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1, model layer writes an interface public interface IMyView { //How to login successfully void loginSuccess(); // Method of login failure void loginError(String error); //Get login name String getMobile(); //Get login password String getPassword(); } 2, The main method of model l ...

Custom verifier Basic syntax: xxx(params:AbstractControl):{[key:string]}:any{ renturn null; } The type of the incoming parameter is AbstractControl, which is the common parent class of FormGroup, FormControl and FormArray. The incoming parameter declares what object type the validator is used for (the three mentioned above) The return v ...

There are many compatibility problems with IE browser Master the skill, no longer afraid Open the homepage of the website with IE browser, why does the homepage display the mobile page? Note: the current version of ie browser is IE8 and below Here is the code in CheckMobile.java file (before compilation), as follows: JA ...

Today I wrote a small example of downloading an apk from the Internet by inputting the website. Record it for your own use. Operation rendering: Note: above Android 6.0 system, you need to dynamically apply for some dangerous permissions, that is, you need to actively pop up a dialog box to ask users whether they are willing to call the addre ...

With the advent of HTML5, the input element has added various types to accept various types of user input. Among them, button, checkbox, file, hidden, image, password, radio, reset, submit and text are traditional input controls, and 13 new ones are color, date, date time, datetime local, email, month, number, range, search, tel, time, url and ...

Thank you for your reference- http://bjbsair.com/2020-04-01/tech-info/18398.html This article will record the CSS fragments that we usually use. Using these CSS can help us solve many practical project problems. It's suggested to like the collection of wall cracks for later reference Attach note link, read more high-quality articles in the pas ...

Recently, I made a set of mobile shopping mall page, which has the function of uploading pictures to display thumbnails on the refund application page. I haven't done this before, so I sorted it out. First HTML: <p>Upload picture:</p> <div id="imgPreview"></div> <span class="upload-img">& ...

Regular expression 1, Introduction & overview Why regular expressions? Help us simplify string operation (judgment, replacement, cutting ). Regular expressions: expressions with correct rules   Effect: Simplify string operation (judgment, replacement, cutting ).   Pseudo code: Determine whether the current string is a QQ n ...

The blogger recommended jQuery Validate before, because it was used before, but the configuration was a little bit cumbersome. Until the recent project used the validform, it opened my eyes. The whole interface suddenly felt too friendly. Let's take a few renderings first. There are very few css and j ...

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