1、可以使用textarea进行显示;
2、首先进行html编码后再显示:
使用下面的函数html_encode对html字符串进行编码然后显示:
function html_encode(str){
var s = ""
if (str.length == 0) return ""
s = str.replace(/&/g, "&gt")
s = s.replace(/</g, "&lt")
s = s.replace(/>/g, "&gt")
s = s.replace(/ /g, "&nbsp")
s = s.replace(/\'/g, "&#39")
s = s.replace(/\"/g, "&quot")
s = s.replace(/\n/g, "<br>")
return s
}
function html_decode(str)
{
var s = ""
if (str.length == 0) return ""
s = str.replace(/&gt/g, "&")
s = s.replace(/&lt/g, "<")
s = s.replace(/&gt/g, ">")
s = s.replace(/&nbsp/g, " ")
s = s.replace(/&#39/g, "\'")
s = s.replace(/&quot/g, "\"")
s = s.replace(/<br>/g, "\n")
return s
}
1、jQuery使用正则匹配替换特殊字符
function RegeMatch(){var pattern = new RegExp("[~'!@#$%^&*()-+_=:]")
if($("#name").val() != "" && $("#name").val() != null){
if(pattern.test($("#name").val())){
alert("非法字符!")
$("#name").attr("value","")
$("#name").focus()
return false
}
}
}
2、jQuery限制输入ASCII值
//数字0-9的ascii为48-57//大写A-Z的ascii为65-90
//小写a-z的ascii为97-122
// ----------------------------------------------------------------------
// <summary>
// 限制只能输入数字和字母
// </summary>
// ----------------------------------------------------------------------
$.fn.onlyNumAlpha = function () {
$(this).keypress(function (event) {
var eventObj = event || e
var keyCode = eventObj.keyCode || eventObj.which
if ((keyCode >= 48 && keyCode <= 57) || (keyCode >= 65 && keyCode <= 90) || (keyCode >= 97 && keyCode <= 122))
return true
else
return false
}).focus(function () {
this.style.imeMode = 'disabled'
}).bind("paste", function () {
var clipboard = window.clipboardData.getData("Text")
if (/^(\d|[a-zA-Z])+$/.test(clipboard))
return true
else
return false
})
}
//-----调用方法$("#文本框id").onlyNumAlpha()
3、js正则匹配过滤
function stripscript(s){
var pattern = new RegExp("[`~!@#$^&*()=|{}':',\\[\\].<>/?~!@#¥……&*()——|{}【】‘;:”“'。,、?]")
var rs = ""
for (var i = 0 i < s.length i++) {
rs = rs+s.substr(i, 1).replace(pattern, '')
}
return rs
}