console.log(hex2int("1df")); 十进制整数转换16进制 function int2hex(num, width) { var hex = "0123456789abcdef"; var s = ""; while (num) { s = hex.charAt(num % 16) + s; num = Math.floor(num / 16); } if (typeof width === "undefined" || width <= s.length) { retu...
You can use the to string method: a = 64; a.toString(16); // prints "40" which is the hex value a.toString(8); // prints "100" which is the octal value a.toString(2); // prints "1000000" which is the binary value Share Improve this answer Follow answered Apr 17, 2014 a...
functionhex2Int(hex =''){if(typeofhex !=='string'|| hex ==='') {returnNaN}consthexs = [...hex.toLowerCase()]letresInt =0for(leti =0; i < hexs.length; i++) {consthv = hexs[i]letnum = hv.charCodeAt() <58? +hv : ((code ...
// String:'Hello'.toString(); // 'Hello'// Number:(42).toString(); // '42'// Boolean:true.toString(); // 'true'// BigInt:42n.toString(); // '42'// Symbol:Symbol('test').toString(); // 'Symbol(test)'重要的一点是打电话是安全的 toString() 任意 JavaScript 值 ,只要该值不...
String(字符串) Boolean(布尔值) Undefined(未定义/未初始化) Null(空对象) Symbol(独一无二的值,ES6 新增) BigInt (大整数,能够表示超过 Number 类型大小限制的整数,ES 2020新增) 引用数据类型(引用值): Object(对象。Array/数组 和 function/函数 也属于对象的一种) ...
lid64 =new HexStringToInt64StringConverter(true).convert(str); //true为有符号、false为无符号,str为十六进制字符串 4.二进制字符串与十六进制字符串相互转换: //二进制转十六进制functionbin_to_hex(str) { let hex_array=[{ key:0, val:"0000"}, { ...
functionhex2Int(hex ='') {if(typeofhex !=='string'|| hex ==='') {returnNaN}consthexs = [...hex.toLowerCase()]letresInt =0for(leti =0; i < hexs.length; i++) {consthv = hexs[i]letnum = hv.charCodeAt() <58? +hv : ((code -97) +10) ...
varobj = {valueOf:function(){console.log('valueOf');return{}; },toString:function(){console.log('toString');return{}; }};String(obj)// TypeError: Cannot convert object to primitive value 下面是通过自定义toString方法,改变转换成字符串时的返回值的例子。
var intHex = "b4fb0acfc47086c1"; //The Input Hex Number. var int64 = new HexStringToInt64StringConverter(false).convert(intHex); //"false" is passed for UnSigned Conversion. console.log(int64); // output: 13041029033451620033 [/javascript] ...
string,8)// converts octal to int, eg. "20" => 163.玩转数字 除了上一节介绍的之外,这里有更多的处理数字的技巧0xFF; // Hex declaration, returns 255 020; // Octal declaration, returns 16 1e3; // Exponential, same as 1 * Math.pow(10,3), returns 1000 (1000).toExponential(); /...