javascript测试机

功能：在网页输入框里面输入js代码；调试时按CTR+Enter组合键运行程序。

<style>
<!--
.button {
	width:80px;
}
-->
</style>
<script>
<!--
function clsNums() {
	var txt = document.getElementById("txt");
	var reg = /^\s*\d+/gm
	txt.value = txt.value.replace(reg, "");		
}

function run() {
	var txt = document.getElementById("txt");
	try {
		eval(txt.value);
	} catch (e) {
			alert(e.description)
	}
}

document.onkeydown = function() {
	if(event.ctrlKey && event.keyCode==13)
		run();
}
/*
** HTML标记：<(.*)>[\d\D]*</\1>
*/
function rpl() {
	var txt = document.getElementById("txt");
	var reg = new RegExp(document.getElementById("reg").value,"mg");
	txt.value = txt.value.replace(reg, document.getElementById("replaceText").value);		
}
-->
</script>
<input type="button" class="button" value="清除行数" onclick="clsNums()" />
<input type="button" class="button" value="运行" onclick="run()" title="快捷键：Ctrl+Enter" />
查找什么：<input type="text" id="reg" />
替换为：<input type="text" id="replaceText" />
<input type="button" class="button" value="全部替换" onclick="rpl()" />
<textarea id="txt" style="width:100%; height:80%" onkeydown="return !(event.ctrlKey && event.keyCode==13);"/>