javascript tips

I changed the pop-up window in the project to the mask layer for display. Now I feel much better. Create a div with the same size as the body, so that you can cover all the pages. For more information, see this article, change the pop-up window in

Sometimes we need to automatically maximize the user experience when entering the page, eliminating the need for users to click the "maximize" button. Many article content websites have added this code to automatically maximize the Javascript code

You can use the following methods to check whether an attribute exists in an object: Use the in keyword, use the hasOwnProperty () method of the object, use undefined to determine, and directly judge in a condition statement, if you are interested,

It is not very common to click the drop-down menu to achieve the connection jump effect. I would like to share with you the specific implementation of another example. If you are interested, please refer 1. js Code The Code is as follows:

Determine whether you want to disable the global control or specify the control. If it is global, you only need to listen to the window. keyDownfunction (event ){.....} the same is true. If you are interested, you can check whether you want to

This article summarizes how to use js to determine that only numbers and letters can be entered for verification. For more information, see JS judgment can only be a number or a decimal point0. Chinese characters cannot be entered 1) 2)

In js, there are methods to convert strings into xml objects. If you are interested, refer to the following code snippets, you can use javasenthelper to convert strings into xml objects in java. parseText (xmlReturn ). getRootElement (); In js,

JS web page size to determine the instance method. For more information, see The Code is as follows: Function reachBottom (){Var scrollTop = 0;Var clientHeight = 0;Var scrollHeight = 0;If (document.doc umentElement & document.doc umentElement.

Drag the table title with the column width to change the size of the td file. This article will show you the example. If you are interested, refer to the example below. I hope it will help you learn js or css. The Code is as follows: Drag a

This article will introduce a security BUG in IE, which can be used to track users' system mouse positions. For more information about the private features of MS $, see DHTML in IE. It is interesting to see event. screenX and event. screenY, which

The mask is two divs. The popWindow-style div is used to cover the entire page and translucent. If you are interested, refer to the following. I hope it will help you learn js masks. The mask is two p, the p in the popWindow style is used to cover

For security reasons, the style of the button selected for the input [type & quot; file & quot;] file cannot be modified at Will (however, the transparency of the input can be modified ), may be incompatible with the designer's design. In this case,

The application of the javascript global variable encapsulation module is described in detail in this article. For more information, refer to the following code: The Code is as follows: /* Global window, jQuery, validate_email, masterUI, $, rest *

Let's look back at the Javascript scripts, which are not well written and too complicated. I have extracted and reconstructed them. If you want to learn about javascript refactoring, I can refer to this article. I am going to help you with some

If you do not need to display the called function and want it to be executed at the time of definition, how can you write it? Next, we will introduce the implementation steps in detail. If you are interested, let us know. 1. Preface The function

When you leave the page, determine whether there are unsaved input values, and then remind you. Next we will introduce the implementation steps. If you are interested, you can learn more. Javascript code The Code is as follows: // Determine

In the previous article, we explained the edge gradient computing function. This article describes the image pyramid. Image pyramid is widely used in computer vision applications. Image pyramid is an image set, all the images in the set are derived

I used javascript to write a doubebean game. I won't go into details about how to play it. I will find it on the Internet. It's very easy. Interested friends can understand it, it took two days to write a doubebean game using javascript. As for how

Dynamically change the height of the IFrame to automatically extend the IFrame. The parent page is also automatically scaled down. The principle is that when the IFrame sub-page is loaded, the parent IFrame object is called, change the height of the

In this column, I practiced table operations, including tBodies, rows, and cells, and sorting methods for Arrays: sort, if you are interested, you can study the table operations in this column, including tBodies, rows, and cells, and the sorting