js 复制，保存，运行代码

js 复制，保存，运行代码

function runcode(obj) {
        var winname = window.open('', "_blank", '');
        winname.document.open('text/html', 'replace');
        winname.opener = null  
        winname.document.writeln(obj.value);
        winname.document.close();
} //运行代码
function copycode(obj) {
var rng = document.body.createTextRange();
rng.moveToElementText(obj);
rng.scrollIntoView();
rng.select();
rng.execCommand("Copy");
rng.collapse(false);
} //复制代码
function savecode(obj) {
        var winname = window.open('', '_blank', 'top=10000');
        winname.document.open('text/html', 'replace');
        winname.document.write(obj.value);
        winname.document.execCommand('saveas','','code.htm');
        winname.close();
}保存代码