lastIndexOf() - 相容性 此方法是ECMA-262标准的JavaScript扩展;因此,它可能不存在于该标准的其他实现中。要使其工作,您需要在脚本顶部添加以下代码。 if (!Array.prototype.lastIndexOf) { Array.prototype.lastIndexOf=function(elt /*, from*/) { var len=this.length; var from=Number(arguments[1]); ...
Get last index of India from given Array You can use the array.prototype.lastindexOf("India") javascript method in Vue.js to find the last index of an item in an array , as given simply below:Vue js Array lastindexOf Example 1 2 Get last Index 3 Last Index: {{result}} 4 5 ...
if (!Array.prototype.lastIndexOf) { Array.prototype.lastIndexOf = function(searchElement /*, fromIndex*/) { 'use strict'; if (this === void 0 || this === null) { throw new TypeError(); } var n, k, t = Object(this), len = t.length >>> 0; if (len === 0) { return ...
可以参考：if (!Array.prototype.lastIndexOf) { Array.prototype.lastIndexOf = function(searchElement /*, fromIndex*/) { 'use strict';if (this === void 0 || this === null) { throw new TypeError();} var n, k,t = Object(this),len = t.length >>> 0;if (len === 0) { ...
1、详解JavaScript中数组和字符串的lastIndexOf()方法用法_ Atotype.lastIndexOf 和 Stotype.lastIndexOf 是特别的有用的方法,不过许多人不知道它其实可以传递两个参数,其次个参数决定了搜索的起始位置: 语法 str.lastIndexOf(searchValue, fromIndex) lastIndexOf() 方法返回指定值在调用该方法的字符串中最终消失...
1if(!Array.prototype.lastIndexOf) {2Array.prototype.lastIndexOf =function(searchElement/*, fromIndex*/) {3'use strict';45if(this===void0 ||this===null) {6thrownewTypeError();7}89varn, k,10t = Object(this),11len = t.length >>> 0;12if(len === 0) {13return-1;14}1516n =...
❮PreviousJavaScript ArrayReferenceNext❯ Examples Find the last index of "Apple": constfruits = ["Apple","Orange","Apple","Mango"]; letindex = fruits.lastIndexOf("Apple"); Try it Yourself » More than one apple: constfruits = ["Orange","Apple","Mango","Apple","Banana","Apple...
Output of above example
JavaScript String Methods JavaScript String Search Browser Support lastIndexOf()is an ECMAScript1 (JavaScript 1997) feature. It is supported in all browsers: ChromeEdgeFirefoxSafariOperaIE YesYesYesYesYesYes ❮PreviousJavaScript StringReferenceNext❯ ...
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