// Equality and relational operators test whether two values are equal, // unequal, less than, greater than, and so on. They evaluate to true or false. let x = 2, y = 3; // These = signs are assignment, not equality tests x === y // => false: equality x !== y // => ...
Thisifstatement returnsfalse(as expected) because x is not equal to 10: letx =0; if(x ==10) Try it Yourself » Thisifstatement returnstrue(maybe not as expected), because 10 is true: letx =0; if(x =10) Try it Yourself » ...
// Check if variable is equal to value if (username === "sammy_shark") { console.log(true); } 输出: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 true 如前所述,变量可以用来表示任何JavaScript数据类型。在本例中,我们将使用字符串、数字、对象、布尔值和null值声明变量。 代码语言:javascr...
This will throw if a64 does not pack into a JavaScript number with no loss of precision. // var isEqualTo42 = (a64 == 42); host.diagnostics.debugLog("isEqualTo42 >> ", isEqualTo42, "\n"); var isLess = (a64 < b64); host.diagnostics.debugLog("isLess >> ", isLess, "\n...
notStrictEqual( actual, expected, [message] ) 比较两个参数是否不严格相等,相当于 !== throws( block, expected, [message] ) 测试block函数是否抛出一个异常,抛出则通过,不抛则失败。 block:我们要测试的函数 expected:可选参数,是一个类型,用来验证第一个函数抛出的异常是否是我们预期的类型。
==equal to ===equal value and equal type !=not equal !==not equal value or not equal type >greater than <less than >=greater than or equal to <=less than or equal to ?ternary operator Note Comparison operators are fully described in theJS Comparisonschapter. ...
isEqual(value: any, comparing: any): boolean; isSameDay(value: TDate, comparing: TDate): boolean; isSameMonth(value: TDate, comparing: TDate): boolean; isSameYear(value: TDate, comparing: TDate): boolean; isSameHour(value: TDate, comparing: TDate): boolean; ...
a = b (check if a equals b) a != b (check if a does not equal b) a <= b (check if a is less than or equal to b) a >= b (check if a is greater than or equal to b) # Strings a + b (string concatenation)
3. Label if_notsame(this); 4. GotoIf(TaggedNotEqual(left, right), &if_notsame);...
The second one checks if the number is not equal to 10 (you could also write this as “number != 10”, but this way we first check if the number is equal to 10 and then perform a negation on the result). And the last one checks if the number is 15 or 16....