<html>
<body><script type="text/javascript">var str = "Visit W3School, W3School is a place to study web technology.";
var patt = new RegExp("W3School");
var result;while ((result = patt.exec(str)) != null) {
document.write(result);
document.write("<br />");
document.write(patt.lastIndex);
document.write("<br />");
}
</script></body>
</html>var patt = new RegExp("W3School");处原先是var patt = new RegExp("W3School", "g");
去掉g为什么老卡啊,两者区别是什么?
<body><script type="text/javascript">var str = "Visit W3School, W3School is a place to study web technology.";
var patt = new RegExp("W3School");
var result;while ((result = patt.exec(str)) != null) {
document.write(result);
document.write("<br />");
document.write(patt.lastIndex);
document.write("<br />");
}
</script></body>
</html>var patt = new RegExp("W3School");处原先是var patt = new RegExp("W3School", "g");
去掉g为什么老卡啊,两者区别是什么?
<body><script type="text/javascript">var str = "Visit W3School, W3School is a place to study web technology.";
var patt = new RegExp("W3School");
var result;while ((result = patt.exec(str)) != null) {
document.write(result);
document.write("<br />");
document.write(patt.lastIndex);
document.write("<br />");
}
</script></body>
</html>