Simple analysis on the value and setting value of jquery operation Select Control _jquery

1. Cascade Select operation, the value of the last select changes with the previous select value

$ (". Select_a"). Change (function () {
   $ (". Select_b"). empty ();//Empty after a select
   var option = $ ("<option>"). Val (1). Text (' xxx ')://Re-assign option
   $ (". Select_b") by actual business requirements. Append (option)
;  

2. Get the Select Check value value

$(".select").val();

3. Gets the text of the Select selected item

$(".select").find("option:selected").text();

4. Set Select to select the corresponding value items, corresponding text text items

$ (". Select"). val (' xxx ');
$ (". Select"). Find ("option[text= ' xxx ']"). Prop (' selected ', true);

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