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The simplest, understandable and uncomplicated js implementation of enter key tab function text box jump When we beginners start to learn js form validation, they may want to use the enter key to realize the jump of text box, which is more convenient, but they will find that pressing the enter key will submit the form, which ...

# ajax dynamic loading web page # How to judge whether a web page is dynamically loaded? # Check the source code of the web page. If there is no data you want in the source code, try to visit the next page. When you click the next page, the whole page is not refreshed, but partially refreshed, most likely ajax loading # In case of ajax loading ...

At present, we use Python 2.7 (please do not despise, company environment, can't use Python 3) + robot framework to automate the function test. Today, we need to use selenium for web page operations, as follows   Installing the selenium 2 library Library Using pip installation, the process is simple: pip install robot framew ...

First, let's look at the style of the radio box: <div class="option" v-for="(option, ind) in item.surveyQuestionOptionList" :key="ind"> <input :value="option.selectid" type="radio" :id="'option' + item.qid + option.selectid" :name="item.qid" :checked="ind == 0"> <label :for="'option' + item.qid + option.selectid ...

1. Preface Recently, we are maintaining an old Web project, which uses DWR 2.0 (a remote communication framework that can call Java methods in js). Now we need to use this framework to upload files to and download files from the server. However, DWR 2.0 used in this project only supports calling Java methods with basic data types, String, List, ...

1. Loop through all drop-down list values2. Radio drop-down list3. Selection and cancellation of multi selection list4. Operate the radio box, multi box, assert and select all5. Assert keywords in page source code6. screenshots7. Drag page elements 1. Loop through all drop-down list values <!--Practicing html--> //Education back ...

Let's take a look at a picture: There are many ways to achieve this effect, such as directly using < input type = "range" / > to modify the style, or using the following methods to modify style HTML code: <div class="slider"> <button class="slider-track"></button> <button class="slider-thumb">&l ...

In this article, we will learn the related operations of HttpServletRequest on request header. In fact, there are two methods to learn. The first is to get the value of specific attribute in request header. The second method is to get all attributes. The return is an enumeration type.   1. Get the value of name in a request h ...

Design sketch: Four clients are started for testing 1. Log in and get the list of online users2. Private chat function3. Group chat function I found WebSocket by chance. I found that it can communicate in real time and chat online. So I made a demo of chat tool and recorded it Source code Socket.io WebSocket is native to js, and Socket.io is a ...

Technology stack: canvas JSZIP.js (the JSZIP Library of the compression and decompression plug-in on the web page side) Filesaver.js (file saved to local library) Direct interpretation of source code: <div class="cont"> <div class="uploadBtn">Select pictures<input name="file" accept="image/png, image/jpeg" multipl ...