下面是一个使用for循环来检查字符串的方法: functioncontainsString(arr,str){for(leti=0;i<arr.length;i++){if(arr[i]===str){returntrue;}}returnfalse;}letcolors=['red','green','blue'];console.log(containsString(colors,'green'));// trueconsole.log(containsString(colors,'yellow'));// fa...
objArray.shift()---移去数组的第一个元素,并返回这个元素的值。这个方法的性质和pop方法很类似,pop方法是移去最后一个元素。 objArray.slice(start,end)--- 返回数组对象的一个子集,索引从start开始(包括 start),到end结束(不包括end),原有数组不受影响。如:[1,2,3,4,5,6].slice(1,4)将得到[2,3...
var div1= document.getElementById("div1"); var div2= document.getElementById("div2"); console.log("div1.contains(div2)="+div1.contains(div2)); //字符扩展contains就不会报错了 String.prototype.contains = function(a) { return - 1 < this.indexOf(a) }; var str1="jb51.net"; va...
* @param array * @returns {ArrayBuffer|Blob|Array.<T>|string}*/functiondiff(target,array) {varresult =target.slice();for(vari = 0;i < result.length;i++) {for(varj = 0; j < array.length;j++) {if(result[i] ===array[j]) { result.splice(i,1); i--;break; } } }returnres...
Find char combination in array of strings JavaScript - We have to write a function that accepts an array of strings and a string. Our job is to check whether the array contains any sequence or subsequence of the string as its element or not, and the func
Array.prototype.contains = function (obj) { return this.indexOf(obj) != -1; }; Array.prototype.copy = function (obj) { return this.concat(); }; Array.prototype.insertAt = function (obj, i) { this.splice(i, 0, obj); }; Array.prototype.insertBefore = function (obj, obj2) { va...
Array.prototype.containsObject =function(obj){vari;/*fromwww.java2s.com*/for(i = 0; i < this.length; i++) {if(this[i] === obj) {returntrue; } }returnfalse; }; Javascript Array containsObject(obj) Array.prototype.containsObject =function(obj) {varcontains = false;for(vari = 0; i...
JavaScript中扩展Array contains方法实例 Si**ne上传JavaScriptArraycontains 主要介绍了JavaScript中扩展Array contains方法实例,本文直接给出实现代码,需要的朋友可以参考下 (0)踩踩(0) 所需:1积分 电子签名板demo,含H5实现 2024-12-29 13:06:46 积分:1
Theincludesandcontainsboth methods search for a substring within a string or find elements within an array. Theincludes()is a method present in JavaScript, whereascontains()is not present in JavaScript. It is used in other languages such as Java. The includes() and contains() both have the ...
Hence,to check whether the array contains the specific string, we'll usejQuery.inArray()method and if this returns -1 then the array does not contain the string, otherwise, it contains the target string. Let's see the below given example. ...