你也可以使用 RegExp.input来表示。 如果没有给正则表达式的exec或test方法提供字符串,并且RegExp.input中有值,则使用它的值来调用该方法。 脚本或浏览器能够预置input属性。如果被预置了值且调用exec或 test方法的时候没有提供字符串 则调用exec或test的时候使用input的值。input可以被浏览器以下面的方式设置: 当t...
functiontestFunction(){this.clearLocalStorage();varself=this;// 将this赋值给selfthis.timer=setTimeout(function(){self.clearBoard();},0);}; 在新浏览器中,可以使用bind()方法来传递引用: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 functiontestFunction(){this.clearLocalStorage();this.timer=...
var testArray= ["Test"]; function testFunction(testArray) { for (var i = 0; i < testArray.length; i++) { console.log(testArray[i]); } } testFunction(); 当用参数声明一个函数时,这些参数会成为本地参数。这意味着即使你有名称变量 testArray,函数中具有相同名称的参数仍会被视为本地参数。
Camel 标记法(驼峰):首字母是小写的,接下来的首字母都是以大写字符开头。例如: var myTestValue = 0; Pascal 标记法:首字母是大写的,接下来的字母都是以大写字符开头。例如:Var MyTestValue = 0, MySecondValue = 'hi'; 匈牙利类型标记法:在以Pascal 标记法命名的变量前附加一个小写字母(或小写字母序列,...
QUnit.reset( ) 重设函数,通常是在每个test函数执行后由QUnit自己调用来重设整个QUnit测试环境,当然必要时我们自己也可以调用它来复原,不常用。 Assertions: ok( state, [message] ) 断言。state值为true时表示通过,否则失败。 equal( actual, expected, [message] ) 比较参数actual和expected是否相等,相当于 ==...
Thefind()method returns the value of the first array element that passes a test function. This example finds (returns the value of ) the first element that is larger than 18: Example constnumbers = [4,9,16,25,29]; letfirst =numbers.find(myFunction); ...
('email', data.email, { validate: (val) => !/^[A-Z0-9.!#$%&'*+-/=?^_`{|}~]+@[A-Z0-9.-]+\.[A-Z]{2,}$/i.test(val) ? `The ${val} must be a valid email address.` : '' })}SubmitReset); } import{ useState }from'react';import{ useValidator }from'@validator...
only('should return -1 unless present', function() { // this test will be run }); it('should return the index when present', function() { // this test will not be run }); }); }); Note: Hooks, if present, will still be executed....
IfStmt: an if statement; use IfStmt.getCondition(), IfStmt.getThen() and IfStmt.getElse() to access its condition expression, “then” branch and “else” branch, respectively. LoopStmt: a loop; use Loop.getBody() and Loop.getTest() to access its body and its test expression, respectiv...
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