換行符在javascript中被忽略多行文本框

Question

我在asp.net表單上有一個多行文本框，並且我正在調用過去事件的以下javascript函數。

如果我粘貼任何數據，則會忽略新行。

我不知道它是否與JavaScript功能有關。我可以在內部文本中看到'/ n'，但不知何故它沒有被正確渲染。 「你好\ nworld」正在呈現「你好世界」

function handlepaste(textbox, e, label, len) { 
    var savedcontent = textbox.innerHTML; 
    if (e && e.clipboardData && e.clipboardData.getData) {// Webkit - get data from clipboard, put into editdiv, cleanup, then cancel event 
     if (/text\/html/.test(e.clipboardData.types)) { 
      textbox.innerHTML = e.clipboardData.getData('text/html'); 
     } 
     else if (/text\/plain/.test(e.clipboardData.types)) { 
      textbox.innerHTML = e.clipboardData.getData('text/plain'); 
     } 
     else { 
      textbox.innerHTML = ""; 
     } 
     waitforpastedata(textbox, savedcontent); 
     if (e.preventDefault) { 
      e.stopPropagation(); 
      e.preventDefault(); 
     } 
     return false; 
    } 
    else {// Everything else - empty editdiv and allow browser to paste content into it, then cleanup 
     textbox.innerHTML = ""; 
     waitforpastedata(textbox, savedcontent, label, len); 
     return true; 
    } 
} 

function waitforpastedata(elem, savedcontent, label, len) { 
    if (elem.childNodes && elem.childNodes.length > 0) { 
     processpaste(elem, savedcontent, label, len); 
    } 
    else { 
     that = { 
      e: elem, 
      s: savedcontent 
     } 
     that.callself = function() { 
      waitforpastedata(that.e, that.s, label, len) 
     } 
     setTimeout(that.callself, 20); 
    } 
} 

function processpaste(textbox, savedcontent, label, len) { 
    pasteddata = textbox.innerHTML; 

    if (savedcontent.length > 0) { 
     textbox.innerHTML = savedcontent + pasteddata ; 
    } 

    if (pasteddata.length > len) { 
     textbox.value = textbox.value.substring(0, len); 
     document.getElementById(label).className = "red-text"; 
     document.getElementById(label).innerHTML = 'You are trying to type too much information '; 
    } 
    else { 
     document.getElementById(label).className = "grey-text"; 
     document.getElementById(label).innerHTML = textbox.value.length.toString() + ' of ' + len + ' chars'; 
    } 
} 

Answer 1

很可能是因爲HTML不會按照您期望的方式呈現新行。改爲嘗試<br>。