Copy the code as follows: //Amount format conversion function parsePrice(s) { var n = 2 //Set the number of retained decimal places s = parseFloat((s + "").replace(/[^/d/.-] /g, "")).toFi
This article introduces a summary of N postures for unlocking canvas exported images across domains. I would like to share them with you. The details are as follows: Uncaught DOMException: Failed to execute toDataURL on HTMLCanvasElement: Tainted c
http://r.qzone.qq.com/cgi-bin/user/cgi_personal_card?uin=Specifying a QQ number will return the following content: _Callback({"uin":queried QQ number,"qzone":1," nickname":"nickname
Previously, we explored the working principle of JavaScript from the parsing mechanism of the JavaScript engine. Now we use a more vivid example to illustrate the execution order of JavaScript code on the page. If the working mechanism of the JavaScript e
Recently I took over a requirement, which requires hybrid development. After the front-end is done with h5, the page can be embedded into ios and android. It requires the use of map navigation on Baidu Maps. The specific function points are as follows: If
As always, just look at the pictures! The effect is as follows: high-definition large picture! I have been working as a coder for many years, but my old eyes are dim and I can’t see the animation clearly? ! Then look at the static screenshots! ! ! The eff
This article is suitable for readers who are interested in canvas drawing, graphics, and front-end visualization. Wedge Everything has a cause. Recently, the product needs to have such a function: dyeing some graphics. Come to think of it, this is not som
Effect: Event: The blur event is triggered after three text boxes are entered. Calculate the average. Instructions: Call the method to calculate the average. Code: In the text box: Copy the code. The code is as follows:
Some scenarios, such as images obtained by canvas, or images returned by WeChat development SDK are in data:img format. We need to upload them to the server, and then they need to be converted. Convert dataURL to Blob//base64 to blobdataURItoBlob(dataURI
Recently, when working on a project, I encountered a situation where window.open was blocked by the browser, which made people extremely depressed. Although the page can be released in one's own environment, for users, users cannot be required to pass
In H5 marketing activities, a picture is often generated for users to share or save. In this case, there are two solutions. One is to let the back-end generate images and return an image address to the front-end for display. The other is for the front-end
When we browse the web, we often see the LOADING prompt that appears when data is loading. In fact, the principle of this function is very simple, that is, a DIV covers the current page, and then Loading is displayed on the covered DIV layer. Now let'
1. oncontextmenu="window.event.returnValue=false" will completely block the right mouse button<table border oncontextmenu=return(false)><td> no</table> Available for T
