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JS obtains web page attributes including width, height, etc.

Copy the code as follows: function getInfo() { var s = ""; s += " The visible area width of the web page: "+ document.body.clientWidth+" "; s += " The visible area height of the web page: "+ document.b

2025-03-10
Parentelement, SRCELEMENT's summary

Copy code code as follows:

2025-03-10
Solution to the problem of js assignment containing single quotes and double quotes

My page is a jsp page, which contains a parameter: lefttree. This lefttree is spelled out from the background, and the content is html code: For example: Copy the code code as follows:<div onclick="show('tt1','abc')"> In the jsp page, you need to pass js

2025-03-10
The options of the two select multi -selected modes move each other (example code)

As shown below: Copy code code is as follows:

2025-03-10
javascript array operation (creation, element deletion, copy of array)

1. The code for creating an array is as follows: var arrayObj = new Array(); //Create an array var arrayObj = new Array([size]); //Create an array and specify the length, note that it is not the upper limit, it is the length var arrayO

2025-03-10
JavaScript closes the current page (window) without any prompts

1. The js code that closes the window without any prompts is copied as follows: <a href="javascript:window.opener=null;window.open('','_self');window.close();">Close</a> 2. Close

2025-03-10
Javascript: Set the readOnly attribute for input (example explanation)

1. js is<input> Set readOnly attribute<textarea name="content" id="content" cols="27" rows="6"></textarea> var cObj = document.getEleme

2025-03-10
A case of floating numbers

Sometimes there are several news or message prompts, and you can use absolute positioning to achieve the effect. What is the principle? 1. Get the number or status. The code copy is as follows: function getnewscount(){$time = date("Ymd",strtotim

2025-03-10
Get the id of the current click button to implement it with this.id

Copy the code as follows: function getid(id) { alert(id); }

2025-03-10
Dynamically add and delete table rows js implementation code

The code copy is as follows:<html><head><script language="javascript"> //窗口表格增加一行function addNewRow(){var tabObj=document.getElementById("m

2025-03-10
javaScript calculates the difference in days between two dates (sample code)

1: Calculate the number of days between two dates. For example: str1 = "2002-01-20" str2 = "2002-10-11" How to use JavaScript to calculate the number of days between str1 and str2? Copy the code code as follows:<html><head>

2025-03-10
The solution to the problem of the onClick failure after calling innerHTML

I recently wrote another project and used InnerHtml, but after I found that after calling InnerHtml, OnClick was invalidated. This is also expected. Because InnerHtml is an Button inserted in text, we cannot recognize the OnClick incident. Find the way, w

2025-03-10
JS string converts to the implementation method of numbers and numbers into string

The JS string is converted into numbers to convert the string to numbers, and the PARSEINT function is used. PARSEINT (String): The function starts from the start of String and returns an integer. Example: Parseint ('123'): Return 123 (int); PARSE

2025-03-10
Array stack method and characteristics of queue methods

Stack method: Last in First Outside queue method: The specific application of FIRST in FIRST OUTSIDE is as follows: Copy code code is as follows:

2025-03-10
A brief discussion on the use of HTML5 Web Worker

Web Worker is a javascript multi-threading solution provided by HTML5. We can hand over some computationally intensive code to the web worker to run without freezing the user interface. 1: How to use WorkerWeb The basic principle of Worker is to use the c

2025-03-10

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