Compile String. format () of javascript and Jquery ();

In javascript and Jquery, there seems to be no String. format (); this function, so we are very hard when splicing strings, for fear of making mistakes and chaos, so we can write a function instead.

String. format = function () {if (arguments. length = 0) return null; var str = arguments [0]; for (var I = 1; I <arguments. length; I ++) {var re = new RegExp ('\ {' + (I-1) + '\}', 'G'); str = str. replace (re, arguments [I]);} return str ;}; // var a = "I like to eat {0} and {1 }, but the most favorite is {0}, and occasionally buy {2} "; // alert (String. format (a, "apple", "banana", "xiangli"); // result: I like to eat apples and bananas, but I like apples most, occasionally buy Pear

It starts with 0 digits.

We recommend that you write these items into a js file and call them each time.