alert(alert(1),alert(2));// 1,2,undefined , 虽然只接受一个参数,但函数加了括号就会执行; alert=null;// alert 是对象,也可以被清空 alert(1);// 报错:alert is not a function alert=setTimeout;// 改变 alert 的指向,alert就变成 setTimeout alert(x=>{console.log(10);},1000);// 10 这...
(function() { for (var i = 0; i < 5; i++) { console.count('count'); } })(); error() 输出信息时,在最前面加一个红色的叉,表示出错,同时会显示错误发生的堆栈。 console.error("Error: %s (%i)", "Server is not responding",500) group() 用于将显示的信息分组,可以把信息进行折叠和展...
日常工作中,难免存在为了代码调试而试验性地输出一些东西,曾经都爱用alert(),高兴了弹个数据,但让人头疼的是,它会中断代码执行,得手动关掉,所以有人就用 document.write(),这样也有弊端,它会把内容写到网页上,我们是调试代码,这样显得多余,种种原因,console.log()就成了香饽饽,它不会影响代码运行,且只会把内...
Sir, your code is so strange, as we all know that alert() function is a js code. But I never see <script> in your code. Please have a check this Js ep. a page with js 複製 <!DOCTYPE html> <html> <body> <p id="demo">Click the button to display the cookies associat...
functionAll(){alert(1); for(vari0; i10; i++){funcA(1000); }funcB(10000); }functionfuncA(count){for(vari0; icount; i++){}}functionfuncB(count){for(vari0; icount; i++){}}console.profile('性能分析器'); All(); console.profileEnd(); ...
warn:function(){ } }; 第二步,实现 console.log方法。在所实现的几个方法中这个是最复杂的。 从firebug的API中我们可以看到,console.log不仅仅可以输出信息,还提供了类似 string.Format的功能,直接引用原文如下: Here is the complete set of patterns that you may use for string substitution: ...
setTimeout(function(){ console.log("b2:"+b); },20); fn(e,d); fx(c); 输出结果: 原因: 1、console.log()函数会在setTimeout函数之前执行,并且b在输出之前未被定义所以最先输出undefined; 2、之后,会执行fn函数和fx函数,而fn函数内存在console.log函数,那么它将会先输出d的值4; ...
"Object is currently in use elsewhere" error for picturebox "Parameter is not valid" - new Bitmap() "Recursive write lock acquisitions not allowed in this mode.? "Settings" in DLL project properties and app.config file "The function evaluation requires all threads to run" while accessing mus...
On the certificate alert screen ("There is a problem with this website's security certificate"), clickContinue to this website (not recommended). In the address bar, click the redCertificate Erroralert. In the Security Alert dialog box, clickView Certificates. ...
一个接受args变量#的函数需要将整组args传递到另一个函数,该函数也接受args的变量#(例如,下面的函数不起作用): if(this.isDebugOnconsole.log(arguments); // does not work, prints "[object Arguments]"}var myObject = 浏览0提问于2014-01-05得票数 2 回答已采纳 1回答 VSCode调试控制台颜色更改 、...