首先定义一个函数 showHello，被调用的时候，弹出一个对话框"Hello JavaScript";
接着准备一个button元素,在button元素上增加一个属性
property是onclick,表示点击的时候触发
value是showHello()，调用showHello()函数
");
window.frames["iframe_show1098"].document.write(decodeHtml($("textarea#stepcodeTextarea1098").val()));
window.frames["iframe_show1098"].document.close();
$(window.frames["iframe_show1098"]).load(function(){
$("#iframe_show1098").height($("#iframe_show1098").contents().find("body").height()+showittryitheight);
});
$("#iframe_show1098").height($("#iframe_show1098").contents().find("body").height()+showittryitheight);
setTimeout(function(){
},500);
});
<script>
function showHello(){
alert("Hello JavaScript");
}
</script>
<button onclick="showHello()">点击一下</button>
<script>
function showHello(){
alert("Hello JavaScript");
}
</script>
<button onclick="showHello()">点击一下</button>
");
window.frames["iframe1098"].document.write(decodeHtml(code1098));
window.frames["iframe1098"].document.close();
//load和下面的非load必需并存，因为如果代码用到了jquery就必须使用load的方式
$(window.frames["iframe1098"]).load(function(){
$("#iframe1098").height($("#iframe1098").contents().find("body").height()+showittryitheight);
});
$("#iframe1098").height($("#iframe1098").contents().find("body").height()+showittryitheight);
alreadyWriteCode1098 = code1098;
$("#rendering1098").hide();
$("#rendered1098").show();
}
var tRereshRetry2DemoPanel1098 = setInterval(rereshRetry2DemoPanel1098,1000);
var binded1098 = false;
$("textarea#stepcodeTextarea1098").keyup(function(){
if(!binded1098){
$(window).bind('beforeunload',function(){
binded1098 = true;
return "xxxx";
});
}
var newCode = $(this).val()
code1098 = newCode;
/*below code is replaced by function rereshRetry2DemoPanel()*/
// if(code1098!=newCode){
// window.frames["iframe1098"].document.write("
");
// window.frames["iframe1098"].document.write(decodeHtml($("textarea#stepcodeTextarea1098").val()));
// window.frames["iframe1098"].document.close();
// $(window.frames["iframe1098"]).load(function(){
// $("#iframe1098").height($("#iframe1098").contents().find("body").height()+showittryitheight);
// });
// code1098 = newCode;
// }
});
$(".tryButton1098").click(function(){
$("#tryDiv1098").show();
$("#stepcodeTextarea1098").focus();
$("#stepcodeTextarea1098").height(200);
$("#iframe1098").height(0);
window.frames["iframe1098"].document.write("
");
window.frames["iframe1098"].document.write(decodeHtml($("textarea#stepcodeTextarea1098").val()));
window.frames["iframe1098"].document.close();
//load和下面的非load必需并存，因为如果代码用到了jquery就必须使用load的方式
$(window.frames["iframe1098"]).load(function(){
$("#iframe1098").height($("#iframe1098").contents().find("body").height()+showittryitheight);
});
$("#iframe1098").height($("#iframe1098").contents().find("body").height()+showittryitheight);
this.scrollIntoView(true);
editor1098.focus();
editor1098.setSize(null, "250");
$("#rendering1098").hide();
$("#rendered1098").hide();
});
var mixedMode = {
name: "htmlmixed",
scriptTypes: [{matches: /\/x-handlebars-template|\/x-mustache/i,
mode: null},
{matches: /(text|application)\/(x-)?vb(a|script)/i,
mode: "vbscript"}]
};
var editor1098 = CodeMirror.fromTextArea(document.getElementById("stepcodeTextarea1098"), {
lineNumbers: true,
styleActiveLine: true,
matchBrackets: true,
mode:"text/html",
theme:"eclipse",
selectionPointer: true,
lineWrapping: true,
extraKeys: {
"Alt-/": "autocomplete",
"Ctrl-F": "findPersistent",
"F8": function(cm) {
cm.setOption("fullScreen", !cm.getOption("fullScreen"));
},
"Esc": function(cm) {
if (cm.getOption("fullScreen")) cm.setOption("fullScreen", false);
}
}
});
editor1098.on("change",function(doc){
if(!binded1098){
$(window).bind('beforeunload',function(){
binded1098 = true;
return "xxxx";
});
}
var newCode = doc.getValue();
code1098 = newCode;
$("textarea#stepcodeTextarea1098").val(newCode);
if(alreadyWriteCode1098!=code1098){
lastModifedTime1098 = new Date().getTime();
$("#rendering1098").show();
$("#rendered1098").hide();
}
// alert(doc.getValue());
});
$(".CodeMirror").addClass("form-control");
// var editor1098 = CodeMirror.fromTextArea(, {
// lineNumbers: true,
// styleActiveLine: true,
// matchBrackets: true,
// theme:"eclipse",
// });
editor1098.on("change",function(doc){
// alert(doc.getValue());
});
$("#tryDiv1098").hide();
});
$("div.codemirrorTips span").addClass("glyphicon glyphicon-asterisk");
1. 双击选中单词
2. 三击选中整行
3. CTRL+F 查找
4. F8 全屏编辑，再次点击恢复
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