Created
August 29, 2019 07:29
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| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="UTF-8"> | |
| <meta name="viewport" content="width=device-width, initial-scale=1.0"> | |
| <meta http-equiv="X-UA-Compatible" content="ie=edge"> | |
| <title>Document</title> | |
| </head> | |
| <body> | |
| <input type="text" id="searchText" placeholder="search" list="searchList" /> | |
| <datalist id="searchList"> | |
| <select></select> | |
| </datalist> | |
| <script type="text/javascript"> | |
| var searchText = document.getElementById("searchText"); | |
| var searchList = document.getElementById("searchList"); | |
| window.addEventListener("load", function() { | |
| console.log("ok"); | |
| searchText.focus(); | |
| }); | |
| // 清空 | |
| function clean() { | |
| while(searchList.firstChild) { | |
| searchList.removeChild(searchList.firstChild); | |
| } | |
| } | |
| var timer = null; | |
| var typing = false; | |
| var onced = true; | |
| var tempResult = null; | |
| searchText.addEventListener("compositionstart", function(e) { | |
| typing = true; | |
| }); | |
| searchText.addEventListener("compositionupdate", function(e) { | |
| typing = true; | |
| }); | |
| searchText.addEventListener("compositionend", function(e) { | |
| typing = false; | |
| if(!onced) { | |
| clean(); | |
| searchList.appendChild(tempResult); | |
| } | |
| onced = true; | |
| }); | |
| searchText.addEventListener("input", function(e) { | |
| if(timer) { | |
| clearTimeout(timer); | |
| timer = null; | |
| } | |
| timer = setTimeout(function() { | |
| var value = e.target.value; | |
| console.log(value); | |
| var newSelect = document.createElement("select"); | |
| for(var i = 0; i < 10; i += 1) { | |
| var newOption = document.createElement("option"); | |
| newOption.value = value + "[" + i + "]"; | |
| newSelect.appendChild(newOption); | |
| } | |
| if(onced) { | |
| clean(); | |
| searchList.appendChild(newSelect); | |
| } | |
| else { | |
| tempResult = newSelect; | |
| } | |
| timer = null; | |
| }, 300); | |
| }); | |
| </script> | |
| </body> | |
| </html> |
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