将Array值推送到第一个Index

Question

var Config = {
   Windows: ['apple','mangi','lemon']
}

I have a condition and based on that i want to Push the banana value in my Array.

If(Condition Passed) {
      Config.Windows.unshift('banana');
      Windows: ['banana','apple','mangi','lemon']
      Config.Windows.reverse();
      // The way the Array elements are now reversed and First banana is accessed. 
    } else { 
      Config.Windows.reverse();     
} 

It does not do it... when i use the Config.Windows in my other function there is no banana Value... at all

for each(var item in Config.Windows.reverse()) {
 Ti.API.info(item);
 //This does not print banana

Answer 1

There are many ways in which you can push the value to the front of the array. Immediately, I can think of two ways:

• Create a new array, and replace the old one

   if (condition) { Config.Windows = ['banana'].join(Config.Windows) Config.Windows.reverse(); } else { Config.Windows.reverse(); } 

• Based on what you've said, it would make more sense to always reverse the array, then push your value:

   //initial array: ['apple','mangi','lemon'] Config.Windows.reverse(); //['lemon','mangi','apple'] if (condition) { //this will get the same result as your code Config.Windows.push("banana"); //['lemon','mangi','apple', 'banana'] } 

Answer 2

"The unshift is not supported by IE so if that's your browser it explains why it's not working. "

http://msdn.microsoft.com/en-us/library/ie/ezk94dwt(v=vs.94).aspx