I have an array in javascript. I have to iterate over it and concat the values to a variable and each value should be separated by comma.
This is my code:
var selected = new Array();
jQuery("input[type=checkbox]:checked").each(function() {
selected.push(jQuery(this).attr('id'));
});
selected.join(',')
see Array.join()
You need Array.join()
var a = new Array("Wind","Rain","Fire");
var myVar1 = a.join(); // assigns "Wind,Rain,Fire" to myVar1
var myVar2 = a.join(", "); // assigns "Wind, Rain, Fire" to myVar2
var myVar3 = a.join(" + "); // assigns "Wind + Rain + Fire" to myVar3
It wont work with arguments because the arguments object is not an array, although it looks like it. It has no join method:
function myFun(arr) {
return 'the list: ' + arr.join(",");
}
myFun(arrayObject);
will throw
TypeError: arr.join is not a function
because arr is not a jQuery object, just a regular JavaScript object.
$.each used by OP.Use the below code.
var namesArray = new Array("John", "Micheal", "Doe","Steve","Bob"); //array
var resultString = ""; // result variable
//iterate each item of array
for (var i = 0; i < namesArray.length; i++)
resultString += namesArray[i] + ",";
//remove the extra comma at the end, using a regex
resultString = resultString.replace(/,(?=[^,]*$)/, '')
alert(resultString);
Good Luck.
OR, rather than have to remove the extra comma, add the final element outside of the for loop :
for (var i = 0; i < namesArray.length-1; i++)
resultString += namesArray[i] + ", ";
resultString += namesArray[namesArray.length-1];
Yes, I know this is an old post :-)
