有些JavaScript不起作用

some javascript doesn't work

本文关键字:不起作用 JavaScript 有些      更新时间:2023-09-26

my el6.href 和 el7.href 不起作用,

如果我将 el6.href 和 el7.href 放在 el4.href 和 el5.href 的顶部,它可以工作,但结果是 el4。 和 el5 不起作用,有什么提示吗?

脚本

el4 = document.getElementById("edit_href");
el5 = document.getElementById("delete_href");   
el6 = document.getElementById("approve_href");
el7 = document.getElementById("deny_href");

el4.href = "../article/submit-article.php?";        
el5.href = "myaccount.php?mydraft=true&delete=true";
el6.href = "myaccount.php?rec_approved=true&approve=true";
el7.href = "myaccount.php?rec_denied&deny=true";

.php

if(isset($_GET['mydraft']))
{echo"
    < href=''  id=edit_href >edit</a>
    <a href='' id=delete_href >delete</a>";
}
if ( (isset($_GET['rec_waiting'])) || (isset($_GET['rec_denied'])) )
    {echo"  
        <a href='' id=approve_href  >approve</a>";
        if(!isset($_GET['rec_denied']))
        {echo"  
        <a href='' id=deny_href >deny </a>";
        }
    }   

Javsscript 代码不需要 null 判断。因为某些元素是 null。看这个。

    el4 = document.getElementById("edit_href");
    el5 = document.getElementById("delete_href");   
    el6 = document.getElementById("approve_href");
    el7 = document.getElementById("deny_href");

        if(el4!=null){
        el4.href = "../article/submit-article.php?";        
        el5.href = "myaccount.php?mydraft=true&delete=true";
    }
    if(el6!=null){
    el6.href = "myaccount.php?rec_approved=true&approve=true";
}
    if(el7!=null)
{
    el7.href = "myaccount.php?rec_denied&deny=true";
}

HTML 文档是从上到下执行的。如果在 javascript 标记中间出现错误。所以之后的代码不会被执行

你必须

纠正你的php代码

if(isset($_GET['mydraft'])) 
{
    echo " 
    <a href='"#'"  id='"edit_href'">edit</a> 
    <a href='"#'" id='"delete_href'" >delete</a>"; 
} 
if (isset($_GET['rec_waiting']) || isset($_GET['rec_denied'])) 
{
    echo "   
    <a href='"#'" id='"approve_href'">approve</a>"; 
    if(!isset($_GET['rec_denied'])) 
    {
        echo "   
        <a href='"#'" id='"deny_href'">deny</a>"; 
    }
}

.JS

function el(objID) {
    return document.getElementById(objID);
}
if(el('edit_href'))
    el('edit_href').href = "your_url.php";

其他网址相同