javascript pad string

" Console.log (num.tostring (2));//"1010" 2.String (): Applicable to all types, follow these rules If the value has the ToString () method, call the method (without parameters) and return the corresponding resultReturns "NULL" if the value is nullReturns "Undefined" if the value is undefined Example A string is a set of immutable ordered sequences of 16-bit values, each of which is usually from a U

The examples in this article describe the method of converting the string and hexadecimal representation strings of JavaScript implementations to each other. Share to everyone for your reference. as follows: This is written because of the discovery of SQL injection and XSS strings that are often used in hexadecimal notation, such asSELECT CONCAT (0x68656c6c6f);Get the Hello The wants this article

Implement the replaceAll () function of the String object in JavaScript, the string. replace Function In the JavaScript scripting language, it is certainly no stranger to using the replace () function for String objects, but there is no such method as the replaceAll () meth

This article mainly introduces the slice Method Entry Example of the JavaScript string object. The slice method is used to capture strings by specifying the start and end positions. For more information, see JavaScript slice Method The slice method is used to intercept a part of a string and return the

In-depth parsing of JavaScript numeric and string objects, javascript strings JavaScript Number objectJavaScript has only one numeric type.You can use or do not use the decimal point to write numbers.JavaScript numbersJavaScript numbers can be written using or without decimal points:Instance Var pi = 3.14; // use the d

JavaScript has a very useful function of eval ("string")This function can convert a string into an object or a statement that can be executed, such as your code can be usedObj2=eval ("DOCUMENT.A.C" +i), in addition you can also write eval ("alert ()"),Eval ("a+=2") so that you can let the user input the JavaScript stat

Basic usage example of a JavaScript string object (string), javascriptstring This example describes the basic usage of a JavaScript string object (string. We will share this with you for your reference. The details are as follows:

In JavaScript, there are three main ways to convert any value to a string. this article explains each method and its respective advantages and disadvantages. Note: When I was reading ES5 two days ago, I came up with a question. Today I saw this article, and I just explained it clearly. In JavaScript, there are three main ways to convert any value into a

It is often encountered in Web display. The title is too long and the string needs to be intercepted. If CSS is used, there are various compatibility problems, the following describes how to intercept a string by byte in javascript as a front-end developer who often encounters this problem during webpage display. The title is too long and the

JavaScript Replace method The Replace method is used to replace some strings in strings, or to replace strings that match a regular match, and to return the replaced string. The syntax is as follows: Copy Code code as follows: Str_object.replace (REG_EXP/STR, replacement) Parameter description: Parameters Description Str_object The

= "Hellow,"; varStr2= "World"; Console.log (Str1.concat (str2)); //Hellow,world String Connection //The Search () method is used to retrieve the substring specified in a string, or to retrieve a substring that matches a regular expression. Console.log (S.search (/pomelo/));//7 exists then returns the first word Poute, does not exist then returns-1 //The match () method can be retrieved within a

The Join ("") method of JavaScript, which turns the array into a uniform string used to write long argument stringsfunction m (a) { var b = ["B.push ("Return B.join ("")}[13 Migration]javascript Join ("") method, the array into a uniform string, used to write a long output string