仅当存在分隔符时动态显示 MathJax
我一直在使用下面的示例代码进行调整。 MathJax 的文档不是很完整。有更多经验的人可以告诉我应该如何修改下面的代码，以便 Tex 仅在我指定了像 $\alpha$ 这样的分隔符时才进行解析。我想让它像 math.stackexchange 一样工作。
<html>
<head>
<title>MathJax Dynamic Math Test Page</title>
<script type="text/x-mathjax-config">
MathJax.Hub.Config({
tex2jax: {
inlineMath: [["$","$"],["\\(","\\)"]]
}
});
</script>
<script type="text/javascript"
src="http://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS_HTML-full">
</script>
</head>
<body>
<script>
//
// Use a closure to hide the local variables from the
// global namespace
//
(function () {
var QUEUE = MathJax.Hub.queue; // shorthand for the queue
var math = null; // the element jax for the math output.
//
// Get the element jax when MathJax has produced it.
//
QUEUE.Push(function () {
math = MathJax.Hub.getAllJax("MathOutput")[0];
});
//
// The onchange event handler that typesets the
// math entered by the user
//
window.UpdateMath = function (TeX) {
QUEUE.Push(["Text",math,"\\displaystyle{"+TeX+"}"]);
}
})();
</script>
<textarea id="MathInput" size="50" onkeyup="UpdateMath(this.value)"></textarea>
<div id="MathOutput">
You typed: ${}$
</div>
</body>
</html>
I have been tweaking with below sample code. The documentation for MathJax isn't very complete. Could someone more experience tell how I should modify the below code so that Tex is only parse when I have specified delimiters like $\alpha$. I would like to make it work like on math.stackexchange.
<html>
<head>
<title>MathJax Dynamic Math Test Page</title>
<script type="text/x-mathjax-config">
MathJax.Hub.Config({
tex2jax: {
inlineMath: [["$","$"],["\\(","\\)"]]
}
});
</script>
<script type="text/javascript"
src="http://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS_HTML-full">
</script>
</head>
<body>
<script>
//
// Use a closure to hide the local variables from the
// global namespace
//
(function () {
var QUEUE = MathJax.Hub.queue; // shorthand for the queue
var math = null; // the element jax for the math output.
//
// Get the element jax when MathJax has produced it.
//
QUEUE.Push(function () {
math = MathJax.Hub.getAllJax("MathOutput")[0];
});
//
// The onchange event handler that typesets the
// math entered by the user
//
window.UpdateMath = function (TeX) {
QUEUE.Push(["Text",math,"\\displaystyle{"+TeX+"}"]);
}
})();
</script>
<textarea id="MathInput" size="50" onkeyup="UpdateMath(this.value)"></textarea>
<div id="MathOutput">
You typed: ${}$
</div>
</body>
</html>
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您发布的示例代码采用 MathInput 的内容，并将第一个 MathJax 元素替换为 MathInput 中的新“数学”。您想要的是排版 MathInput 并为分隔文本创建新的 MathJax 元素。我在这里设置了一个 jsFiddle 示例：
http://jsfiddle.net/Zky72/2/
主要变化在 UpdateMath 函数中：
The sample code you posted takes the contents of the MathInput and replaces the first MathJax element with the new "math" from the MathInput. What you want is to Typeset the MathInput and create new MathJax elements for the delimited text. I setup a jsFiddle example here:
http://jsfiddle.net/Zky72/2/
The main change is in the UpdateMath function: