[英]JavaScript - Replace two characters with each other?
我有一个字符串，我想用小'i'代替每个首都'I'，用'I'代替每个小'i'。 正如您所看到的，如果我分两个阶段执行此操作，它只需转换它，然后将其转换回之前的状态。 那我怎么一下子就这么做呢？
<html>
<head>
<script type="text/javascript">
function init() {
text = document.getElementById('test');
newtext = text.innerHTML.replace(/I/g, "i");
newtext = newtext.replace(/i/g, "I");
text.innerHTML = newtext;
}
</script>
</head>
<body onload="init()">
<div id="test">
THIS IS SOME TEST
</div>
</body>
</html>
newtext = text.innerHTML.replace(/[iI]/g, function(l) {
return l.toUpperCase() === l ?
l.toLowerCase() : l.toUpperCase();
});
当两个字符彼此相邻时，如何才能使Javascript正则表达式匹配？
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