Example #4 Code: <!DOCTYPEhtml>JavaScript zIndex propertyClick here to get the zIndex valueDefault z-index is 0. Here image is at the back of the text since zIndex value is -1 which is less than 0.functionzIndexFunction(){alert(document.getElementById("img").style.zIndex);}...
Example 4: lastIndexOf() For Case-Sensitive Search ThelastIndexOf()method is case sensitive. For example: varstr ="I love JavaScript"; // lastIndexOf() with "JavaScript" as substrvarresult1 = str.lastIndexOf("JavaScript"); console.log(result1); // lastIndexOf() with "javaScript" as...
Example 1In the following example, we are fetching the first occurrence index of “2” in the specified array using the JavaScript Array indexOf() method.Open Compiler const numbers = [2, 5, 6, 2, 7, 9, 6]; const result = numbers.indexOf(2); document.getElementById("demo")...
字符串验证:可以使用indexOf方法检查字符串中是否包含特定的子字符串,以进行验证或条件判断。 字符串分割和提取:可以使用indexOf方法确定子字符串的位置,然后使用substring或slice等方法提取或分割字符串。 腾讯云提供了云函数(SCF)服务,可以用于部署和运行JavaScript代码。您可以使用云函数来执行包含indexOf方法的JS代码。...
Example Let's take a look at an example of how to use the indexOf() method in JavaScript. For example: vartotn_string='TechOnTheNet';console.log(totn_string.indexOf('t')); In this example, we have declared a variable calledtotn_stringthat is assigned the string value of 'TechOnTh...
Example 1: Using findIndex() method // function that returns even numberfunctionisEven(element){returnelement %2==0; }// defining an array of integersletnumbers = [1,45,8,98,7]; // returns the index of the first even number in the arrayletfirstEven = numbers.findIndex(isEven); ...
通过设置不同的起始位置,可以灵活地定位子串。...Java 中的 indexOf() 方法: indexOf() 方法用于在字符串中查找指定子串,并返回第一个匹配项的索引。它从指定的字符位置开始搜索,检查指定数量的字符位置。...indexOf 使用示例: package com.example.democrud.democurd.controller; public class IndexOfExample {...
The indexOf() JavaScript method returns -1 if a specified value does not appear in a list or string. Only the index value of the first occurrence of a value is returned. Often, you may want to find out whether the string or array contains a particular value. For example, you may ...
Having the index of the first word mentioned in thefirstWordAppearing, we used it as an additional parameter when determining the second word. After adding 1 to its value, we started reading by theindexOf()from the point next after the first character, and since it searches only for complete...
DOCTYPEhtml>This is an example for lastIndexOf() functionJavaScript String object the lastIndexOf() function :varstr="This is sample string.";document.write(str.lastIndexOf('i',6)+"");document.write(str.lastIndexOf('t',10)+"");document.write(str.lastIndexOf('h',0)+""); Output:...