Cocos Creator JS web平台复制粘贴代码（亲测可用）

 1 webCopyString: function(str){
 2         var input = str;
 3         const el = document.createElement(‘textarea‘);
 4         el.value = input;
 5         el.setAttribute(‘readonly‘,‘‘);
 6         el.style.contain = ‘strict‘;
 7         el.style.position = ‘absolute‘;
 8         el.style.left = ‘-9999px‘;
 9         el.style.fontSize = ‘12pt‘; // Prevent zooming on iOS
10 
11         const selection = getSelection();
12         var originalRange = false;
13         if (selection.rangeCount > 0) {
14             originalRange = selection.getRangeAt(0);
15         }
16         document.body.appendChild(el);
17         el.select();
18         el.selectionStart = 0;
19         el.selectionEnd = input.length;
20 
21         var success = false;
22         try {
23             success = document.execCommand(‘copy‘);
24         } catch (err) {}
25 
26         document.body.removeChild(el);
27 
28         if (originalRange) {
29             selection.removeAllRanges();
30             selection.addRange(originalRange);
31         }
32 
33         return success;
34     },