JavaScript join() 方法
/**
* function join(seperator)
* @param {String} seperator
* @returns {Array}
* @memberOf Array
* @see Array
* @since Standard ECMA-262 3rd. Edition
* @since Level 2 Document Object Model Core Definition.
* @see http://www.w3.org/TR/2000/REC-DOM-Level-2-Core-20001113/ecma-script-binding.html
*/
Array.prototype.join = function(seperator){return [];};
<html>
<body>
<script type="text/javascript">
var arr = new Array(3);
arr[0] = "George"
arr[1] = "John"
arr[2] = "Thomas"
document.write(arr.join());
document.write("<br />");
document.write(arr.join("."));
</script>
</body>
</html>
查看结果:
George,John,Thomas George.John.Thomas
var newText = "<span>" + $("p").text().split(" ").join("</span> <span>") + "</span>";
This will put span tags around all the words in you paragraphs, turning
<p>Test is a demo.</p>
into
<p><span>Test</span> <span>is</span> <span>a</span> <span>demo.</span></p>
var arr = [ "a", "b", "c", "d", "e" ]
$("div").text(arr.join(", "));
arr = jQuery.map(arr, function(n, i){
return (n.toUpperCase() + i);
});
$("p").text(arr.join(", "));
arr = jQuery.map(arr, function (a) { return a + a; });
$("span").text(arr.join(", "));
1./*
2.JScript does not default the separator to “,” if the separator value is undefined.
3.*/
4. var array = [1, 2];
5. alert(array.join());
6. alert(array.join(undefined));
7. alert(array.join('-'));
8./*
9.Output:
10. IE: 1,2 1undefined2 1-2
11. FF: 1,2 1,2 1-2
12. Opera: same as FF
13. Safari: same as FF
14.*/