并为`config`参数设置一个默认值(一个空对象`{}`),以在默认设置足够时跳过第二个参数。 [Try in repl.it](https://repl.it/HK1b/0)```javascriptfunctionquote(str,{char='"',skipIfQuoted=true}={}){constlength=str.length;if(skipIfQuoted&&str[0]===char&&str[length-1]===char){returnstr;...
AI代码解释 type Decorator=(value:Input,context:{kind:string;name:string|symbol;access:{get?():unknown;set?(value:unknown):void;};isPrivate?:boolean;isStatic?:boolean;addInitializer?(initializer:()=>void):void;+metadata?:Record<string|number|symbol,unknown>;})=>Output|void; 所有装饰器的 conte...
Title>Call JS 4</PageTitle> Call JS Example 4 Set Stock @if (stockSymbol is not null) { @stockSymbol price: @price.ToString("c") } @if (result is not null) { @result } @code { private string? stockSymbol; private decimal price; private string? result; private async Task SetS...
除了使用函数声明之外,还可以使用匿名函数和箭头函数来创建函数。 // 匿名函数letfunctionName=function(parameter1,parameter2){// 函数体};// 箭头函数letfunctionName=(parameter1,parameter2)=>{// 函数体}; 匿名函数和箭头函数的使用方式与函数声明类似,但没有函数名。 作用域 全局作用域 在函数外部声明的变...
The alternative to passing a string as the first argument to these methods is to instead pass in afunction. Let’s look at an example. Here, then, would be a fairly typical use ofsetIntervalandsetTimeout, passing astringas the first parameter: ...
“Missing radix parameter.”:“缺少参数”, “Implied eval is evil. Pass a function instead of a string.”:“传递一个函数,而不是一个字符串”, “Bad invocation.”:“错误的调用”, “['{a}'] is better written in dot notation.”:“['{a}']最好用点.的方式”, ...
0" vspace="0" frameborder="0" scrolling="no">把 html 内容放到 iframe var html_string= "content alert(location.href);"; document.getElementById('iframe').src = "data:text/html;charset=utf-8," + escape(html_string); // alert data:text/html;charset=utf-8... // access cookie...
7.5 Never name a parameter arguments. This will take precedence over the arguments object that is given to every function scope. // bad function foo(name, options, arguments) { // ... } // good function foo(name, options, args) { // ... }...
The parameters, in a function call, are the function's arguments. JavaScript arguments are passed byvalue: The function only gets to know the values, not the argument's locations. If a function changes an argument's value, it does not change the parameter's original value. ...
Thesubstr()method is removed (deprecated) in the latest JavaScript standard. Usesubstring()orslice()instead. See Also: The split() Method The slice() Method The substring() Method Syntax string.substr(start,length) Parameters ParameterDescription ...