正则如何对输入内容进行处理
该小脚本实现的是对输入框内容中取出标签中的src中的内容,然后在原来位置进行替换内容,然后在去除输入内容中的html标签,空格等操作
<!DOCTYPE html>
<html lang=
"en"
>
<head>
<meta charset=
"UTF-8"
>
<title></title>
<script>
window.onload =
function
() {
var
target = document.getElementById(
"div1"
);
var
but = document.getElementById(
"but"
);
var
value;
but.onclick =
function
() {
value = target.innerHTML;
result = dealText(value);
alert(result);
};
};
function
dealText(msg) {
var
text1 = imageRound(msg);
var
text2 = removeTag(text1);
var
text3 = removeBlank(text2);
var
text4 = changeNBSP(text3);
return
text4;
}
function
DealNum(num) {
var
content = [];
for
(
var
i = 0; i < num.length; i++) {
//
content.push(defaultSrc(num[i]));
}
return
content;
}
function
defaultSrc(src) {
return
':avator:'
;
}
function
returnValue(srcValue) {
var
num = [];
var
pattern = /([^\/]+)\./;
var
src;
for
(
var
i = 0; i < srcValue.length; i++) {
src = pattern.exec(srcValue[i])[1];
num.push(src);
}
// alert(num);
var
source = DealNum(num);
return
source;
}
function
imageRound(text) {
var
reg2 = /<img.*?\>/gi;
var
s = text.match(reg2);
var
num = returnValue(s);
var
i = 0;
var
content = text.replace(reg2,
function
() {
return
num[i++];
});
return
content;
}
function
removeTag(text) {
var
text1;
var
reg = /<.*?>|<.*?\/>/g;
text1 = text.replace(reg,
""
);
return
text1;
}
function
removeBlank(text) {
var
text1;
var
reg = /\s+/g;
text1 = text.replace(reg,
""
);
return
text1;
}
function
changeNBSP(text) {
var
text1;
var
reg = / /g;
var
reg1 = /\;/g;
text1 = text.replace(reg,
' '
);
text1 = text1.replace(reg1,
""
);
return
text1;
}
</script>
</head>
<body>
<div contenteditable=
"true"
id=
"div1"
>abc efg <img src=
"asdjk/123.jpg"
/><span>hi gk</span><img
src=
"ahdkh/124.jpg"
/>
<div>lmnop</div>
q rst uvw
</div>
<button id=
"but"
>更新</button>
</body>
</html>
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