In the previous post we learnt theEqual opeartor, from this post we are going to learn the Not equal operator inComparison Operators. Not equal (!==) Not equal is an comparison operator which is used to check the value of two operands are equal or not. If the value of two operands a...
console.log(JSON.stringify(e) ===JSON.stringify(f));// true 4、使用第三方库 lodash 的 isEqual() 方法。这个方法可以用来深度比较两个数组或对象,并返回一个布尔值(true 或 false)。例如: letg = {a:1,b:2}; leth = {b:2,a:1}; console.log(_.isEqual(g, h));// true 5、使用第三...
zero === negz // => true: zero and negative zero are equal 1/zero === 1/negz // => false: Infinity and -Infinity are not equal 3.2.4 二进制浮点数和舍入误差 实数有无限多个,但只有有限数量的实数(准确地说是 18,437,736,874,454,810,627)可以被 JavaScript 浮点格式精确表示。这意味着...
// 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...
1functionmyTest(val) {2if(val === 3) {3return"Equal";4}5return"Not Equal";6} 不相等运算符:!= 。与相等运算符是相反的。这意味着不相等运算符中,如果“不为真”并且返回false,在相等运算符中会返回true,反之亦然。与相等运算符类似,不相等运算符在比较的时候也会转换值的数据类型。
("areEqual >> ", areEqual,"\n");varareNotEqual = (a64 != b64); host.diagnostics.debugLog("areNotEqual >> ", areNotEqual,"\n");/// Auto-conversion occurs here. This will throw if a64 does not pack into a JavaScript number with no loss of precision.//varisEqualTo42 = (a64...
JavaScript programs may generate unexpected results if a programmer accidentally uses an assignment operator (=), instead of a comparison operator (==) in an if statement. Thisifstatement returnsfalse(as expected) because x is not equal to 10: ...
code).to.equal("InvalidInput"); errorWeExceptFor = error; } expect(errorWeExceptFor).not.to.be.null; //if this assertion fails, the tests results/reports will only show //that some value is null, there won't be a word about a missing Exception }); 👏 Doing It Right Example: A...
npm install javascript-time-ago --save If you're not using a bundler then use astandalone version from a CDN. Use importTimeAgofrom'javascript-time-ago'// English.importenfrom'javascript-time-ago/locale/en'TimeAgo.addDefaultLocale(en)// Create formatter (English).consttimeAgo=newTimeAgo('en...
!=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. JavaScript String Comparison ...