Shuo/client/components/jquery/inputhistory.js

71 lines
1.2 KiB
JavaScript

/*!
* inputhistory
* https://github.com/erming/inputhistory
* v0.3.0
*/
(function($) {
$.inputhistory = {};
$.inputhistory.defaultOptions = {
history: [],
preventSubmit: false
};
$.fn.history = // Alias
$.fn.inputhistory = function(options) {
options = $.extend(
$.inputhistory.defaultOptions,
options
);
var self = this;
if (self.size() > 1) {
return self.each(function() {
$(this).history(options);
});
}
var history = options.history;
history.push("");
var i = 0;
self.on("keydown", function(e) {
var key = e.which;
switch (key) {
case 13: // Enter
if (self.val() != "") {
i = history.length;
history[i - 1] = self.val();
history.push("");
if (history[i - 1] == history[i - 2]) {
history.splice(-2, 1);
i--;
}
}
if (!options.preventSubmit) {
self.parents("form").eq(0).submit();
}
self.val("");
break;
case 38: // Up
case 40: // Down
history[i] = self.val();
if (key == 38 && i != 0) {
i--;
} else if (key == 40 && i < history.length - 1) {
i++;
}
self.val(history[i]);
break;
default:
return;
}
e.preventDefault();
});
return this;
}
})(jQuery);