of jQuery provide us with a convenient and fast way to process front-end data, making our development work more efficient and convenient.

Of course, in addition to the above simple examples, there may be more complex situations in actual applications. Developers can expand and optimize based on actual needs by combining other functions of jQuery.

I hope this article is helpful to you, thank you for reading!

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JavaScript jquery 事件 dom jsp

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