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複製代碼 代碼如下:
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title></title>
<!--<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.1/jquery.min.js" type="text/javascript"></script>-->
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js" type="text/javascript"></script>
<script type="text/javascript">
$(function () {
//根據select中的option的文本來執行選中
//$("#selectbox option[text='第二項']");
//$("#selectbox option").filter("[text='第二項']");
//上面兩種寫法都是錯誤的
//正確寫法
$("#btn4").click(function () {
var $option =$("#selectbox option:contains('第二項')").map(function(){
if ($(this).text() == "第二項") {
return this;
}
});
alert($option.length > 0 ? "有對象" : "無對象");
$option.attr("selected", true);
});
});
</script>
</head>
<body>
<form id="form1">
<div>
<select id="selectbox">
<option value="1">第一項</option>
<option value="2">第二項</option>
<option value="21">第二項1</option>
</select>
<input type="button" id="btn4" value="contains測試" />
</div>
</form>
</body>
</html>
$(".selector:contains('xx')")
contains()只作匹配尋找，不夠精確，包含xx的selector和包含xxabc的selector都會查到。
解決辦法：
?$(".selector:contains('xx')[innerHTML='xx']")
這樣將尋找內容只有xx的selector。
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