javascript string compare ignore case

IndexOf in JavaScript are strictly case-sensitive how do you ignore case? Put them all in uppercase or lowercase, then you can compare them. indexof The character position of the substring for the first time within the object with toLowerCase or

Where to insert JavaScriptJavaScript can appear anywhere in the HTML. Using tag , you can insert JavaScript anywhere in the HTML document, even before insert. However, if you want to insert in a page that declares a frame (frames page), you must

Where to insert JavaScriptJavaScript can appear anywhere in the HTML. Using tag The second and fourth lines are to let browsers that do not understand " tag. The reference tag also has an attribute: language (abbreviated Lang), which describes

Note: Reference sources with no title but pages are referred to as the sixth edition of the JavaScript Authority guide, and other references have title or URL annotations.One, easy to produce misunderstanding knowledge point record1, [] = =! []All

A deep understanding of memory leaks in JavaScript programs and a deep understanding of javascript Garbage collection frees us from allowing us to focus on application logic rather than memory management. However, garbage collection is not magical.

Front. Error handling is critical for Web application development, not anticipating possible errors in advance, not taking a recovery strategy in advance, and potentially leading to a poor user experience. Because any JavaScript error can cause a

Original Author: Andy CroxallOriginal link: Ten oddities and secrets about JavaScriptTranslation Editor: Rok Zhang Xinsen XuData types and Definitions1. Null is an objectJavaScript has a null type in many types, it has a unique value of NULL, that

Front. Error handling is critical for Web application development, not anticipating possible errors in advance, not taking a recovery strategy in advance, and potentially leading to a poor user experience. Because any JavaScript error can cause a

Today, I learned a JavaScript statement. As with other common programming languages such as C, Java, and so on, the statements in JavaScript contain: ① expression statements ② compound statements and empty statements ③ declaration Statements ④

1.JavaScript Introduction:JavaScript is the most popular scripting language on the Internet, and all modern HTML uses JavaScript. Since it is a scripting language, there are three types of features:(1) weak type;(2) interpreted language (no