https://developer.mozilla.org/zh-CN/docs/Web/JavaScript/Reference/Global_Objects/Array/splice constmonths = ['Jan','March','April','June'];// remove last one itemmonths.splice(months.length-1,1);// ["June"]console.log(months);// ["Jan", "March", "April"] constmonths = ['Jan',...
item1, item2,. . .,itemN 必选项。要在所移除元素的位置上插入的新元素。 说明 splice 方法可以移除从 start 位置开始的指定个数的元素并插入新元素,从而修改 arrayObj。返回值是一个由所移除的元素组成的新 Array 对象。 Java代码 : var arr = new Array(0,1,2,3,4); // 删除从2开始的两个元素,...
//遍历整个数组,移除匹配item的元素,使用强比较===,给第二个参数的话就从头开始找到第一个匹配item元素移除后返回;//如有找到元素返回处理后的数组自身,如果没有找到过就返回undefined;Array.prototype.Remove =function(item, all) {varresult, isType = Object.prototype.toString, i, len, start, hasLast =...
// Remove the second-to-last item from the array array.remove(-2); // Remove the second and third items from the array array.remove(1,2); // Remove the last and second-to-last items from the array array.remove(-2,-1); 如果不想扩展 Array 的 prototype 的话,也可以向下面这样写成...
document.getElementById("myNewArray").innerHTML="The new array is: "+myArr; } Remove Multiple Array Element <pid="myNewArray"> The elements to remove from the given array are [9, 7, 17]. You can click the button given above to remove multiple array elements. The output contains ...
博客分类: javascriptJavaScriptprototype function RemoveArray(array, attachId) { for (var i = 0,n = 0; i < array.length; i++) { if (array[i] != attachId) { array[n++] = array[i] } } array.length -= 1;} Array.prototype.remove = function (obj) { return RemoveArray(this, ...
Recently I was looking for how to remove a specific item from an array and I was surprised to see how many methods &ways to removean item from an array. So, I thought of adding mostly all of them in one place so, it can be easy for future perspectives & for other readers who like...
we will create a new empty array. All unique values from our array will be put into this array. We will loop over our array of data and check if the current item is in our new array. If it isn't then we put it in our new array. If it is in our new array then we do nothin...
Next, we want to remove all the falsy value from our array. In other words, we want to "filter" out the falsy values and just keep the truthy values.Create a new array with only truthy valuesDownload HD Image # Final SolutionWoohoo! You conquered another algorithm challenge! You have ...
JavaScript Code: // Function to remove an element from an array function remove_array_element(array, n) { // Find the index of the element 'n' in the array var index = array.indexOf(n); // Check if the element exists in the array (index greater than -1) ...