有时会发生我们的代码没有准备好并且编写测试用例来测试该方法/代码是否失败(如果运行). QUnit.only 在这方面有帮助.仅使用方法编写的测试方法将执行，而其他测试将不会运行.如果指定了多个方法，则只执行第一个方法.我们只看到实际的方法.
<html>
<head>
<meta charset = "utf-8">
<title>QUnit basic example</title>
<link rel = "stylesheet" href = "https://code.jquery.com/qunit/qunit-1.22.0.css">
<script src = "https://code.jquery.com/qunit/qunit-1.22.0.js"></script>
</head>
<body>
<div id = "qunit"></div>
<div id = "qunit-fixture"></div>
<script>
QUnit.module( "Module A", {
beforeEach: function( assert ) {
assert.ok( true, "before test case" );
}, afterEach: function( assert ) {
assert.ok( true, "after test case" );
}
});
QUnit.test( "test case 1", function( assert ) {
assert.ok( true, "Module A: in test case 1" );
});
QUnit.only( "test case 2", function( assert ) {
assert.ok( true, "Module A: in test case 2" );
});
QUnit.test( "test case 3", function( assert ) {
assert.ok( true, "Module A: in test case 3" );
});
QUnit.test( "test case 4", function( assert ) {
assert.ok( true, "Module A: in test case 4" );
});
</script>
</body>
</html>
