I have one form in with textarea:
<textarea wrap="physical" cols="28" rows="5" name="<portlet:namespace />tsSummary" onKeyDown="CountRight(this.form.<portlet:namespace />tsSummary,this.form.right,200);getElementById('char_count_summary').innerHTML = this.value.length" onKeyUp="CountRight(this.form.<portlet:namespace />tsSummary,this.form.right,200);getElementById('char_count_summary').innerHTML = this.value.length" onfocus="getElementById('char_count_summary').innerHTML = this.value.length">
<c:choose><c:when test="<%=Validator.isNotNull(dMang)%>"><%=dMang.getTsSummary()%></c:when><c:otherwise><%=""%></c:otherwise></c:choose>
</textarea>
<b><span id=char_count_summary></span></b>
<input readonly type="hidden" name="right" size=3 maxlength=3>
Javascript for limiting count to 200:
function CountRight(field, count, max) {
// if the length of the string in the input field is greater than the max value, trim it
if (field.value.length > max)
field.value = field.value.substring(0, max);
else
// calculate the remaining characters
count.value = max - field.value.length;
}
But, I get extra leading white spaces whenever i open the form and it takes extra characters showing count more than 200. How can I remove extra blank spaces before content?
删除源中<textarea …>
和<c:choose>
之间的空格
function trim(value) {
value = value.replace(/^\s+/,'');
value = value.replace(/\s+$/,'');
return value;
}
this removes any whitespace on the start or end of a string. You could do something like
field.value = trim(field.value);
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