// create a new array of numbers one to tenlet numbersOneToTen = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]; // by default, pop removes the last item from the arraynumbersOneToTen.pop(); 然后我们在数组上运行调用 pop() 方法。 // crea...
// by default, pop removes the last item from the array numbersOneToTen.pop(); 1. 2. 3. 4. 5. 6. 然后我们在数组上运行调用 pop() 方法。 // create a new array of numbers one to ten let numbersOneToTen = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]; // by default, pop remov...
3,4,5,6,7,8,9,10];// by default, pop removes the last item from the arraynumbersOneToTen.pop();// now let's print it outconsole.log(numbersOneToTen);// we should see// [ 1, 2, 3, 4, 5, 6, 7, 8, 9 ]
prototype原型方法 可以通过在Array的原型上添加方法来达到删除的目的。 Array.prototype.remove = function(dx) {if(isNaN(dx) || dx >this.length){returnfalse;}for(vari =0, n =0; i <this.length; i++) {if(this[i] !=this[dx]) {this[n++] =this[i];}}this.length -=1;};varcolors ...
//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 =...
array.remove(1); // 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); ...
log(lastItem); // 输出: 3 console.log(array1); // 输出: [1, 2] 如上所示,咱们定义了一个数组array1,并调用pop()方法来删除最后一项。pop()方法返回被删除的项3,原始数组变成了[1, 2]。 需要注意的是,pop()方法不仅会删除最后一项,还会更改数组的长度值。同时,当原始数组为空数组时,调用pop()...
Array 对数组的内部支持 Array.concat( ) 连接数组 Array.join( ) 将数组元素连接起来以构建一个字符串 Array.length 数组的大小 Array.pop( ) 删除并返回数组的最后一个元素 Array.push( ) 给数组添加元素 Array.reverse( ) 颠倒数组中元素的顺序 Array.shift( ) 将元素移出数组 Array.slice( ) 返回数组的...
Cycles the carousel to a particular frame (0 based, similar to an array). .carousel('prev') Cycles to the previous item. .carousel('next') Cycles to the next item. Events Bootstrap's carousel class exposes two events for hooking into carousel functionality. Both events have the following ...
// Create an Array constfruits = ["Banana","Orange","Apple","Mango"]; // At position 2, remove 1 item, add "Lemon" and "Kiwi" fruits.splice(2,1,"Lemon","Kiwi"); Try it Yourself » Array Tutorials: Array Tutorial Array Const ...