HTML按钮通过JS实现选中和取消

 <script  type="text/javascript">
            let b1=0;//定义变量b
            
            function select1(){
                b1++;
                if (b1%2==0){
                    document.getElementById("gouxuan1").style.background = "url(image/queren1.png)";
                    document.getElementById("gouxuan1").style.backgroundRepeat="no-repeat";
                    document.getElementById("gouxuan1").style.backgroundSize="0px 0px";
                    document.getElementById("gouxuan1").style.backgroundPosition="center center";
                }else {
                   
                    document.getElementById("gouxuan1").style.background = "url(image/queren.png)";
                    document.getElementById("gouxuan1").style.backgroundRepeat="no-repeat";
                    document.getElementById("gouxuan1").style.backgroundSize="20px 20px";
                    document.getElementById("gouxuan1").style.backgroundPosition="center center";
                }
               
               
            }
 script>
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 <div name="T_div1" class="T_div1" onclick="select1()">
        <p class="p3">全国p>
        <img class="img2" src="image/icon-zbsmalt.png">                
        <p class="p1">11111p>
        <span>最高可贷<b>300b>万span>
        <p class="p2" style="color:#79AABB">利率低   纯信用 可循环p>
div>
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