Every time you select the operation, always in the online turned down, too cumbersome, the summary of their own here.
Like <select class= "selector" ></select>
1, set the value of "all" item selected
Copy Code code as follows:
$ (". Selector"). Val ("All");
2, set the text to "all" item selected
Copy Code code as follows:
$ (". Selector"). Find ("option[text= ' All ']"). attr ("selected", true);
Here is a use of brackets, preceded by an equal sign in brackets, with the attribute name, without quotes. In many cases, the use of brackets can make logic simple.
3, get the value of the currently selected item
Copy Code code as follows:
$ (". Selector"). Val ();
4, get the text of the currently selected item
Copy Code code as follows:
$ (". Selector"). Find ("option:selected"). Text ();
Using a colon, mastering its usage and extrapolate it makes the code concise.
Many times the cascade of select is used, that is, the value of the second select changes with the value selected by the first select. This is very simple in jquery.
Such as:
Copy Code code as follows:
$ (". Selector1"). Change (function () {
Empty the second one first.
$ (". Selector2"). empty ();
In practical applications, the option here is generally to generate multiple loops
var option = $ ("<option>"). Val (1). Text ("Pxx");
$ (". Selector2"). Append (option);
});
