%o、%O 都是用来输出 Object 对象的,对普通的 Object 对象,两者没区别,但是打印dom节点时就不一样了: 实例 //console.log('%o',document.body.firstElementChild); ///console.log('%O',document.body.firstElementChild); 尝试一下 » 效果: %c 占位符是最常用的。使用 %c 占位符时,对应的后面的参数必须...
The console.log() function is a common way to print an object in JavaScript. This function will display/print the argument on a web console then a string can obtain as a result. Syntax: console.log(object); Let’s create an array called array that contains values: Sam and Roger and ...
In the realm of web development, the console log function may not maintain the same appeal as other JavaScript elements, but mastering it is crucial. It offers a concealed route to manage complex coding challenges, acting as a subtle yet powerful ally. Our exploration into the subtleties of p...
There are various methods provided by the JavaScript programming language which can be used for printing an output message on the console. All these methods can be accessed with the help of theconsoleobject. Each method has there own purpose and can be used based on your requirements. Below ar...
templatesInfo Object |null |undefinedreadonly The service metadata that contains the format and layout information for the printout. Example const print = new Print({ view: view, printServiceUrl: url }); view.ui.add(print, {position: "top-right"}); console.log("PrintViewModel templatesInf...
console.log('err', err); } }, isDOM: (typeofHTMLElement === 'object') ?function(obj) {returnobjinstanceofHTMLElement; } :function(obj) {returnobj &&typeofobj === 'object' && obj.nodeType === 1 &&typeofobj.nodeName === 'string'; ...
代码语言:javascript 代码运行次数:0 运行 AI代码解释 >>>importast>>>code='''...x=[1,2]...print(x)...'''>>>tree=ast.parse(code)>>>print(ast.dump(tree,indent=2))Module(body=[Assign(targets=[Name(id='x',ctx=Store())],value=List(elts=[Constant(value=1),Constant(value=2)],...
Visit the DOM documentation on Mozilla Developer Network to learn about the onbeforeprint event handler for the window object. Check out Mozilla's documentation on the "window.onafterprint" event handler. In brief, don't attempt to disrupt the printing process. Also, keep in mind that if you'...
代码语言:javascript 代码运行次数:0 运行 AI代码解释 2020-05-2320:41:57,990-__main__-INFO-This is a log info2020-05-2320:41:57,990-__main__-WARNING-Warning exists2020-05-2320:41:57,990-__main__-INFO-Finish[Finishedin0.2s]
既然打印的是 body 里的内容,那么我们可以手动创建一个 dom 元素,当执行 print() 时替换掉 body, print() 有两个生命周期勾子函数,分别是 beforeprint 和 afterprint, 在打印前替换dom 以实现打印我想要的 dom, 打印后重新恢复之前的 dom 就好了。