JavaScript中把數字轉換為字串的程式碼_基礎知識

1：把數字轉換成字串的方法

複製程式碼 程式碼

複製程式碼

程式碼

     var string_value = String(number);
     string_value = number.toString();

      var n = 17;

      binary_string = n.toString(2);           " n.toString(8);        //Evaluates to "021"
      hex_string = "0x" n.toString(16);      //Evaluates to "0x11"

      var n = 123456.789;
      n.toFixed(0);             Fixed(2);                  //"123456.79"
      n.toExponential(1);   "1.2e 5"
      n.toExponential(3);      //"1.235e 5"
      n.toPrecision(4)

      n.toPrecision(4)       n.toPrecision(7);         / /"123456.8"