【在JSON没有数据解析的时候，如何自制报错 _本地储存】

在JSON没有数据解析的时候，如何自制报错
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本地储存
详细描述
截图
代码
//localStorage.clear(); 
var info;
var info2;
//var storage;
document.getElementById("button3").onclick=function(){
    window.location.href="proportion3.html";
}
a=true;
var kill=0;
z=1;
for(let c = 0; c<z;c++){
    
document.getElementsByClassName("killer-1")[c].onclick=function(){
    // document.getElementById("day").onclick=function() {

    //     if(a==true){
    //         document.getElementsByClassName("main")[c].style.height=0;
    //         a=false;
    //         }else{
    //             document.getElementsByClassName("main")[c].style.height="237px";
    //             a=true;
    //         }
    //     }
    if(kill==0) {
        var storage;
        var death1;
        kill++;
        window.location.href="vote.html";
        document.getElementsByClassName("killer-1")[c].style.backgroundColor="rgb(128,128,128)";
        
    }else{
        alert("请按顺序来");
    }
}

document.getElementsByClassName("killer-2")[c].onclick=function(){
    
    if(kill==1){
        alert("亡灵发表遗言");
        document.getElementsByClassName("killer-2")[c].style.backgroundColor="rgb(128,128,128)";
        
        kill++;
    }else{
        alert("请按顺序来");
    }
}
document.getElementsByClassName("killer-3")[c].onclick=function(){
    if(kill==2){
        alert("玩家依次发言");
        document.getElementsByClassName("killer-3")[c].style.backgroundColor="rgb(128,128,128)";
        kill++;
    }else{
        alert("请按顺序来");
    }
}
document.getElementsByClassName("killer-4")[c].onclick=function(){
    if(kill==3){
        document.getElementsByClassName("killer-4")[c].style.backgroundColor="rgb(128,128,128)";
       // window.location.href="vote.html";
        z++;
        localStorage.many=JSON.stringify(z);
        console.log(localStorage);
    }else{
        alert("请按顺序来");
    }
}

kill=JSON.parse(localStorage.kill);
if(kill!=0){
    var identify=JSON.parse(localStorage.info);
    var identify2=JSON.parse(localStorage.info2);
    //for()
    document.getElementsByClassName("people-information")[c].innerHTML =identify2+"被杀死，他的真实身份是"+identify;
    document.getElementsByClassName("killer-1")[c].style.backgroundColor="rgb(128,128,128)";
    console.log(identify2);
    }
    z=JSON.parse(localStorage.many);
    console.log(z);
if(z>1){
    clone2 = document.getElementsByClassName("main-inner")[c].cloneNode(true);
    document.getElementById("main-all").appendChild(clone2);
}
}
document.getElementById("button3").onclick=function(){
    window.location.href="daily.html";
}
document.getElementById("button2").onclick=function(){
    
      var r =confirm("是否结束游戏");  
      if(r == true){
         
        localStorage.clear();
        window.location.href="proportion.html";
      }
      else{
          return false;
      }                                                                
}
编辑于2024-05-13