错误的变化形式行动

Question

我改变形式行动：

window.onload = function() { 
    document.getElementById('pdf').onclick = addExportEvent; 
    document.getElementById('xls').onclick = addExportEvent; 
    document.getElementById('xml').onclick = addExportEvent; 
    document.getElementById('csv').onclick = addExportEvent; 
} 

function addExportEvent() { 
    data = grid.getAllGridData(); 
    document.getElementById('dados').setAttribute('value', encodeURIComponent(JSON.stringify(data))); 

    formulario = document.getElementById('formulario'); // Line 55! 
    formulario.action = 'php/' + this.id + '.php'; 
    formulario.submit(); 

    return false; 
} 

不过，这并不与Internet Explorer工作。它返回以下错误：

Message: The object doesn't support the property or method. 
Line: 55 
Character: 2 
Code: 0 
URI: http://www.site.com/javascript/scripts.js 

Answer 1

我认为安迪E的头评论击中了它，好，头。你正在分配正确的元素，但没有声明它使用变种，这使IE插件和窒息和各种不好的东西。其他浏览器处理这一点很好。所以，你想，而不是访问它声明，这意味着它永远不会id的值的formulario：formulario

function addExportEvent() { 
    var data = grid.getAllGridData(); 
    document.getElementById('dados').setAttribute('value', encodeURIComponent(JSON.stringify(data))); 

    var formulario = document.getElementById('formulario'); // Line 55! 
    formulario.action = 'php/' + this.id + '.php'; 
    formulario.submit(); 

    return false; 
}