ruiaa.github.io/js-base.js at master · ruiaa/ruiaa.github.io · GitHub

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function ulControl() {
    var sign = document.createElement("sign");
    sign.innerHTML = "++++++";
    $("ul").before(sign);
    $("ol").before(sign);
    $("pre").before(sign);
    $("sign").click(function () {
        $(this).next().toggle();
    });
    $("ul").dblclick(function () {
        $(this).toggle();
    });
    $("ol").dblclick(function () {
        $(this).toggle();
    });
    $("pre").dblclick(function () {
        $(this).toggle();
    });
    $("sign").next().hide();
    $("sign").css("display", "block");

}

function setCenter() {
    if (window.screen.width > window.screen.height) {
        $("body").width("50%");
        $("body").css({
            position: "absolute",
            left: $(window).width()/4
        });
    }
}


$(document).ready(function () {
    ulControl();
    setCenter();
});