The some() method checks if any of the elements in an array pass a test (provided as a function).The some() method executes the function once for each element present in the array:If it finds an array element where the function returns a true value, some() returns true (and does ...
JavaScript Array 对象实例检测数组中是否有元素大于 18:var ages = [3, 10, 18, 20];function checkAdult(age) { return age >= 18;}function myFunction() { document.getElementById("demo").innerHTML = ages.some(checkAdult);} 输出结果为:true...
JavaScript Array 对象实例检测数组中是否有元素大于 18:var ages = [3, 10, 18, 20];function checkAdult(age) { return age >= 18;}function myFunction() { document.getElementById("demo").innerHTML = ages.some(checkAdult);} 输出结果为:true...
somereturns abooleanvalue after passing each item in the source array through the test function that you pass in as the first parameter. This makes it well suited to the types of queries that require a simpleyesornoanswer. In this lesson we look at 2 practical use-cases forsome. The firs...
somereturns abooleanvalue after passing each item in the source array through the test function that you pass in as the first parameter. This makes it well suited to the types of queries that require a simpleyesornoanswer. In this lesson we look at 2 practical use-cases forsome. The firs...
JavaScript.Array.some() 方法用法 定义和用法: some() 方法用于检测数组中的元素是否满足指定条件(函数提供)。 some() 方法会依次执行数组的每个元素: 如果有一个元素满足条件,则表达式返回true , 剩余的元素不会再执行检测。 如果没有满足条件的元素,则返回false。
Array Tutorials: Array Tutorial Array Const Basic Array Methods Array Search Methods Array Sort Methods Array Iteration MethodsBrowser Supportsome() is an ECMAScript3 (JavaScript 1999) feature.It is supported in all browsers:Chrome Edge Firefox Safari Opera IE Yes Yes Yes Yes Yes Yes...
In the above example, we have used thesome()method to find out whether any element of theageArrayarray contains a value less than18. At first, we created the callback functioncheckMinor()that returns age less than18. We have then passedcallbackto thesome()method asageArray.some(checkMino...
记录下js 数组方法some的使用 arr.some(callback) some为数组中的每一个元素执行一次 callback 函数,直到找到一个使得 callback 返回一个true。 如果找到了这样一个值,some 将会立即返回 true。 否则,some 返回 false。 callback 只会在那些”有值“的索引上被调用,不会在那些被删除或从来未被赋值的索...
JavaScript Array some() 方法.pdf,JavaScript Array some() ⽅法 JavaScript Array some() ⽅法 JavaScript Array 对象 实例 检测数组中是否有元素⼤于 18: var ages = [3, 10 , 18, 20]; function chec Adult(age) { return age = 18; } function myFunction() { do