想要搜索文本并获取匹配项数:
<!DOCTYPE html>
<html>
<head>
<script type="text/javascript" src="http://code.jquery.com/jquery-1.4.4.min.js"></script>
<script type="text/javascript">
function searchText(text) {
var pattern = new RegExp("/" + text + "/g");
var totalMatchCount = ($('Test').text().match(pattern) || []).length;
alert(totalMatchCount)
}
</script>
</head>
<body>
<div id="Test">
2015-11-05 22:01:00,062 WARN [] (Thread-1169 (HornetQ-client-global-threads-643998766)) The license you are using has expired or is bad. value: -5
2015-11-05 22:02:00,026 WARN [] (Thread-1165 (-client-global-threads-643998766)) The license you are using has expired or is bad. value: -5
2015-11-05 22:03:00,049 WARN [] (Thread-1180 (-client-global-threads-643998766)) The license you are using has expired or is bad. value: -5
</div>
<button onclick="searchText('WARN')">Search</button>
</body>
</html>
我正在搜索 WARN 单词并使用 RegExp() 方法作为模式，
但它不起作用。
最佳答案
两个问题:
- 将
varpattern = new RegExp("/"+ text + "/g");更改为varpattern = new RegExp(text, "g");RegExp期望标志用作第二个参数 - 选择器不正确。
$('测试').text().。未使用 id 选择器$('#Test').text()。
function searchText(text) {
var pattern = new RegExp(text, "g");
var totalMatchCount = ($('#Test').text().match(pattern) || []).length;
console.log(totalMatchCount);
document.getElementById('result').innerHTML = JSON.stringify($('#Test').text().match(pattern), 0, 4);
}<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="Test">
2015-11-05 22:01:00,062 WARN [dms.framework.licensing.LicenseManager] (Thread-1169 (HornetQ-client-global-threads-643998766)) The license you are using has expired or is bad. value: -5 2015-11-05 22:02:00,026 WARN [dms.framework.licensing.LicenseManager]
(Thread-1165 (HornetQ-client-global-threads-643998766)) The license you are using has expired or is bad. value: -5 2015-11-05 22:03:00,049 WARN [dms.framework.licensing.LicenseManager] (Thread-1180 (HornetQ-client-global-threads-643998766)) The license
you are using has expired or is bad. value: -5 2015-11-05 22:04:00,029
</div>
<button onclick="searchText('WARN')">Search</button>
<hr />
<pre id="result"></pre>关于javascript - Jquery 字符串与正则表达式匹配不起作用，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/33561281/