JS operates TXT text to insert content at the specified location

This time I will bring you JS operations on TXT text to insert content at the specified position, and JS operations on TXT text to insert content at the specified position. take a look.

The example is as follows:

function insertAtCursor(myField, myValue) { 
 //IE 浏览器 
 if (document.selection) { 
  myField.focus(); 
  sel = document.selection.createRange(); 
  sel.text = myValue; 
  sel.select(); 
 } 
 //FireFox、Chrome等 
 else if (myField.selectionStart || myField.selectionStart == '0') { 
  var startPos = myField.selectionStart; 
  var endPos = myField.selectionEnd; 
  // 保存滚动条 
  var restoreTop = myField.scrollTop; 
  myField.value = myField.value.substring(0, startPos) + myValue + myField.value.substring(endPos, myField.value.length); 
  if (restoreTop > 0) { 
  myField.scrollTop = restoreTop; 
  } 
  myField.focus(); 
  myField.selectionStart = startPos + myValue.length; 
  myField.selectionEnd = startPos + myValue.length; 
 } else { 
  myField.value += myValue; 
  myField.focus(); 
 } 
} 
<textarea id="textarea" style="width: 386px; height: 260px"> 
</textarea> 
<input type="text" id="text" /> 
<input type="button" value="插入" onclick="insertAtCursor(document.getElementById('textarea'),

I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other php Chinese websites related articles!

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