我正在尝试在multiselect
中对选项进行排序,而忽略了这种情况。我已经看到了分别完成这些事情的方法,但我不确定如何一起完成它们。
这是我的HTML排序:
<form action="" method="get">
<label for="elliot">select:</label>
<select name="elliot" multiple="multiple" id="elliot1" style="height:140px;display:block;width: 200px;">
<option>d</option>
<option>Z</option>
<option>avery</option>
<option>5</option>
<option>Alive</option>
<option>8</option>
<option>b</option>
</select>
<button type="button" onclick="javascript:sortSelect(elliot1);">Sort</button>
</form>
这是我的JavaScript(注意:我不是在寻找jQuery解决方案):
function sortSelect(selElem) {
var tmpAry = new Array();
for (var i=0;i<selElem.options.length;i++) {
tmpAry[i] = new Array();
//tmpAry[i][0] = selElem.options[i].text;
tmpAry[i][0] = selElem.options[i].text;
tmpAry[i][1] = selElem.options[i].value;
}
tmpAry.sort();
while (selElem.options.length > 0) {
selElem.options[0] = null;
}
for (var i=0;i<tmpAry.length;i++) {
var op = new Option(tmpAry[i][0], tmpAry[i][1]);
selElem.options[i] = op;
}
return;
}
以下是jsFiddle
答案 0 :(得分:2)
您应该覆盖默认排序功能,如下所示:
tmpAry.sort(
function (a, b) {
var _a = a[0].toLowerCase();
var _b = b[0].toLowerCase();
if (_a < _b) return -1;
if (_a > _b) return 1;
return 0;
});
这是ECMAScript Array.sort一般形式:
function compare(a, b) {
if (a is less than b by some ordering criterion)
return -1;
if (a is greater than b by the ordering criterion)
return 1;
// a must be equal to b
return 0;
}