localeCompare()

描述 (Description)

此方法接受字符串并将其与调用String对象进行比较。 如果两者相等，则返回0; 否则返回-1或1.如果作为参数传递的字符串根据本地浏览器语言排在第一位，则返回1; 如果调用字符串以排序顺序排在第一位，则返回-1。

语法 (Syntax)

下面给出了JavaScript的localeCompare()方法的语法。 我们可以使用CoffeeScript代码中的相同方法。

string.localeCompare( param )

例子 (Example)

以下示例演示了CoffeeScript代码中JavaScript的localeCompare（）方法的用法。 将此代码保存在名为string_localecompare.coffee的文件中

str1 = "This is beautiful string"
str2 = "This is beautiful string"
str3 = "abcd"
str4 = "xyz"
console.log "The value of str1:: "+str1
console.log "The value of str2:: "+str2
console.log "The value of str3:: "+str3
console.log "comparing the strings str1 and str2 ::"
index = str1.localeCompare str2
switch index
   when 0 then console.log "Both strings are equal"
   when 1 then console.log "Both strings are not equal and the string passed as parameter will be first in the sorted order."
   when -1 then console.log "Both strings are not equal and the calling string object will be first in the sorted order."
console.log "comparing the strings str1 and str3 ::"
index = str1.localeCompare str3
switch index
   when 0 then console.log "Both strings are equal"
   when 1 then console.log "Both strings are not equal and the string passed as parameter will be first in the sorted order."
   when -1 then console.log "Both strings are not equal and the calling string object will be first in the sorted order."
console.log "comparing the strings str1 and str4 ::"
index = str1.localeCompare str4
index = str1.localeCompare str3
switch index
   when 0 then console.log "Both strings are equal"
   when 1 then console.log "Both strings are not equal and the string passed as parameter will be first in the sorted order."
   when -1 then console.log "Both strings are not equal and the calling string object will be first in the sorted order."

打开command prompt并编译.coffee文件，如下所示。

c:\> coffee -c string_localecompare.coffee

在编译时，它为您提供以下JavaScript。

// Generated by CoffeeScript 1.10.0
(function() {
  var index, str1, str2, str3, str4;
  str1 = "This is beautiful string";
  str2 = "This is beautiful string";
  str3 = "abcd";
  str4 = "xyz";
  console.log("The value of str1:: " + str1);
  console.log("The value of str2:: " + str2);
  console.log("The value of str3:: " + str3);
  console.log("comparing the strings str1 and str2 ::");
  index = str1.localeCompare(str2);
  switch (index) {
    case 0:
      console.log("Both strings are equal");
      break;
    case 1:
      console.log("Both strings are not equal and the string passed as parameter will be first in the sorted order.");
      break;
    case -1:
      console.log("Both strings are not equal and the calling string object will be first in the sorted order.");
  }
  console.log("comparing the strings str1 and str3 ::");
  index = str1.localeCompare(str3);
  switch (index) {
    case 0:
      console.log("Both strings are equal");
      break;
    case 1:
      console.log("Both strings are not equal and the string passed as parameter will be first in the sorted order.");
      break;
    case -1:
      console.log("Both strings are not equal and the calling string object will be first in the sorted order.");
  }
  console.log("comparing the strings str1 and str4 ::");
  index = str1.localeCompare(str4);
  index = str1.localeCompare(str3);
  switch (index) {
    case 0:
      console.log("Both strings are equal");
      break;
    case 1:
      console.log("Both strings are not equal and the string passed as parameter will be first in the sorted order.");
      break;
    case -1:
      console.log("Both strings are not equal and the calling string object will be first in the sorted order.");
  }
}).call(this);

现在，再次打开command prompt并运行CoffeeScript文件，如下所示。

c:\> coffee string_localecompare.coffee 

执行时，CoffeeScript文件生成以下输出。

The value of str1:: This is beautiful string
The value of str2:: This is beautiful string
The value of str3:: abcd
comparing the strings str1 and str2 ::
Both strings are equal
comparing the strings str1 and str3 ::
Both strings are not equal and the string passed as parameter will be first in the sorted order.
comparing the strings str1 and str4 ::
Both strings are not equal and the string passed as parameter will be first in the sorted order.