functioncheckTrueUsingArraySome(array) {if(array.some((item)=>item===true)) {returntrue;}returnfalse;}vararrayVariable=[false,false,true,false,true];vararrayVariable1=[false,false,false,false,false];console.log(checkTrueUsingArraySome(arrayVariable));//trueconsole.log(checkTrueUsingArraySome(ar...
使用contains函数确定指定对象是否是Array对象中的元素。 在Mozilla Firefox 中,如果数组中的项已设置为undefined,则调用item 设置为undefined 的contains函数将返回true。同样的情况下,在所有其他浏览器中,函数都返回false。
regs.push(new Array("item_2","^[\\s\\S]+$","item_2Span","开户银行不能为空","填写正确",true)); regs.push(new Array("item_3","^[\\s\\S]+$","item_3Span","帐号不能为空","填写正确",true)); //regs.push(new Array("PlantArea","^[\\s\\S]+$","PlantAreaSpan","厂...
It’s really nice to know whether or not an item is contained within your array. Well you can write a function that takes the array and the item you’re checking for, but it’s much cleaner to add the contains( item ) method to the Array object. Extending JavaScript Arrays /** * A...
// Function to check if an array contains a specific elementconstcontains=(arr,element)=>{// Iterate through the array using the Array.prototype.some methodreturnarr.some(item=>item===element);};// Sample arrayconstarr=[2,5,9,6];// Output the result of checking if the array contains...
public static boolean useLoop(String[] arr, String targetValue) { for(String s: arr){ if(s....
The item to search for start Optional. Where to start the search. Negative values will start at the given position counting from the end, and search to the beginningJavaScript Array includes()ECMAScript 2016 introduced Array.includes() to arrays. This allows us to check if an element is ...
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 ...
arrayToHtmlList(['item 1', 'item 2'], 'myListID'); 6.average:平均数 const average = (...nums) => nums.reduce((acc, val) => acc + val, 0) / nums.length; average(...[1, 2, 3]); // 2 average(1, 2, 3); // 2 ...
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 ...