HTML代码
<textarea id="test"></textarea>
<button id="button_test">Ok</button>
使用Javascript
$(document).ready(function()
{
$("#test").val("123e2oierhqwpoiefdhqwopidfhjcospid");
});
$("#button_test").on("click",function()
{
var as=document.getElementById("test").value;
console.log(as);
});
我们可以使用val和split函数逐行获取textarea的值.但
是否有可能从textarea逐行获取非常长的单词?.在示例中,我需要将输出作为123e2oierhqwpoiefdhqwo和pidfhjcospid作为单独的值.
Jsfiddle链接here
最佳答案 你可以使用这样的东西.这会将换行符插入到textarea中.
积分:https://stackoverflow.com/a/4722395/4645728
$(document).ready(function() {
$("#test").val("123e2oierhqwpoiefdhqwopidfhjcospid");
});
$("#button_test").on("click", function() {
ApplyLineBreaks("test");
var as = document.getElementById("test").value;
console.log(as);
});
//https://stackoverflow.com/a/4722395/4645728
function ApplyLineBreaks(strTextAreaId) {
var oTextarea = document.getElementById(strTextAreaId);
if (oTextarea.wrap) {
oTextarea.setAttribute("wrap", "off");
} else {
oTextarea.setAttribute("wrap", "off");
var newArea = oTextarea.cloneNode(true);
newArea.value = oTextarea.value;
oTextarea.parentNode.replaceChild(newArea, oTextarea);
oTextarea = newArea;
}
var strRawValue = oTextarea.value;
oTextarea.value = "";
var nEmptyWidth = oTextarea.scrollWidth;
var nLastWrappingIndex = -1;
for (var i = 0; i < strRawValue.length; i++) {
var curChar = strRawValue.charAt(i);
if (curChar == ' ' || curChar == '-' || curChar == '+')
nLastWrappingIndex = i;
oTextarea.value += curChar;
if (oTextarea.scrollWidth > nEmptyWidth) {
var buffer = "";
if (nLastWrappingIndex >= 0) {
for (var j = nLastWrappingIndex + 1; j < i; j++)
buffer += strRawValue.charAt(j);
nLastWrappingIndex = -1;
}
buffer += curChar;
oTextarea.value = oTextarea.value.substr(0, oTextarea.value.length - buffer.length);
oTextarea.value += "\n" + buffer;
}
}
oTextarea.setAttribute("wrap", "");
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<textarea id="test"></textarea>
<button id="button_test">Ok</button>