<div class="starBox"></div>

<script type="text/javascript">
//步骤条控件
function StepContentFn(tag, stepContent, status) {
    var descriptionValue = stepContent.indexOf(",") == -1 ? $(stepContent).val() : stepContent;
    if (descriptionValue) {
        var desplit = descriptionValue.split(",");
        var temp = -1;
        var isActiveValue = "is_finish"
        var applyStatus = $(status).val() ? $(status).val() : status;
        var mainStep = "<div class='control_processSteps'>";
        for (let i = 0; i < desplit.length; i++) {
            var desplitItem = desplit[i].split(":");
            if ($.trim(desplitItem[0]) == $.trim(applyStatus)) {
                temp = i;
            }
            mainStep += "<div class='processStep'><div class='step_head'><div class='step_line'></div><div class='step_icon_inner'>" + (i + 1) + "</div></div><div class='step_main'><div class='step_title'>" + desplitItem[0] + "</div><div class='step_description'><div>审批人：" + desplitItem[1] + "</div><div>审批时间：" + desplitItem[2] + "</div><div>审批意见：" + desplitItem[3] + "</div></div></div></div>"
        }
        mainStep += "</div>"
        $(tag).prepend(mainStep);

        for (i = 0; i < desplit.length; i++) {
            if (temp >= i) {
                isActiveValue = "is_finish";
                $(".processStep").eq(i).find(".step_line").addClass("step_line_active");
            } else if (temp == i - 1) {
                isActiveValue = "is_process";
            } else if (temp < i - 1) {
                isActiveValue = "is_wait";
            }
            $(".processStep").eq(i).find(".step_head").addClass(isActiveValue);
            $(".processStep").eq(i).find(".step_main>div").addClass(isActiveValue);
        }
    }
}

// 这里设置默认初始步骤
StepContentFn('.starBox', "已申请:杨博:2020/2/3:已申请审批意见, 已立项:杨博:2020/5/5:已立项审批意见, 实施中:张三:2020/5/9:实施中意见, 等待中:杨博:2020/6/6:等待中审批意见,已完结:杨博:2020/6/6:已完结审批意见,zzz:涂磊:2023/6/6:new添加", '等待中');
</script>

                     @charset "utf-8";
.starBox{margin:100px auto;width:630px;}
.control_processSteps {
    display: flex;
    white-space: nowrap;
}

.processStep {
    display: inline-block;
    position: relative;
    flex-shrink: 1;
    flex-basis: 50%;
    margin-right: 0px;
}

.step_main {
    position: relative;
    white-space: normal;
    text-align: left;
}
/* 线条 */

.step_line {
    position: absolute;
    height: 4px;
    top: 10px;
    left: 0;
    right: 0;
    border-color: inherit;
    background-color: #c0c4cc;
}

.processStep:last-of-type .step_line {
    display: none;
}

.step_icon_inner {
    position: relative;
    z-index: 1;
    display: inline-flex;
    justify-content: center;
    width: 24px;
    height: 24px;
    box-sizing: border-box;
    border: 2px solid;
    border-radius: 50%;
    text-align: center;
    font-weight: 700;
    align-items: center;
    font-size: 14px;
    background: #fff;
}

.step_title {
    font-size: 16px;
    line-height: 38px;
    cursor: pointer;
}

.step_description {
    display: none;
    position: absolute;
    margin-top: -5px;
    font-size: 12px;
    line-height: 20px;
    font-weight: 400;
    background: #fff;
    box-shadow: 0px 4px 4px #ccc;
    border-radius: 5px;
    padding: 10px;
    z-index: 99;
}

.step_line_active {
    background-color: #409eff;
}
/* 已完结状态 */

.is_finish {
    color: #409eff;
    border-color: #409eff;
}

.is_process {
    color: #303133;
    border-color: #303133;
}

.is_wait {
    color: #c0c4cc;
    border-color: #c0c4cc;
}

.step_main:hover .step_title+.is_finish {
    display: inline-block;
}

<div id="bg">
  <canvas></canvas>
  <canvas></canvas>
  <canvas></canvas>
</div>

<script>
(function($){
    var canvas = $('#bg').children('canvas'),
        background = canvas[0],
        foreground1 = canvas[1],
        foreground2 = canvas[2],
        config = {
            circle: {
                amount: 18,
                layer: 3,
                color: [157, 97, 207],
                alpha: 0.3
            },
            line: {
                amount: 12,
                layer: 3,
                color: [255, 255, 255],
                alpha: 0.3
            },
            speed: 0.5,
            angle: 20
        };

    if (background.getContext){
        var bctx = background.getContext('2d'),
            fctx1 = foreground1.getContext('2d'),
            fctx2 = foreground2.getContext('2d'),
            M = window.Math, // Cached Math
            degree = config.angle/360*M.PI*2,
            circles = [],
            lines = [],
            wWidth, wHeight, timer;
        
        requestAnimationFrame = window.requestAnimationFrame || 
            window.mozRequestAnimationFrame ||
            window.webkitRequestAnimationFrame ||
            window.msRequestAnimationFrame ||
            window.oRequestAnimationFrame ||
            function(callback, element) { setTimeout(callback, 1000 / 60); };

        cancelAnimationFrame = window.cancelAnimationFrame ||
            window.mozCancelAnimationFrame ||
            window.webkitCancelAnimationFrame ||
            window.msCancelAnimationFrame ||
            window.oCancelAnimationFrame ||
            clearTimeout;

        var setCanvasHeight = function(){
            wWidth = $(window).width();
            wHeight = $(window).height(),

            canvas.each(function(){
                this.width = wWidth;
                this.height = wHeight;
            });
        };

        var drawCircle = function(x, y, radius, color, alpha){
            var gradient = fctx1.createRadialGradient(x, y, radius, x, y, 0);
            gradient.addColorStop(0, 'rgba('+color[0]+','+color[1]+','+color[2]+','+alpha+')');
            gradient.addColorStop(1, 'rgba('+color[0]+','+color[1]+','+color[2]+','+(alpha-0.1)+')');

            fctx1.beginPath();
            fctx1.arc(x, y, radius, 0, M.PI*2, true);
            fctx1.fillStyle = gradient;
            fctx1.fill();
        };

        var drawLine = function(x, y, width, color, alpha){
            var endX = x+M.sin(degree)*width,
                endY = y-M.cos(degree)*width,
                gradient = fctx2.createLinearGradient(x, y, endX, endY);
            gradient.addColorStop(0, 'rgba('+color[0]+','+color[1]+','+color[2]+','+alpha+')');
            gradient.addColorStop(1, 'rgba('+color[0]+','+color[1]+','+color[2]+','+(alpha-0.1)+')');

            fctx2.beginPath();
            fctx2.moveTo(x, y);
            fctx2.lineTo(endX, endY);
            fctx2.lineWidth = 3;
            fctx2.lineCap = 'round';
            fctx2.strokeStyle = gradient;
            fctx2.stroke();
        };

        var drawBack = function(){
            bctx.clearRect(0, 0, wWidth, wHeight);

            var gradient = [];
            
            gradient[0] = bctx.createRadialGradient(wWidth*0.3, wHeight*0.1, 0, wWidth*0.3, wHeight*0.1, wWidth*0.9);
            gradient[0].addColorStop(0, 'rgb(0, 26, 77)');
            gradient[0].addColorStop(1, 'transparent');

            bctx.translate(wWidth, 0);
            bctx.scale(-1,1);
            bctx.beginPath();
            bctx.fillStyle = gradient[0];
            bctx.fillRect(0, 0, wWidth, wHeight);

            gradient[1] = bctx.createRadialGradient(wWidth*0.1, wHeight*0.1, 0, wWidth*0.3, wHeight*0.1, wWidth);
            gradient[1].addColorStop(0, 'rgb(0, 150, 240)');
            gradient[1].addColorStop(0.8, 'transparent');

            bctx.translate(wWidth, 0);
            bctx.scale(-1,1);
            bctx.beginPath();
            bctx.fillStyle = gradient[1];
            bctx.fillRect(0, 0, wWidth, wHeight);

            gradient[2] = bctx.createRadialGradient(wWidth*0.1, wHeight*0.5, 0, wWidth*0.1, wHeight*0.5, wWidth*0.5);
            gradient[2].addColorStop(0, 'rgb(40, 20, 105)');
            gradient[2].addColorStop(1, 'transparent');

            bctx.beginPath();
            bctx.fillStyle = gradient[2];
            bctx.fillRect(0, 0, wWidth, wHeight);
        };

        var animate = function(){
            var sin = M.sin(degree),
                cos = M.cos(degree);

            if (config.circle.amount > 0 && config.circle.layer > 0){
                fctx1.clearRect(0, 0, wWidth, wHeight);
                for (var i=0, len = circles.length; i<len; i++){
                    var item = circles[i],
                        x = item.x,
                        y = item.y,
                        radius = item.radius,
                        speed = item.speed;

                    if (x > wWidth + radius){
                        x = -radius;
                    } else if (x < -radius){
                        x = wWidth + radius
                    } else {
                        x += sin*speed;
                    }

                    if (y > wHeight + radius){
                        y = -radius;
                    } else if (y < -radius){
                        y = wHeight + radius;
                    } else {
                        y -= cos*speed;
                    }

                    item.x = x;
                    item.y = y;
                    drawCircle(x, y, radius, item.color, item.alpha);
                }
            }

            if (config.line.amount > 0 && config.line.layer > 0){
                fctx2.clearRect(0, 0, wWidth, wHeight);
                for (var j=0, len = lines.length; j<len; j++){
                    var item = lines[j],
                        x = item.x,
                        y = item.y,
                        width = item.width,
                        speed = item.speed;

                    if (x > wWidth + width * sin){
                        x = -width * sin;
                    } else if (x < -width * sin){
                        x = wWidth + width * sin;
                    } else {
                        x += sin*speed;
                    }

                    if (y > wHeight + width * cos){
                        y = -width * cos;
                    } else if (y < -width * cos){
                        y = wHeight + width * cos;
                    } else {
                        y -= cos*speed;
                    }
                    
                    item.x = x;
                    item.y = y;
                    drawLine(x, y, width, item.color, item.alpha);
                }
            }

            timer = requestAnimationFrame(animate);
        };

        var createItem = function(){
            circles = [];
            lines = [];

            if (config.circle.amount > 0 && config.circle.layer > 0){
                for (var i=0; i<config.circle.amount/config.circle.layer; i++){
                    for (var j=0; j<config.circle.layer; j++){
                        circles.push({
                            x: M.random() * wWidth,
                            y: M.random() * wHeight,
                            radius: M.random()*(20+j*5)+(20+j*5),
                            color: config.circle.color,
                            alpha: M.random()*0.2+(config.circle.alpha-j*0.1),
                            speed: config.speed*(1+j*0.5)
                        });
                    }
                }
            }

            if (config.line.amount > 0 && config.line.layer > 0){
                for (var m=0; m<config.line.amount/config.line.layer; m++){
                    for (var n=0; n<config.line.layer; n++){
                        lines.push({
                            x: M.random() * wWidth,
                            y: M.random() * wHeight,
                            width: M.random()*(20+n*5)+(20+n*5),
                            color: config.line.color,
                            alpha: M.random()*0.2+(config.line.alpha-n*0.1),
                            speed: config.speed*(1+n*0.5)
                        });
                    }
                }
            }

            cancelAnimationFrame(timer);
            timer = requestAnimationFrame(animate);
            drawBack();
        };

        $(document).ready(function(){
            setCanvasHeight();
            createItem();
        });
        $(window).resize(function(){
            setCanvasHeight();
            createItem();
        });
    }
})(jQuery);</script>
<style>
#bg {
    position:fixed;
    top:0;
    left:0;
    width:100%;
    height:100%;
    z-index:-1;
}
#bg canvas {
    position:absolute;
    top:0;
    left:0;
    width:100%;
    height:100%;
}
</style>

<div class="container">
    <div class="form-group  border-bottom-1">
        <div class="modal-steps ">
            <div class="step">
                <div class="dot"></div>
                <label class="label">第一步</label>
            </div>
            <div class="step">
                <div class="dot"></div>
                <label class="label">第二部</label>
            </div>
        
            <div class="step">
                <div class="dot"></div>
                <label class="label">第三步</label>
            </div>
            <div class="step">
                <div class="dot"></div>
                <label class="label">完成</label>
            </div>
        </div>
    </div>
    <div class="form-group">
        <div class="step-main">
            <div class="step-slide">
                内容1
            </div>
            <div class="step-slide">
                内容2
            </div>
            <div class="step-slide">
                内容3
            </div>
            <div class="step-slide">
                内容4
            </div>
        </div>
    </div>
    <div class="form-group ">
        <div class="step-controlbar col-sm-12 d-flex justify-content-between">
            <button type="button" class="btn btn-light unVisible" id="pre">上一步</button>
              <button type="button" class="btn btn-light" id="next">下一步</button>
        </div>
    </div>
</div>
<script type="text/javascript" >

$(function(){

    step_();
})
function step_(){
    let howLong=$(".modal-steps ").actual("width")/3;
    console.log(howLong)
    let current=0;
    $('.step-main').css("height",getMaxHeight());
    $('.step-slide').eq(current).fadeIn(500)
    $('.step').eq(current).addClass("current");

    let preventResponse=false;
    $('#next').click(function(){
        if(!preventResponse){
            if(current!=($('.step-slide').length-1)){
        
                $('.step').eq(current).addClass("completed");
            
                current++;
                
                let timeOut=null;
                clearTimeout(timeOut);
                timeOut=setTimeout(function(){
                    console.log(current)
                    $('.step').eq(current).addClass("current");
                },200);

                console.log(current);
                $('.step-slide').eq(current).stop().fadeIn(500).siblings().fadeOut(500);
                if(current==($('.step-slide').length-1)){
                    $(this).html("完成");
                }else{
                    $(this).html("下一步");
                }
                if(current==0){
                    $('#pre').addClass('unVisible')
                }else{
                    $('#pre').removeClass('unVisible')
                }
            }
            
            // $(".step").eq(0).css("width",current*howLong);
            preventResponse=true;
            setTimeout(function(){
                preventResponse=false;
            },500);
        }
    })
    $('#pre').click(function(){
        if(!preventResponse){
            if(current!=0){

                $('.step').eq(current).removeClass("current");
                current--;
                let timeOut=null;
                clearTimeout(timeOut);
                timeOut=setTimeout(function(){
                    $('.step').eq(current).removeClass("completed");
                },200);
                $('.step-slide').eq(current).stop().fadeIn(500).siblings().fadeOut(500);
                if(current==($('.step-slide').length-1)){
                    $("#next").html("完成");
                }else{
                    $("#next").html("下一步");
                }
                if(current==0){
                    $(this).addClass('unVisible')
                }else{
                    $(this).removeClass('unVisible')
                }
            }
            
           
            preventResponse=true;
            setTimeout(function(){
                preventResponse=false;
            },500);
        }
    })
}

function getMaxHeight(){
    let MaxHeight=0;
    $('.step-slide').each(function(){
        let actualHeight=parseFloat($(this).actual('outerHeight'));
        if(actualHeight>MaxHeight){
            MaxHeight=actualHeight
        }
    })
    // console.log(MaxHeight)
    return MaxHeight;
}
</script>

.container{width: 600px;margin-top: 100px;}
.step-slide{
    text-align: center;
    font-weight: bold;
}
.modal-steps{
    display: flex;
}

.dot:before {
    content: '';
    position: absolute;
    top: -1px;
    left: -1px;
    width: 20px;
    height: 20px;
    -webkit-transform: scale(.75);
    -ms-transform: scale(.75);
    transform: scale(.75);
    -webkit-border-radius: 20px;
    border-radius: 20px;
    background-color: #EAEAEA;

}

.dot {
    background-color: #EAEAEA;
    height: 20px;
    width: 20px;
    -webkit-border-radius: 20px;
    border-radius: 20px;
    display: inline-block;
    position: relative;
    top: .125em;
    z-index: 2;
    margin: auto;
    border: 1px solid;
    border-color: #EAEAEA;

}
.step::before {
    position: absolute;
    border: 1px solid;
    height: 1px;
    display: block;
    z-index: 1;
    top: 11px;
    content: '';
    border-color: #EAEAEA;
}
/* .step::before {
  
} */
.step::before{
    width:100%;
    z-index: -1;
}
.step:last-child::before{
    width: 50% !important;
}
.step:nth-child(2)::before{
    width: 100%;
}
.step::after{
    width: 0%;
}
.completed .dot::before{
    /* width: 200%; */
    background-color: #39c0ba;


}
.current .dot{
    border-color:#39c0ba;
}
.step::after{
    position: absolute;
    /* border: 1px solid; */
    height: 2px;
    display: block;
    z-index: 1;
    top: 11px;
    content: '';
    /* border-color: #EAEAEA; */
    background-color: #39c0ba;
}
.step::after{
    /* width: 50%; */
    left: 0;
    transition: 0.2s linear;
    width: 0%;
}
.step:first-child::before,.step:first-child::after{
    /* width: 50%!important; */
    left: unset;
    right: unset;
    -webkit-transform: translateX(51%);
    -ms-transform: translateX(51%);
    transform: translateX(51%);

}
.step:last-child::before,.step:last-child::after{
    /* width: 50%!important; */
    left: 0;
}
.step-title{
    text-align: center;
    -webkit-box-flex: 1;
    -webkit-flex: 1 0 auto;
    -ms-flex: 1 0 auto;
    flex: 1 0 auto;
    font-size: .8rem;
}
.step {
    width: 100%;
    position: relative;
    display: -webkit-box;
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
    -webkit-flex-wrap: wrap;
    -ms-flex-wrap: wrap;
    flex-wrap: wrap;
    /* -webkit-box-pack: center; */
    -webkit-justify-content: center;
    -ms-flex-pack: center;
    justify-content: center;
}

.label {
    font-size: 12px;
    display: block;
    margin: .5em 0;
    text-align: center;
    -webkit-box-flex: 0;
    -webkit-flex: 0 0 100%;
    -ms-flex: 0 0 100%;
    flex: 0 0 100%;
    box-sizing: border-box;
}
.step-main>.step-slide{
    display: none;
}
.step-main{
    width: 100%;
    position: relative;
}
.step-slide{
    position: absolute;
    width: 100%;
}
/* .step-slide{
    height: 400px;
} */
.modal-steps .step.completed::after{
    width: 100% !important;
}   
.modal-steps .step.current::after{
    width: 50%;
}   
.step.current:first-child:after{
    width: 0%;
}
.step.completed:first-child:after{
    width: 50% !important;
}

.unVisible{
    opacity: 0;
}