<html>
<head>
<script type = "text/javascript" src = "../jquery-1.5.2.js"></script>
<script type = "text/javascript">
$(function(){
var re = /[abc]/i;
var str1 = "abcdefg";
$("div#d1").html(re.exec(str1));
});
</script>
</head>
<body>
<div id = "d1"></div>
</body>
</html>
我想把正则的结果输出到div里。为什么div里啥都没显示呢?
$("div#d1").html(re.exec(str1));这有什么错误吗?
var str1 = "abcdefg";
var temp;
while(temp = re.exec(str1)){
alert(temp[0]); // 这里temp 是一个捕获组,第一个元素是匹配到的字符串,后面的元素是捕获组,没有捕获组,数组长度应该就为了1了吧
}
// 如果只需要第一个值,则直接
temp =re.exec(str1);
if(temp){
alert(temp[0]);
}
<html>
<head>
<script type = "text/javascript" src = "../jquery-1.5.2.js"></script>
<script type = "text/javascript">
$(function(){
var re = /[abc]/i;
var str1 = "abcdefg";
$("#d1").html((re.exec(str1)).toString());
});
</script>
</head>
<body>
<div id = "d1"></div>
</body>
</html>