TypeError: Unexpected argument, expecting STRING (arg[1]) 定义函数: var addToStr = Str(function(a, b){ return a + b; }); 运行: addToStr(1, 1); 则报错: TypeError: Unexpected result, expecting STRING 1. [代码]define Type /* * The main class: Type */ var Type = function(){ t...
TypeScript 2.3以后的版本支持使用--checkJs对.js文件进行类型检查并提示错误的模式。你可以通过添加// @ts-nocheck注释来忽略类型检查;相反你可以通过去掉--checkJs设置并添加// @ts-check注释来选则检查某些.js文件。你还可以使用// @ts-ignore来忽略本行的错误。下面是
}//typeof可以判断基本类型(number string boolean null(typeof 返回object) undefined )和引用类型的function类型if(typeofi === 'number')return'number';elseif(typeofi === 'string')return'string';elseif(typeofi === 'boolean')return'boolean';elseif(typeofi === 'function')return'function';/...
Thematch()method returns the result of matching astringagainst aregular expression. Example constmessage ="JavaScript is a fun programming language.";// regular expression that checks if message contains 'programming'constexp =/programming/; // check if exp is present in messageletresult = message...
{margin-bottom:12px;}adf34y看不清换一张验证码确定letsum=[0,1,2,3,4,5,6,7,8,9,'a','b','c','d','e','f'];varcheck=document.getElementById("check");varcode;functionfun(){letstr="";for(leti=0;i<6;i++){letpos=Math.round(Math.random()*15);//注意这个写法,取随机数st...
--演示JS中正则表达式的用法-->//var reg = /^[0-9]{6}$/ ; //法一varreg=newRegExp("^[0-9]{6}$");//法二varstr="123456";varbRes=reg.test(str);//111使用正则表达式对象中的方法进行验证---只能用于判断是否匹配,功能类似于Java中的String类中的matches()方法//alert(bRes);//true//22...
delay showing and hiding the tooltip (ms) - does not apply to manual trigger type If a number is supplied, delay is applied to both hide/show Object structure is: delay: { show: 500, hide: 100 } container string | false false Appends the tooltip to a specific element container: 'body...
if (typeof name === 'string')console.log("Hello " + name)else console.log("Please input a Name")} hello(12) // Plese input a Name 默认情况下，函数返回未定义变量。若要返回任何其他值，则函数必须具备返回语句，而由该语句指定返回值。function something(){ } console.log(something()) ...
With the constructor, you can check if an object is aDate: Example (myDate.constructor=== Date); Try it Yourself » All Together typeof"John"// Returns "string" typeof("John"+"Doe")// Returns "string" typeof3.14// Returns "number" ...
NameTypeDefaultDescription animation boolean true Apply a CSS fade transition to the tooltip container string | false false Appends the tooltip to a specific element. Example: container: 'body'. This option is particularly useful in that it allows you to position the tooltip in the flow of the...