How to realize the whereabouts of gold coins with jquery

With the continuous development of Internet technology, the interactive effects of websites are becoming more and more vivid and colorful. Among them, animation effects have become a part that cannot be ignored, which can bring a good visual experience to users. It is very important to implement different animation effects in the website so that users can experience an unusual interactive experience during use. As an excellent JavaScript library, the jQuery library can be used anytime and anywhere. Using jquery to achieve the gold coin falling animation effect is one of them.

1. Requirements Analysis

The design department requires that in the interface of a website, the effect of gold coins falling from top to bottom can be achieved. This effect will be triggered when the user performs certain operations. The realization of requirements is mainly reflected in the implementation details, reducing errors, increasing differentiated experience, and improving the interactivity of the website.

2. Technical implementation

The technical solution to achieve the gold coin falling effect requires the use of the dynamic effect processing method of the jQuery library, which is a commonly used Web front-end technology.

The following is a detailed introduction to jQuery's method of realizing the gold coin falling effect:

(1) First, create a div tag in the HTML page, set the style and position, and define the picture of the gold coin as Its background;

(2) To set the initial position and end position of the gold coin's fall, you need to define the distance, time and speed of the gold coin's downward movement, which can be achieved by setting the animate() method;

(3) Define the drop method and time of gold coins in the jQuery library, and set the effect of recycling gold coins after they are dropped in a loop;

(4) In order to make the gold coins drop more realistic, you can add some random drops Methods, such as lower offset, deflection angle, swing, etc.;

(5) Finally, implement the click event in the jQuery library to make the gold coins move. Through some special effects, the fun and interest of interaction are increased, so that users can add some small surprises and pleasure during use.

3. Code example

The following is a code example for jQuery to realize the whereabouts of gold coins:

//定义金币下落初始位置和终止位置
var coin = $("div.coin");
var coinTop = coin.offset().top;
var coinLeft = coin.offset().left;
var coinWidth = coin.width();
var coinHeight = coin.height();
var endTop = $("div.end").offset().top + $("div.end").height();
var endLeft = $("div.end").offset().left - coin.width();
var zIndex = 1000;

//定义金币掉落方式
function down(){
    var coinNew = $('<div class="coin"></div>');
    coinNew.css({"top":coinTop,"left":coinLeft,"z-index":zIndex++});
    $("body").append(coinNew);
    coinNew.animate({top:endTop,left:endLeft},500,function(){
        $(this).remove();
    });
}

//定义随机掉落方式
function range(min,max){
    return Math.floor(Math.random() * (max - min) + min);
}
function leftRange(){
    var maxLeft = $("body").width() - coinWidth;
    var minLeft = 0;
    return range(minLeft, maxLeft);
}
function rotateRange(){
    var maxDeg = 45;
    var minDeg = -45;
    return "rotateZ(" + range(minDeg ,maxDeg) + "deg)";
}

//实现点击事件，让金币运动起来
$(".start").click(function(){
    var set = setInterval(function(){
        down(); 
    },50);

    setTimeout(function(){
        clearInterval(set);
    },1500);

    setTimeout(function(){
        coin.css({
            "top": coinTop,
            "left": coinLeft,
            "transform":"rotateZ(0deg)"
        });
    },2000);

    for(var i = 0;i < 10;i++){ 
        var coinNew = $('<div class="coin"></div>');
        coinNew.css({
            "top": 0 - coinHeight * 2,
            "left": leftRange(),
            "transform": rotateRange(),
            "z-index": zIndex++
        });
        $("body").append(coinNew);
        coinNew.animate({top:endTop,left:endLeft},500,function(){
            $(this).remove();
        });
    }
});

4. Summary

Through the above steps, we can easily The animation effect of gold coins falling has been realized. Using this effect in the project can not only increase the interactivity of the website, but also bring a better experience to users, thus increasing confidence and satisfaction in the website products. Such a simple and practical jQuery library can provide us with more excellent web front-end solutions, which we should apply in future work.

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