[Check for missing traps] highlights 01 and 01

[Check for missing traps] highlights 01 and 01

Directory 1. jquery: Random Number generated by jsonp; browser type detection; element removal; prohibit Copying on the mobile end; select text; use of the anchor in markdown

 

I. jsonp generates random numbers

Use jquery's ajax method to send cross-origin requests. The request url contains a random number. The Code is as follows:

 1     $.ajax({ 2       type: "GET", 3       url: url, 4       dataType: "jsonp", 5       cache:true, 6       jsonpCallback: 'callback', 7       success: function(data) {), 8          //.... 9       },10       error: function() {11           //....12       }13     });    

Check the jquery manual to find that when datatype is jsonp, the default cache value is false. So passSet cache to true.

 

Ii. Check the browser type

1 var _ ua = navigator. userAgent. toLowerCase (); 2 window. UA = {3 weixin:/micromessenger /. test (_ ua), 4 android:/android /. test (_ ua), 5 ios:/\ biphone. * mobile | \ bipod | \ bipad | \ bmac OS x /. test (_ ua), 6 is360mse:/360 Aphone Browser | QHBrowser/I. test (_ ua) // 360 Browser (qhbrow.ios; 360 Aphone Browser Android) 7 };

 

 

3. Remove Elements

In Native JS, the methods for removing elements include removeChild and removeNode (IE only ). You cannot directly remove yourself.

Work und: Find the parent node of the element and then callRemoveChild ()Remove it.

 

4. Prohibit text copying and selection on the Mobile End

1 *{2 -webkit-user-select: none;3 user-select: none;4 }

 

 

5. Use of the anchor in markdown

1. A jump link is recommended.

[Description] (# jump)

2. Mark the position to jump to. markdown also supports html syntax.

<Span id = "jump"> jump here: </span>